./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p10.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/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_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/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_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/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 386f1cb852052af34bac02a3af00aae10f607524be68f5da693b5c8aa664dbba --- 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 02:24:57,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:24:57,199 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:24:57,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:24:57,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:24:57,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:24:57,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:24:57,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:24:57,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:24:57,254 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:24:57,255 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:24:57,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:24:57,258 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:24:57,260 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:24:57,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:24:57,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:24:57,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:24:57,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:24:57,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:24:57,274 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:24:57,275 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:24:57,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:24:57,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:24:57,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:24:57,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:24:57,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:24:57,289 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:24:57,291 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:24:57,292 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:24:57,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:24:57,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:24:57,295 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:24:57,297 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:24:57,298 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:24:57,299 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:24:57,299 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:24:57,300 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:24:57,300 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:24:57,301 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:24:57,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:24:57,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:24:57,303 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:24:57,343 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:24:57,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:24:57,344 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:24:57,344 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:24:57,346 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:24:57,346 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:24:57,346 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:24:57,346 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:24:57,346 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:24:57,346 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:24:57,347 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:24:57,348 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:24:57,348 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:24:57,348 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:24:57,348 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:24:57,348 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:24:57,349 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:24:57,349 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:24:57,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:24:57,350 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:24:57,350 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:24:57,350 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:24:57,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:24:57,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:24:57,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:24:57,351 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:24:57,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:24:57,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:24:57,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:24:57,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:24:57,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:24:57,354 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:24:57,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:24:57,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:24:57,354 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:24:57,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:24:57,354 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:24:57,355 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:24:57,355 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_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 386f1cb852052af34bac02a3af00aae10f607524be68f5da693b5c8aa664dbba [2022-11-03 02:24:57,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:24:57,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:24:57,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:24:57,668 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:24:57,669 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:24:57,670 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p10.c [2022-11-03 02:24:57,754 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/data/582293913/e54943a96da54b9b9e99c9a00d7cbe7e/FLAG3159fa5e8 [2022-11-03 02:24:58,287 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:24:58,288 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p10.c [2022-11-03 02:24:58,300 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/data/582293913/e54943a96da54b9b9e99c9a00d7cbe7e/FLAG3159fa5e8 [2022-11-03 02:24:58,596 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/data/582293913/e54943a96da54b9b9e99c9a00d7cbe7e [2022-11-03 02:24:58,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:24:58,599 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:24:58,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:24:58,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:24:58,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:24:58,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:24:58" (1/1) ... [2022-11-03 02:24:58,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48828c5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:58, skipping insertion in model container [2022-11-03 02:24:58,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:24:58" (1/1) ... [2022-11-03 02:24:58,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:24:58,689 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:24:58,890 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_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p10.c[1107,1120] [2022-11-03 02:24:59,175 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:24:59,178 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:24:59,189 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_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p10.c[1107,1120] [2022-11-03 02:24:59,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:24:59,328 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:24:59,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:59 WrapperNode [2022-11-03 02:24:59,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:24:59,330 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:24:59,337 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:24:59,337 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:24:59,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:59" (1/1) ... [2022-11-03 02:24:59,395 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:59" (1/1) ... [2022-11-03 02:24:59,588 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1636 [2022-11-03 02:24:59,588 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:24:59,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:24:59,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:24:59,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:24:59,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:59" (1/1) ... [2022-11-03 02:24:59,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:59" (1/1) ... [2022-11-03 02:24:59,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:59" (1/1) ... [2022-11-03 02:24:59,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:59" (1/1) ... [2022-11-03 02:24:59,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:59" (1/1) ... [2022-11-03 02:24:59,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:59" (1/1) ... [2022-11-03 02:24:59,714 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:59" (1/1) ... [2022-11-03 02:24:59,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:59" (1/1) ... [2022-11-03 02:24:59,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:24:59,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:24:59,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:24:59,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:24:59,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:59" (1/1) ... [2022-11-03 02:24:59,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:24:59,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:24:59,794 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:24:59,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:24:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:24:59,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:25:00,286 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:25:00,288 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:25:06,464 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:25:09,648 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:25:09,648 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:25:09,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:25:09 BoogieIcfgContainer [2022-11-03 02:25:09,651 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:25:09,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:25:09,654 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:25:09,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:25:09,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:24:58" (1/3) ... [2022-11-03 02:25:09,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1900678e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:25:09, skipping insertion in model container [2022-11-03 02:25:09,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:59" (2/3) ... [2022-11-03 02:25:09,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1900678e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:25:09, skipping insertion in model container [2022-11-03 02:25:09,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:25:09" (3/3) ... [2022-11-03 02:25:09,660 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsaR_p10.c [2022-11-03 02:25:09,678 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:25:09,678 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:25:09,727 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:25:09,742 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;@5129c502, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:25:09,742 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:25:09,748 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 02:25:09,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 02:25:09,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:09,755 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 02:25:09,756 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:09,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:09,764 INFO L85 PathProgramCache]: Analyzing trace with hash 19940207, now seen corresponding path program 1 times [2022-11-03 02:25:09,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:09,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248217668] [2022-11-03 02:25:09,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:09,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:25:15,466 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:25:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:25:17,726 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 02:25:17,728 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:25:17,730 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 02:25:17,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:25:17,736 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-03 02:25:17,741 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:25:17,797 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:25:17,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:25:17 BoogieIcfgContainer [2022-11-03 02:25:17,829 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:25:17,830 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:25:17,830 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:25:17,831 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:25:17,832 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:25:09" (3/4) ... [2022-11-03 02:25:17,835 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 02:25:17,835 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:25:17,838 INFO L158 Benchmark]: Toolchain (without parser) took 19236.79ms. Allocated memory was 115.3MB in the beginning and 861.9MB in the end (delta: 746.6MB). Free memory was 76.3MB in the beginning and 334.8MB in the end (delta: -258.5MB). Peak memory consumption was 487.9MB. Max. memory is 16.1GB. [2022-11-03 02:25:17,839 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory was 54.5MB in the beginning and 54.5MB in the end (delta: 28.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:25:17,840 INFO L158 Benchmark]: CACSL2BoogieTranslator took 718.04ms. Allocated memory is still 115.3MB. Free memory was 76.1MB in the beginning and 55.7MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-03 02:25:17,841 INFO L158 Benchmark]: Boogie Procedure Inliner took 258.31ms. Allocated memory is still 115.3MB. Free memory was 55.7MB in the beginning and 75.4MB in the end (delta: -19.7MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. [2022-11-03 02:25:17,847 INFO L158 Benchmark]: Boogie Preprocessor took 158.18ms. Allocated memory is still 115.3MB. Free memory was 75.4MB in the beginning and 64.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 02:25:17,847 INFO L158 Benchmark]: RCFGBuilder took 9903.56ms. Allocated memory was 115.3MB in the beginning and 509.6MB in the end (delta: 394.3MB). Free memory was 64.9MB in the beginning and 404.0MB in the end (delta: -339.1MB). Peak memory consumption was 295.1MB. Max. memory is 16.1GB. [2022-11-03 02:25:17,849 INFO L158 Benchmark]: TraceAbstraction took 8175.88ms. Allocated memory was 509.6MB in the beginning and 861.9MB in the end (delta: 352.3MB). Free memory was 404.0MB in the beginning and 334.8MB in the end (delta: 69.2MB). Peak memory consumption was 434.1MB. Max. memory is 16.1GB. [2022-11-03 02:25:17,849 INFO L158 Benchmark]: Witness Printer took 5.58ms. Allocated memory is still 861.9MB. Free memory is still 334.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:25:17,856 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory was 54.5MB in the beginning and 54.5MB in the end (delta: 28.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 718.04ms. Allocated memory is still 115.3MB. Free memory was 76.1MB in the beginning and 55.7MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 258.31ms. Allocated memory is still 115.3MB. Free memory was 55.7MB in the beginning and 75.4MB in the end (delta: -19.7MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 158.18ms. Allocated memory is still 115.3MB. Free memory was 75.4MB in the beginning and 64.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 9903.56ms. Allocated memory was 115.3MB in the beginning and 509.6MB in the end (delta: 394.3MB). Free memory was 64.9MB in the beginning and 404.0MB in the end (delta: -339.1MB). Peak memory consumption was 295.1MB. Max. memory is 16.1GB. * TraceAbstraction took 8175.88ms. Allocated memory was 509.6MB in the beginning and 861.9MB in the end (delta: 352.3MB). Free memory was 404.0MB in the beginning and 334.8MB in the end (delta: 69.2MB). Peak memory consumption was 434.1MB. Max. memory is 16.1GB. * Witness Printer took 5.58ms. Allocated memory is still 861.9MB. Free memory is still 334.8MB. 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 bitwiseComplement at line 187, overapproximation of bitwiseOr at line 176, overapproximation of bitwiseAnd at line 149. 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_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 5); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (5 - 1); [L31] const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 12); [L32] const SORT_5 msb_SORT_5 = (SORT_5)1 << (12 - 1); [L34] const SORT_10 mask_SORT_10 = (SORT_10)-1 >> (sizeof(SORT_10) * 8 - 3); [L35] const SORT_10 msb_SORT_10 = (SORT_10)1 << (3 - 1); [L37] const SORT_23 mask_SORT_23 = (SORT_23)-1 >> (sizeof(SORT_23) * 8 - 2); [L38] const SORT_23 msb_SORT_23 = (SORT_23)1 << (2 - 1); [L40] const SORT_181 mask_SORT_181 = (SORT_181)-1 >> (sizeof(SORT_181) * 8 - 4); [L41] const SORT_181 msb_SORT_181 = (SORT_181)1 << (4 - 1); [L43] const SORT_229 mask_SORT_229 = (SORT_229)-1 >> (sizeof(SORT_229) * 8 - 32); [L44] const SORT_229 msb_SORT_229 = (SORT_229)1 << (32 - 1); [L46] const SORT_5 var_7 = 0; [L47] const SORT_10 var_12 = 3; [L48] const SORT_10 var_17 = 0; [L49] const SORT_1 var_21 = 1; [L50] const SORT_23 var_25 = 0; [L51] const SORT_23 var_28 = 3; [L52] const SORT_3 var_33 = 0; [L53] const SORT_1 var_37 = 0; [L54] const SORT_10 var_142 = 2; [L55] const SORT_10 var_146 = 1; [L56] const SORT_10 var_151 = 4; [L57] const SORT_10 var_153 = 5; [L58] const SORT_10 var_197 = 7; [L59] const SORT_10 var_202 = 6; [L60] const SORT_229 var_231 = 0; [L61] const SORT_3 var_246 = 2; [L62] const SORT_3 var_268 = 31; [L64] SORT_1 input_2; [L65] SORT_3 input_4; [L66] SORT_5 input_6; [L67] SORT_3 input_257; [L68] SORT_3 input_258; [L69] SORT_3 input_259; [L70] SORT_3 input_267; [L71] SORT_3 input_277; [L72] SORT_3 input_278; [L73] SORT_3 input_279; [L74] SORT_3 input_282; [L75] SORT_3 input_301; [L76] SORT_3 input_302; [L77] SORT_3 input_303; [L78] SORT_3 input_306; [L79] SORT_3 input_308; [L80] SORT_23 input_322; [L81] SORT_23 input_323; [L82] SORT_23 input_324; [L84] SORT_5 state_8 = __VERIFIER_nondet_ushort() & mask_SORT_5; [L85] SORT_10 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L86] SORT_3 state_34 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L87] SORT_3 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L88] SORT_3 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L89] SORT_1 state_126 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L90] SORT_3 state_128 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L91] SORT_3 state_130 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L92] SORT_3 state_132 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L93] SORT_3 state_134 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L94] SORT_3 state_136 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L95] SORT_3 state_138 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L96] SORT_3 state_140 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L98] SORT_5 init_9_arg_1 = var_7; [L99] state_8 = init_9_arg_1 [L100] SORT_10 init_19_arg_1 = var_17; [L101] state_18 = init_19_arg_1 [L102] SORT_3 init_35_arg_1 = var_33; [L103] state_34 = init_35_arg_1 [L104] SORT_3 init_40_arg_1 = var_33; [L105] state_39 = init_40_arg_1 [L106] SORT_3 init_46_arg_1 = var_33; [L107] state_45 = init_46_arg_1 [L108] SORT_1 init_127_arg_1 = var_37; [L109] state_126 = init_127_arg_1 [L110] SORT_3 init_129_arg_1 = var_33; [L111] state_128 = init_129_arg_1 [L112] SORT_3 init_131_arg_1 = var_33; [L113] state_130 = init_131_arg_1 [L114] SORT_3 init_133_arg_1 = var_33; [L115] state_132 = init_133_arg_1 [L116] SORT_3 init_135_arg_1 = var_33; [L117] state_134 = init_135_arg_1 [L118] SORT_3 init_137_arg_1 = var_33; [L119] state_136 = init_137_arg_1 [L120] SORT_3 init_139_arg_1 = var_33; [L121] state_138 = init_139_arg_1 [L122] SORT_3 init_141_arg_1 = var_33; [L123] state_140 = init_141_arg_1 VAL [init_127_arg_1=0, init_129_arg_1=0, init_131_arg_1=0, init_133_arg_1=0, init_135_arg_1=0, init_137_arg_1=0, init_139_arg_1=0, init_141_arg_1=0, init_19_arg_1=0, init_35_arg_1=0, init_40_arg_1=0, init_46_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_10=7, mask_SORT_181=15, mask_SORT_229=4294967295, mask_SORT_23=3, mask_SORT_3=31, mask_SORT_5=4095, msb_SORT_1=1, msb_SORT_10=4, msb_SORT_181=8, msb_SORT_229=2147483648, msb_SORT_23=2, msb_SORT_3=16, msb_SORT_5=2048, state_126=0, state_128=0, state_130=0, state_132=0, state_134=0, state_136=0, state_138=0, state_140=0, state_18=0, state_34=0, state_39=0, state_45=0, state_8=0, var_12=3, var_142=2, var_146=1, var_151=4, var_153=5, var_17=0, var_197=7, var_202=6, var_21=1, var_231=0, var_246=2, var_25=0, var_268=31, var_28=3, var_33=0, var_37=0, var_7=0] [L126] input_2 = __VERIFIER_nondet_uchar() [L127] input_4 = __VERIFIER_nondet_uchar() [L128] input_6 = __VERIFIER_nondet_ushort() [L129] input_257 = __VERIFIER_nondet_uchar() [L130] input_258 = __VERIFIER_nondet_uchar() [L131] input_259 = __VERIFIER_nondet_uchar() [L132] input_267 = __VERIFIER_nondet_uchar() [L133] input_277 = __VERIFIER_nondet_uchar() [L134] input_278 = __VERIFIER_nondet_uchar() [L135] input_279 = __VERIFIER_nondet_uchar() [L136] input_282 = __VERIFIER_nondet_uchar() [L137] input_301 = __VERIFIER_nondet_uchar() [L138] input_302 = __VERIFIER_nondet_uchar() [L139] input_303 = __VERIFIER_nondet_uchar() [L140] input_306 = __VERIFIER_nondet_uchar() [L141] input_308 = __VERIFIER_nondet_uchar() [L142] input_322 = __VERIFIER_nondet_uchar() [L143] input_323 = __VERIFIER_nondet_uchar() [L144] input_324 = __VERIFIER_nondet_uchar() [L147] SORT_5 var_11_arg_0 = state_8; [L148] SORT_10 var_11 = var_11_arg_0 >> 9; [L149] var_11 = var_11 & mask_SORT_10 [L150] SORT_10 var_13_arg_0 = var_11; [L151] SORT_10 var_13_arg_1 = var_12; [L152] SORT_1 var_13 = var_13_arg_0 == var_13_arg_1; [L153] SORT_5 var_14_arg_0 = state_8; [L154] SORT_10 var_14 = var_14_arg_0 >> 0; [L155] var_14 = var_14 & mask_SORT_10 [L156] SORT_10 var_15_arg_0 = var_14; [L157] SORT_10 var_15_arg_1 = var_12; [L158] SORT_1 var_15 = var_15_arg_0 == var_15_arg_1; [L159] SORT_1 var_16_arg_0 = var_13; [L160] SORT_1 var_16_arg_1 = var_15; [L161] SORT_1 var_16 = var_16_arg_0 & var_16_arg_1; [L162] SORT_10 var_20_arg_0 = state_18; [L163] SORT_1 var_20 = var_20_arg_0 >> 2; [L164] var_20 = var_20 & mask_SORT_1 [L165] SORT_1 var_22_arg_0 = var_20; [L166] SORT_1 var_22_arg_1 = var_21; [L167] SORT_1 var_22 = var_22_arg_0 == var_22_arg_1; [L168] SORT_10 var_24_arg_0 = state_18; [L169] SORT_23 var_24 = var_24_arg_0 >> 0; [L170] var_24 = var_24 & mask_SORT_23 [L171] SORT_23 var_26_arg_0 = var_24; [L172] SORT_23 var_26_arg_1 = var_25; [L173] SORT_1 var_26 = var_26_arg_0 == var_26_arg_1; [L174] SORT_1 var_27_arg_0 = var_22; [L175] SORT_1 var_27_arg_1 = var_26; [L176] SORT_1 var_27 = var_27_arg_0 | var_27_arg_1; [L177] SORT_23 var_29_arg_0 = var_24; [L178] SORT_23 var_29_arg_1 = var_28; [L179] SORT_1 var_29 = var_29_arg_0 == var_29_arg_1; [L180] SORT_1 var_30_arg_0 = var_27; [L181] SORT_1 var_30_arg_1 = var_29; [L182] SORT_1 var_30 = var_30_arg_0 | var_30_arg_1; [L183] SORT_1 var_31_arg_0 = var_16; [L184] SORT_1 var_31_arg_1 = var_30; [L185] SORT_1 var_31 = var_31_arg_0 & var_31_arg_1; [L186] SORT_1 var_32_arg_0 = var_31; [L187] SORT_1 var_32 = ~var_32_arg_0; [L188] SORT_3 var_36_arg_0 = state_34; [L189] SORT_1 var_36 = var_36_arg_0 >> 4; [L190] var_36 = var_36 & mask_SORT_1 [L191] SORT_1 var_38_arg_0 = var_36; [L192] SORT_1 var_38_arg_1 = var_37; [L193] SORT_1 var_38 = var_38_arg_0 == var_38_arg_1; [L194] SORT_3 var_41_arg_0 = state_39; [L195] SORT_1 var_41 = var_41_arg_0 >> 4; [L196] var_41 = var_41 & mask_SORT_1 [L197] SORT_1 var_42_arg_0 = var_41; [L198] SORT_1 var_42_arg_1 = var_37; [L199] SORT_1 var_42 = var_42_arg_0 == var_42_arg_1; [L200] SORT_1 var_43_arg_0 = var_38; [L201] SORT_1 var_43_arg_1 = var_42; [L202] SORT_1 var_43 = var_43_arg_0 & var_43_arg_1; [L203] SORT_1 var_44_arg_0 = var_43; [L204] SORT_1 var_44 = ~var_44_arg_0; [L205] SORT_3 var_47_arg_0 = state_45; [L206] SORT_1 var_47 = var_47_arg_0 >> 4; [L207] var_47 = var_47 & mask_SORT_1 [L208] SORT_1 var_48_arg_0 = var_47; [L209] SORT_1 var_48_arg_1 = var_37; [L210] SORT_1 var_48 = var_48_arg_0 == var_48_arg_1; [L211] SORT_1 var_49_arg_0 = var_44; [L212] SORT_1 var_49_arg_1 = var_48; [L213] SORT_1 var_49 = var_49_arg_0 | var_49_arg_1; [L214] SORT_1 var_50_arg_0 = var_47; [L215] SORT_1 var_50_arg_1 = var_21; [L216] SORT_1 var_50 = var_50_arg_0 == var_50_arg_1; [L217] SORT_1 var_51_arg_0 = var_36; [L218] SORT_1 var_51_arg_1 = var_37; [L219] SORT_1 var_51 = var_51_arg_0 == var_51_arg_1; [L220] SORT_1 var_52_arg_0 = var_41; [L221] SORT_1 var_52_arg_1 = var_37; [L222] SORT_1 var_52 = var_52_arg_0 == var_52_arg_1; [L223] SORT_1 var_53_arg_0 = var_51; [L224] SORT_1 var_53_arg_1 = var_52; [L225] SORT_1 var_53 = var_53_arg_0 & var_53_arg_1; [L226] SORT_1 var_54_arg_0 = var_50; [L227] SORT_1 var_54_arg_1 = var_53; [L228] SORT_1 var_54 = var_54_arg_0 | var_54_arg_1; [L229] SORT_1 var_55_arg_0 = var_49; [L230] SORT_1 var_55_arg_1 = var_54; [L231] SORT_1 var_55 = var_55_arg_0 & var_55_arg_1; [L232] SORT_3 var_56_arg_0 = state_34; [L233] SORT_1 var_56 = var_56_arg_0 >> 3; [L234] var_56 = var_56 & mask_SORT_1 [L235] SORT_1 var_57_arg_0 = var_56; [L236] SORT_1 var_57_arg_1 = var_37; [L237] SORT_1 var_57 = var_57_arg_0 == var_57_arg_1; [L238] SORT_3 var_58_arg_0 = state_39; [L239] SORT_1 var_58 = var_58_arg_0 >> 3; [L240] var_58 = var_58 & mask_SORT_1 [L241] SORT_1 var_59_arg_0 = var_58; [L242] SORT_1 var_59_arg_1 = var_37; [L243] SORT_1 var_59 = var_59_arg_0 == var_59_arg_1; [L244] SORT_1 var_60_arg_0 = var_57; [L245] SORT_1 var_60_arg_1 = var_59; [L246] SORT_1 var_60 = var_60_arg_0 & var_60_arg_1; [L247] SORT_1 var_61_arg_0 = var_60; [L248] SORT_1 var_61 = ~var_61_arg_0; [L249] SORT_3 var_62_arg_0 = state_45; [L250] SORT_1 var_62 = var_62_arg_0 >> 3; [L251] var_62 = var_62 & mask_SORT_1 [L252] SORT_1 var_63_arg_0 = var_62; [L253] SORT_1 var_63_arg_1 = var_37; [L254] SORT_1 var_63 = var_63_arg_0 == var_63_arg_1; [L255] SORT_1 var_64_arg_0 = var_61; [L256] SORT_1 var_64_arg_1 = var_63; [L257] SORT_1 var_64 = var_64_arg_0 | var_64_arg_1; [L258] SORT_1 var_65_arg_0 = var_55; [L259] SORT_1 var_65_arg_1 = var_64; [L260] SORT_1 var_65 = var_65_arg_0 & var_65_arg_1; [L261] SORT_1 var_66_arg_0 = var_62; [L262] SORT_1 var_66_arg_1 = var_21; [L263] SORT_1 var_66 = var_66_arg_0 == var_66_arg_1; [L264] SORT_1 var_67_arg_0 = var_56; [L265] SORT_1 var_67_arg_1 = var_37; [L266] SORT_1 var_67 = var_67_arg_0 == var_67_arg_1; [L267] SORT_1 var_68_arg_0 = var_58; [L268] SORT_1 var_68_arg_1 = var_37; [L269] SORT_1 var_68 = var_68_arg_0 == var_68_arg_1; [L270] SORT_1 var_69_arg_0 = var_67; [L271] SORT_1 var_69_arg_1 = var_68; [L272] SORT_1 var_69 = var_69_arg_0 & var_69_arg_1; [L273] SORT_1 var_70_arg_0 = var_66; [L274] SORT_1 var_70_arg_1 = var_69; [L275] SORT_1 var_70 = var_70_arg_0 | var_70_arg_1; [L276] SORT_1 var_71_arg_0 = var_65; [L277] SORT_1 var_71_arg_1 = var_70; [L278] SORT_1 var_71 = var_71_arg_0 & var_71_arg_1; [L279] SORT_3 var_72_arg_0 = state_34; [L280] SORT_1 var_72 = var_72_arg_0 >> 2; [L281] var_72 = var_72 & mask_SORT_1 [L282] SORT_1 var_73_arg_0 = var_72; [L283] SORT_1 var_73_arg_1 = var_37; [L284] SORT_1 var_73 = var_73_arg_0 == var_73_arg_1; [L285] SORT_3 var_74_arg_0 = state_39; [L286] SORT_1 var_74 = var_74_arg_0 >> 2; [L287] var_74 = var_74 & mask_SORT_1 [L288] SORT_1 var_75_arg_0 = var_74; [L289] SORT_1 var_75_arg_1 = var_37; [L290] SORT_1 var_75 = var_75_arg_0 == var_75_arg_1; [L291] SORT_1 var_76_arg_0 = var_73; [L292] SORT_1 var_76_arg_1 = var_75; [L293] SORT_1 var_76 = var_76_arg_0 & var_76_arg_1; [L294] SORT_1 var_77_arg_0 = var_76; [L295] SORT_1 var_77 = ~var_77_arg_0; [L296] SORT_3 var_78_arg_0 = state_45; [L297] SORT_1 var_78 = var_78_arg_0 >> 2; [L298] var_78 = var_78 & mask_SORT_1 [L299] SORT_1 var_79_arg_0 = var_78; [L300] SORT_1 var_79_arg_1 = var_37; [L301] SORT_1 var_79 = var_79_arg_0 == var_79_arg_1; [L302] SORT_1 var_80_arg_0 = var_77; [L303] SORT_1 var_80_arg_1 = var_79; [L304] SORT_1 var_80 = var_80_arg_0 | var_80_arg_1; [L305] SORT_1 var_81_arg_0 = var_71; [L306] SORT_1 var_81_arg_1 = var_80; [L307] SORT_1 var_81 = var_81_arg_0 & var_81_arg_1; [L308] SORT_1 var_82_arg_0 = var_78; [L309] SORT_1 var_82_arg_1 = var_21; [L310] SORT_1 var_82 = var_82_arg_0 == var_82_arg_1; [L311] SORT_1 var_83_arg_0 = var_72; [L312] SORT_1 var_83_arg_1 = var_37; [L313] SORT_1 var_83 = var_83_arg_0 == var_83_arg_1; [L314] SORT_1 var_84_arg_0 = var_74; [L315] SORT_1 var_84_arg_1 = var_37; [L316] SORT_1 var_84 = var_84_arg_0 == var_84_arg_1; [L317] SORT_1 var_85_arg_0 = var_83; [L318] SORT_1 var_85_arg_1 = var_84; [L319] SORT_1 var_85 = var_85_arg_0 & var_85_arg_1; [L320] SORT_1 var_86_arg_0 = var_82; [L321] SORT_1 var_86_arg_1 = var_85; [L322] SORT_1 var_86 = var_86_arg_0 | var_86_arg_1; [L323] SORT_1 var_87_arg_0 = var_81; [L324] SORT_1 var_87_arg_1 = var_86; [L325] SORT_1 var_87 = var_87_arg_0 & var_87_arg_1; [L326] SORT_3 var_88_arg_0 = state_34; [L327] SORT_1 var_88 = var_88_arg_0 >> 1; [L328] var_88 = var_88 & mask_SORT_1 [L329] SORT_1 var_89_arg_0 = var_88; [L330] SORT_1 var_89_arg_1 = var_37; [L331] SORT_1 var_89 = var_89_arg_0 == var_89_arg_1; [L332] SORT_3 var_90_arg_0 = state_39; [L333] SORT_1 var_90 = var_90_arg_0 >> 1; [L334] var_90 = var_90 & mask_SORT_1 [L335] SORT_1 var_91_arg_0 = var_90; [L336] SORT_1 var_91_arg_1 = var_37; [L337] SORT_1 var_91 = var_91_arg_0 == var_91_arg_1; [L338] SORT_1 var_92_arg_0 = var_89; [L339] SORT_1 var_92_arg_1 = var_91; [L340] SORT_1 var_92 = var_92_arg_0 & var_92_arg_1; [L341] SORT_1 var_93_arg_0 = var_92; [L342] SORT_1 var_93 = ~var_93_arg_0; [L343] SORT_3 var_94_arg_0 = state_45; [L344] SORT_1 var_94 = var_94_arg_0 >> 1; [L345] var_94 = var_94 & mask_SORT_1 [L346] SORT_1 var_95_arg_0 = var_94; [L347] SORT_1 var_95_arg_1 = var_37; [L348] SORT_1 var_95 = var_95_arg_0 == var_95_arg_1; [L349] SORT_1 var_96_arg_0 = var_93; [L350] SORT_1 var_96_arg_1 = var_95; [L351] SORT_1 var_96 = var_96_arg_0 | var_96_arg_1; [L352] SORT_1 var_97_arg_0 = var_87; [L353] SORT_1 var_97_arg_1 = var_96; [L354] SORT_1 var_97 = var_97_arg_0 & var_97_arg_1; [L355] SORT_1 var_98_arg_0 = var_94; [L356] SORT_1 var_98_arg_1 = var_21; [L357] SORT_1 var_98 = var_98_arg_0 == var_98_arg_1; [L358] SORT_1 var_99_arg_0 = var_88; [L359] SORT_1 var_99_arg_1 = var_37; [L360] SORT_1 var_99 = var_99_arg_0 == var_99_arg_1; [L361] SORT_1 var_100_arg_0 = var_90; [L362] SORT_1 var_100_arg_1 = var_37; [L363] SORT_1 var_100 = var_100_arg_0 == var_100_arg_1; [L364] SORT_1 var_101_arg_0 = var_99; [L365] SORT_1 var_101_arg_1 = var_100; [L366] SORT_1 var_101 = var_101_arg_0 & var_101_arg_1; [L367] SORT_1 var_102_arg_0 = var_98; [L368] SORT_1 var_102_arg_1 = var_101; [L369] SORT_1 var_102 = var_102_arg_0 | var_102_arg_1; [L370] SORT_1 var_103_arg_0 = var_97; [L371] SORT_1 var_103_arg_1 = var_102; [L372] SORT_1 var_103 = var_103_arg_0 & var_103_arg_1; [L373] SORT_3 var_104_arg_0 = state_34; [L374] SORT_1 var_104 = var_104_arg_0 >> 0; [L375] var_104 = var_104 & mask_SORT_1 [L376] SORT_1 var_105_arg_0 = var_104; [L377] SORT_1 var_105_arg_1 = var_37; [L378] SORT_1 var_105 = var_105_arg_0 == var_105_arg_1; [L379] SORT_3 var_106_arg_0 = state_39; [L380] SORT_1 var_106 = var_106_arg_0 >> 0; [L381] var_106 = var_106 & mask_SORT_1 [L382] SORT_1 var_107_arg_0 = var_106; [L383] SORT_1 var_107_arg_1 = var_37; [L384] SORT_1 var_107 = var_107_arg_0 == var_107_arg_1; [L385] SORT_1 var_108_arg_0 = var_105; [L386] SORT_1 var_108_arg_1 = var_107; [L387] SORT_1 var_108 = var_108_arg_0 & var_108_arg_1; [L388] SORT_1 var_109_arg_0 = var_108; [L389] SORT_1 var_109 = ~var_109_arg_0; [L390] SORT_3 var_110_arg_0 = state_45; [L391] SORT_1 var_110 = var_110_arg_0 >> 0; [L392] var_110 = var_110 & mask_SORT_1 [L393] SORT_1 var_111_arg_0 = var_110; [L394] SORT_1 var_111_arg_1 = var_37; [L395] SORT_1 var_111 = var_111_arg_0 == var_111_arg_1; [L396] SORT_1 var_112_arg_0 = var_109; [L397] SORT_1 var_112_arg_1 = var_111; [L398] SORT_1 var_112 = var_112_arg_0 | var_112_arg_1; [L399] SORT_1 var_113_arg_0 = var_103; [L400] SORT_1 var_113_arg_1 = var_112; [L401] SORT_1 var_113 = var_113_arg_0 & var_113_arg_1; [L402] SORT_1 var_114_arg_0 = var_110; [L403] SORT_1 var_114_arg_1 = var_21; [L404] SORT_1 var_114 = var_114_arg_0 == var_114_arg_1; [L405] SORT_1 var_115_arg_0 = var_104; [L406] SORT_1 var_115_arg_1 = var_37; [L407] SORT_1 var_115 = var_115_arg_0 == var_115_arg_1; [L408] SORT_1 var_116_arg_0 = var_106; [L409] SORT_1 var_116_arg_1 = var_37; [L410] SORT_1 var_116 = var_116_arg_0 == var_116_arg_1; [L411] SORT_1 var_117_arg_0 = var_115; [L412] SORT_1 var_117_arg_1 = var_116; [L413] SORT_1 var_117 = var_117_arg_0 & var_117_arg_1; [L414] SORT_1 var_118_arg_0 = var_114; [L415] SORT_1 var_118_arg_1 = var_117; [L416] SORT_1 var_118 = var_118_arg_0 | var_118_arg_1; [L417] SORT_1 var_119_arg_0 = var_113; [L418] SORT_1 var_119_arg_1 = var_118; [L419] SORT_1 var_119 = var_119_arg_0 & var_119_arg_1; [L420] SORT_1 var_120_arg_0 = var_32; [L421] SORT_1 var_120_arg_1 = var_119; [L422] SORT_1 var_120 = var_120_arg_0 | var_120_arg_1; [L423] SORT_1 var_123_arg_0 = var_120; [L424] SORT_1 var_123 = ~var_123_arg_0; [L425] SORT_1 var_124_arg_0 = var_21; [L426] SORT_1 var_124_arg_1 = var_123; [L427] SORT_1 var_124 = var_124_arg_0 & var_124_arg_1; [L428] var_124 = var_124 & mask_SORT_1 [L429] SORT_1 bad_125_arg_0 = var_124; [L430] CALL __VERIFIER_assert(!(bad_125_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: 8.0s, 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: 0.0s SsaConstructionTime, 5.6s 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 02:25:17,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/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_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/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_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/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 386f1cb852052af34bac02a3af00aae10f607524be68f5da693b5c8aa664dbba --- 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 02:25:20,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:25:20,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:25:20,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:25:20,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:25:20,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:25:20,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:25:20,343 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:25:20,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:25:20,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:25:20,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:25:20,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:25:20,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:25:20,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:25:20,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:25:20,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:25:20,369 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:25:20,370 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:25:20,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:25:20,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:25:20,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:25:20,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:25:20,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:25:20,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:25:20,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:25:20,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:25:20,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:25:20,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:25:20,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:25:20,388 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:25:20,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:25:20,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:25:20,390 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:25:20,391 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:25:20,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:25:20,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:25:20,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:25:20,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:25:20,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:25:20,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:25:20,395 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:25:20,396 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 02:25:20,433 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:25:20,434 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:25:20,436 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:25:20,436 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:25:20,437 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:25:20,437 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:25:20,437 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:25:20,438 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:25:20,438 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:25:20,438 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:25:20,439 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:25:20,439 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:25:20,441 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:25:20,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:25:20,441 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:25:20,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:25:20,442 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:25:20,442 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 02:25:20,442 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 02:25:20,442 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 02:25:20,443 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:25:20,443 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:25:20,443 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:25:20,443 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:25:20,443 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 02:25:20,444 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:25:20,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:25:20,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:25:20,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:25:20,445 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:25:20,445 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 02:25:20,445 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 02:25:20,446 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:25:20,446 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:25:20,446 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 02:25:20,446 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_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 386f1cb852052af34bac02a3af00aae10f607524be68f5da693b5c8aa664dbba [2022-11-03 02:25:20,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:25:20,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:25:20,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:25:20,890 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:25:20,891 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:25:20,892 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p10.c [2022-11-03 02:25:20,968 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/data/ccbaf8b27/a66f351d5a6641a29f5ccc58e81c248c/FLAG5a42b44e6 [2022-11-03 02:25:21,593 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:25:21,593 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p10.c [2022-11-03 02:25:21,626 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/data/ccbaf8b27/a66f351d5a6641a29f5ccc58e81c248c/FLAG5a42b44e6 [2022-11-03 02:25:21,900 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/data/ccbaf8b27/a66f351d5a6641a29f5ccc58e81c248c [2022-11-03 02:25:21,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:25:21,906 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:25:21,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:25:21,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:25:21,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:25:21,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:25:21" (1/1) ... [2022-11-03 02:25:21,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f3ba6ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:21, skipping insertion in model container [2022-11-03 02:25:21,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:25:21" (1/1) ... [2022-11-03 02:25:21,924 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:25:21,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:25:22,223 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_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p10.c[1107,1120] [2022-11-03 02:25:22,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:25:22,564 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:25:22,575 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_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p10.c[1107,1120] [2022-11-03 02:25:22,716 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:25:22,728 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:25:22,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:22 WrapperNode [2022-11-03 02:25:22,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:25:22,732 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:25:22,733 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:25:22,733 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:25:22,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:22" (1/1) ... [2022-11-03 02:25:22,768 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:22" (1/1) ... [2022-11-03 02:25:22,840 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1636 [2022-11-03 02:25:22,840 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:25:22,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:25:22,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:25:22,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:25:22,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:22" (1/1) ... [2022-11-03 02:25:22,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:22" (1/1) ... [2022-11-03 02:25:22,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:22" (1/1) ... [2022-11-03 02:25:22,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:22" (1/1) ... [2022-11-03 02:25:22,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:22" (1/1) ... [2022-11-03 02:25:22,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:22" (1/1) ... [2022-11-03 02:25:22,978 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:22" (1/1) ... [2022-11-03 02:25:22,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:22" (1/1) ... [2022-11-03 02:25:23,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:25:23,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:25:23,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:25:23,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:25:23,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:22" (1/1) ... [2022-11-03 02:25:23,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:25:23,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:25:23,041 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:25:23,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:25:23,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:25:23,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:25:23,486 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:25:23,488 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:25:24,618 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:25:24,627 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:25:24,627 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:25:24,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:25:24 BoogieIcfgContainer [2022-11-03 02:25:24,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:25:24,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:25:24,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:25:24,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:25:24,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:25:21" (1/3) ... [2022-11-03 02:25:24,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1667449f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:25:24, skipping insertion in model container [2022-11-03 02:25:24,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:22" (2/3) ... [2022-11-03 02:25:24,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1667449f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:25:24, skipping insertion in model container [2022-11-03 02:25:24,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:25:24" (3/3) ... [2022-11-03 02:25:24,655 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsaR_p10.c [2022-11-03 02:25:24,674 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:25:24,674 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:25:24,749 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:25:24,757 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;@563a111d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:25:24,757 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:25:24,763 INFO L276 IsEmpty]: Start isEmpty. Operand has 185 states, 183 states have (on average 1.4972677595628416) internal successors, (274), 184 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:24,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-03 02:25:24,770 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:24,770 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-03 02:25:24,771 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:24,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:24,779 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-03 02:25:24,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:24,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1404835103] [2022-11-03 02:25:24,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:24,796 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:24,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:24,800 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:24,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 02:25:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:25,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-03 02:25:25,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:25,473 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 02:25:25,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:25,474 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:25,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1404835103] [2022-11-03 02:25:25,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1404835103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:25,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:25,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:25:25,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55627822] [2022-11-03 02:25:25,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:25,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:25:25,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:25,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:25:25,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:25:25,527 INFO L87 Difference]: Start difference. First operand has 185 states, 183 states have (on average 1.4972677595628416) internal successors, (274), 184 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:25,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:25,989 INFO L93 Difference]: Finished difference Result 542 states and 813 transitions. [2022-11-03 02:25:25,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:25:25,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-11-03 02:25:25,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:26,002 INFO L225 Difference]: With dead ends: 542 [2022-11-03 02:25:26,002 INFO L226 Difference]: Without dead ends: 359 [2022-11-03 02:25:26,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 02:25:26,008 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 525 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:26,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 734 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:25:26,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-11-03 02:25:26,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 183. [2022-11-03 02:25:26,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 1.4835164835164836) internal successors, (270), 182 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:26,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 270 transitions. [2022-11-03 02:25:26,055 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 270 transitions. Word has length 5 [2022-11-03 02:25:26,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:26,055 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 270 transitions. [2022-11-03 02:25:26,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:26,055 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 270 transitions. [2022-11-03 02:25:26,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:25:26,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:26,063 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:26,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:26,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:26,277 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:26,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:26,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1686520099, now seen corresponding path program 1 times [2022-11-03 02:25:26,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:26,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583482335] [2022-11-03 02:25:26,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:26,281 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:26,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:26,282 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:26,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 02:25:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:27,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 02:25:27,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:27,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:27,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:27,229 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:27,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583482335] [2022-11-03 02:25:27,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1583482335] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:27,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:27,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:25:27,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755696007] [2022-11-03 02:25:27,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:27,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:25:27,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:27,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:25:27,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:25:27,234 INFO L87 Difference]: Start difference. First operand 183 states and 270 transitions. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:27,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:27,590 INFO L93 Difference]: Finished difference Result 715 states and 1062 transitions. [2022-11-03 02:25:27,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:25:27,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:25:27,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:27,593 INFO L225 Difference]: With dead ends: 715 [2022-11-03 02:25:27,593 INFO L226 Difference]: Without dead ends: 536 [2022-11-03 02:25:27,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 179 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 02:25:27,596 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 772 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:27,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 965 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:25:27,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2022-11-03 02:25:27,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 189. [2022-11-03 02:25:27,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.4787234042553192) internal successors, (278), 188 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:27,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 278 transitions. [2022-11-03 02:25:27,617 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 278 transitions. Word has length 182 [2022-11-03 02:25:27,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:27,618 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 278 transitions. [2022-11-03 02:25:27,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:27,620 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 278 transitions. [2022-11-03 02:25:27,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:25:27,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:27,628 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:27,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:27,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:27,851 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:27,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:27,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1159126049, now seen corresponding path program 1 times [2022-11-03 02:25:27,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:27,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715167780] [2022-11-03 02:25:27,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:27,855 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:27,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:27,857 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:27,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 02:25:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:28,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 02:25:28,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:28,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:28,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:28,873 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:28,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1715167780] [2022-11-03 02:25:28,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1715167780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:28,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:28,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:25:28,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910446517] [2022-11-03 02:25:28,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:28,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:25:28,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:28,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:25:28,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:25:28,882 INFO L87 Difference]: Start difference. First operand 189 states and 278 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:29,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:29,310 INFO L93 Difference]: Finished difference Result 724 states and 1072 transitions. [2022-11-03 02:25:29,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:25:29,312 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:25:29,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:29,314 INFO L225 Difference]: With dead ends: 724 [2022-11-03 02:25:29,314 INFO L226 Difference]: Without dead ends: 545 [2022-11-03 02:25:29,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 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 02:25:29,316 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 1040 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 1485 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:29,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1040 Valid, 1485 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:25:29,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2022-11-03 02:25:29,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 191. [2022-11-03 02:25:29,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.4736842105263157) internal successors, (280), 190 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:29,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 280 transitions. [2022-11-03 02:25:29,339 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 280 transitions. Word has length 182 [2022-11-03 02:25:29,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:29,339 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 280 transitions. [2022-11-03 02:25:29,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:29,340 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 280 transitions. [2022-11-03 02:25:29,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:25:29,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:29,342 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:29,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:29,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:29,569 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:29,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:29,570 INFO L85 PathProgramCache]: Analyzing trace with hash -510533279, now seen corresponding path program 1 times [2022-11-03 02:25:29,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:29,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [352958773] [2022-11-03 02:25:29,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:29,572 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:29,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:29,573 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:29,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 02:25:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:30,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 02:25:30,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:30,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:30,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:30,485 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:30,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [352958773] [2022-11-03 02:25:30,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [352958773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:30,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:30,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:25:30,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300378315] [2022-11-03 02:25:30,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:30,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:25:30,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:30,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:25:30,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:25:30,488 INFO L87 Difference]: Start difference. First operand 191 states and 280 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:30,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:30,861 INFO L93 Difference]: Finished difference Result 724 states and 1071 transitions. [2022-11-03 02:25:30,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:25:30,862 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:25:30,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:30,864 INFO L225 Difference]: With dead ends: 724 [2022-11-03 02:25:30,865 INFO L226 Difference]: Without dead ends: 545 [2022-11-03 02:25:30,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 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 02:25:30,866 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 1033 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1033 SdHoareTripleChecker+Valid, 1481 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:30,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1033 Valid, 1481 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:25:30,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2022-11-03 02:25:30,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 193. [2022-11-03 02:25:30,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.46875) internal successors, (282), 192 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:30,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 282 transitions. [2022-11-03 02:25:30,877 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 282 transitions. Word has length 182 [2022-11-03 02:25:30,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:30,877 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 282 transitions. [2022-11-03 02:25:30,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:30,878 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 282 transitions. [2022-11-03 02:25:30,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:25:30,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:30,882 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:30,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:31,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:31,104 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:31,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:31,105 INFO L85 PathProgramCache]: Analyzing trace with hash -420472989, now seen corresponding path program 1 times [2022-11-03 02:25:31,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:31,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832461407] [2022-11-03 02:25:31,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:31,107 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:31,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:31,108 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:31,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 02:25:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:31,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:25:31,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:31,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:31,879 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:31,879 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:31,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832461407] [2022-11-03 02:25:31,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1832461407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:31,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:31,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:25:31,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335489444] [2022-11-03 02:25:31,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:31,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:25:31,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:31,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:25:31,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:25:31,882 INFO L87 Difference]: Start difference. First operand 193 states and 282 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:32,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:32,167 INFO L93 Difference]: Finished difference Result 724 states and 1070 transitions. [2022-11-03 02:25:32,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:25:32,173 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:25:32,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:32,176 INFO L225 Difference]: With dead ends: 724 [2022-11-03 02:25:32,176 INFO L226 Difference]: Without dead ends: 545 [2022-11-03 02:25:32,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 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 02:25:32,178 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 1028 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:32,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1028 Valid, 1519 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:25:32,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2022-11-03 02:25:32,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 195. [2022-11-03 02:25:32,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.4639175257731958) internal successors, (284), 194 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:32,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 284 transitions. [2022-11-03 02:25:32,197 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 284 transitions. Word has length 182 [2022-11-03 02:25:32,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:32,197 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 284 transitions. [2022-11-03 02:25:32,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:32,198 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 284 transitions. [2022-11-03 02:25:32,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:25:32,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:32,201 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:32,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:32,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:32,401 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:32,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:32,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1828198939, now seen corresponding path program 1 times [2022-11-03 02:25:32,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:32,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1110289171] [2022-11-03 02:25:32,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:32,403 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:32,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:32,404 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:32,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 02:25:33,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:33,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 02:25:33,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:33,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:33,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:33,167 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:33,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1110289171] [2022-11-03 02:25:33,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1110289171] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:33,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:33,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:25:33,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671332097] [2022-11-03 02:25:33,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:33,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:25:33,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:33,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:25:33,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:25:33,170 INFO L87 Difference]: Start difference. First operand 195 states and 284 transitions. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:33,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:33,499 INFO L93 Difference]: Finished difference Result 715 states and 1058 transitions. [2022-11-03 02:25:33,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:25:33,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:25:33,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:33,501 INFO L225 Difference]: With dead ends: 715 [2022-11-03 02:25:33,502 INFO L226 Difference]: Without dead ends: 536 [2022-11-03 02:25:33,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 179 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 02:25:33,503 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 748 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:33,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 961 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:25:33,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2022-11-03 02:25:33,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 197. [2022-11-03 02:25:33,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.4591836734693877) internal successors, (286), 196 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:33,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 286 transitions. [2022-11-03 02:25:33,511 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 286 transitions. Word has length 182 [2022-11-03 02:25:33,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:33,511 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 286 transitions. [2022-11-03 02:25:33,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:33,512 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 286 transitions. [2022-11-03 02:25:33,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:25:33,514 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:33,514 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:33,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-11-03 02:25:33,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:33,729 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:33,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:33,729 INFO L85 PathProgramCache]: Analyzing trace with hash 543517927, now seen corresponding path program 1 times [2022-11-03 02:25:33,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:33,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [646538239] [2022-11-03 02:25:33,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:33,731 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:33,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:33,732 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:33,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 02:25:34,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:34,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 02:25:34,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:34,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:34,511 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:34,511 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:34,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [646538239] [2022-11-03 02:25:34,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [646538239] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:34,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:34,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:25:34,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437771103] [2022-11-03 02:25:34,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:34,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:25:34,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:34,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:25:34,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:25:34,514 INFO L87 Difference]: Start difference. First operand 197 states and 286 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:34,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:34,860 INFO L93 Difference]: Finished difference Result 732 states and 1080 transitions. [2022-11-03 02:25:34,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:25:34,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:25:34,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:34,863 INFO L225 Difference]: With dead ends: 732 [2022-11-03 02:25:34,863 INFO L226 Difference]: Without dead ends: 553 [2022-11-03 02:25:34,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 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 02:25:34,864 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 1028 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:34,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1028 Valid, 1480 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:25:34,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-11-03 02:25:34,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 199. [2022-11-03 02:25:34,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.4545454545454546) internal successors, (288), 198 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:34,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 288 transitions. [2022-11-03 02:25:34,873 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 288 transitions. Word has length 182 [2022-11-03 02:25:34,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:34,873 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 288 transitions. [2022-11-03 02:25:34,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:34,874 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 288 transitions. [2022-11-03 02:25:34,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:25:34,876 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:34,876 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:34,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:35,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:35,091 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:35,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:35,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1042074729, now seen corresponding path program 1 times [2022-11-03 02:25:35,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:35,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1558131751] [2022-11-03 02:25:35,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:35,093 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:35,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:35,094 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:35,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 02:25:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:35,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:25:35,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:35,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:35,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:35,895 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:35,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1558131751] [2022-11-03 02:25:35,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1558131751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:35,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:35,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:25:35,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73919649] [2022-11-03 02:25:35,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:35,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:25:35,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:35,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:25:35,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:25:35,898 INFO L87 Difference]: Start difference. First operand 199 states and 288 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:36,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:36,166 INFO L93 Difference]: Finished difference Result 732 states and 1079 transitions. [2022-11-03 02:25:36,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:25:36,167 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:25:36,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:36,169 INFO L225 Difference]: With dead ends: 732 [2022-11-03 02:25:36,169 INFO L226 Difference]: Without dead ends: 553 [2022-11-03 02:25:36,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 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 02:25:36,171 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 1018 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:36,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1018 Valid, 1515 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:25:36,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-11-03 02:25:36,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 203. [2022-11-03 02:25:36,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 1.4504950495049505) internal successors, (293), 202 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:36,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 293 transitions. [2022-11-03 02:25:36,179 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 293 transitions. Word has length 182 [2022-11-03 02:25:36,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:36,179 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 293 transitions. [2022-11-03 02:25:36,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:36,180 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 293 transitions. [2022-11-03 02:25:36,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:25:36,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:36,182 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:36,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-11-03 02:25:36,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:36,405 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:36,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:36,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1709456619, now seen corresponding path program 1 times [2022-11-03 02:25:36,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:36,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1729150848] [2022-11-03 02:25:36,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:36,407 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:36,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:36,409 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:36,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 02:25:37,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:37,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:25:37,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:37,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:37,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:37,234 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:37,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1729150848] [2022-11-03 02:25:37,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1729150848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:37,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:37,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:25:37,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955147866] [2022-11-03 02:25:37,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:37,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:25:37,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:37,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:25:37,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:25:37,237 INFO L87 Difference]: Start difference. First operand 203 states and 293 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:37,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:37,443 INFO L93 Difference]: Finished difference Result 716 states and 1056 transitions. [2022-11-03 02:25:37,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:25:37,444 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:25:37,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:37,447 INFO L225 Difference]: With dead ends: 716 [2022-11-03 02:25:37,447 INFO L226 Difference]: Without dead ends: 537 [2022-11-03 02:25:37,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 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 02:25:37,448 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 983 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 1522 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:37,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 1522 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:25:37,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-11-03 02:25:37,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 205. [2022-11-03 02:25:37,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.446078431372549) internal successors, (295), 204 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:37,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 295 transitions. [2022-11-03 02:25:37,457 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 295 transitions. Word has length 182 [2022-11-03 02:25:37,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:37,457 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 295 transitions. [2022-11-03 02:25:37,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:37,458 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 295 transitions. [2022-11-03 02:25:37,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:25:37,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:37,460 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:37,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:37,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:37,673 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:37,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:37,673 INFO L85 PathProgramCache]: Analyzing trace with hash 2054284781, now seen corresponding path program 1 times [2022-11-03 02:25:37,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:37,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504151706] [2022-11-03 02:25:37,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:37,675 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:37,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:37,676 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:37,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 02:25:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:38,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:25:38,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:38,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:38,501 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:38,501 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:38,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504151706] [2022-11-03 02:25:38,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [504151706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:38,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:38,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:25:38,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737149892] [2022-11-03 02:25:38,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:38,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:25:38,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:38,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:25:38,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:25:38,506 INFO L87 Difference]: Start difference. First operand 205 states and 295 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:38,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:38,753 INFO L93 Difference]: Finished difference Result 740 states and 1089 transitions. [2022-11-03 02:25:38,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:25:38,754 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:25:38,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:38,756 INFO L225 Difference]: With dead ends: 740 [2022-11-03 02:25:38,756 INFO L226 Difference]: Without dead ends: 561 [2022-11-03 02:25:38,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:25:38,757 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 1274 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1274 SdHoareTripleChecker+Valid, 2037 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:38,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1274 Valid, 2037 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:25:38,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-11-03 02:25:38,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 207. [2022-11-03 02:25:38,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.441747572815534) internal successors, (297), 206 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:38,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 297 transitions. [2022-11-03 02:25:38,768 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 297 transitions. Word has length 182 [2022-11-03 02:25:38,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:38,769 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 297 transitions. [2022-11-03 02:25:38,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:38,769 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 297 transitions. [2022-11-03 02:25:38,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:25:38,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:38,772 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:38,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:38,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:38,993 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:38,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:38,993 INFO L85 PathProgramCache]: Analyzing trace with hash 284813167, now seen corresponding path program 1 times [2022-11-03 02:25:38,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:38,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [330787663] [2022-11-03 02:25:38,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:38,995 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:38,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:38,996 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:38,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 02:25:39,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:39,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:25:39,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:39,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:39,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:39,853 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:39,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [330787663] [2022-11-03 02:25:39,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [330787663] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:39,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:39,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:25:39,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131027833] [2022-11-03 02:25:39,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:39,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:25:39,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:39,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:25:39,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:25:39,856 INFO L87 Difference]: Start difference. First operand 207 states and 297 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:40,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:40,105 INFO L93 Difference]: Finished difference Result 740 states and 1088 transitions. [2022-11-03 02:25:40,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:25:40,106 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:25:40,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:40,108 INFO L225 Difference]: With dead ends: 740 [2022-11-03 02:25:40,108 INFO L226 Difference]: Without dead ends: 561 [2022-11-03 02:25:40,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:25:40,110 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 1266 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 2025 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 02:25:40,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1266 Valid, 2025 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:25:40,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-11-03 02:25:40,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 209. [2022-11-03 02:25:40,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.4375) internal successors, (299), 208 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:40,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 299 transitions. [2022-11-03 02:25:40,118 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 299 transitions. Word has length 182 [2022-11-03 02:25:40,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:40,118 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 299 transitions. [2022-11-03 02:25:40,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:40,119 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 299 transitions. [2022-11-03 02:25:40,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:25:40,120 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:40,120 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:40,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:40,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:40,337 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:40,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:40,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1120378511, now seen corresponding path program 1 times [2022-11-03 02:25:40,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:40,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2059516132] [2022-11-03 02:25:40,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:40,339 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:40,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:40,340 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:40,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-03 02:25:40,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:40,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:25:41,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:41,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:41,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:41,181 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:41,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2059516132] [2022-11-03 02:25:41,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2059516132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:41,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:41,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:25:41,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076189081] [2022-11-03 02:25:41,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:41,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:25:41,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:41,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:25:41,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:25:41,183 INFO L87 Difference]: Start difference. First operand 209 states and 299 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:41,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:41,480 INFO L93 Difference]: Finished difference Result 740 states and 1087 transitions. [2022-11-03 02:25:41,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:25:41,481 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:25:41,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:41,483 INFO L225 Difference]: With dead ends: 740 [2022-11-03 02:25:41,483 INFO L226 Difference]: Without dead ends: 561 [2022-11-03 02:25:41,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:25:41,484 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 1258 mSDsluCounter, 1701 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1258 SdHoareTripleChecker+Valid, 1984 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:41,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1258 Valid, 1984 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:25:41,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-11-03 02:25:41,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 211. [2022-11-03 02:25:41,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.4333333333333333) internal successors, (301), 210 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:41,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 301 transitions. [2022-11-03 02:25:41,492 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 301 transitions. Word has length 182 [2022-11-03 02:25:41,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:41,492 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 301 transitions. [2022-11-03 02:25:41,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:41,493 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 301 transitions. [2022-11-03 02:25:41,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:25:41,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:41,494 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:41,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:41,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:41,714 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:41,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:41,714 INFO L85 PathProgramCache]: Analyzing trace with hash 326202355, now seen corresponding path program 1 times [2022-11-03 02:25:41,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:41,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1065309993] [2022-11-03 02:25:41,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:41,716 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:41,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:41,717 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:41,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-03 02:25:42,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:42,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:25:42,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:42,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:42,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:42,523 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:42,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1065309993] [2022-11-03 02:25:42,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1065309993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:42,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:42,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:25:42,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254639626] [2022-11-03 02:25:42,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:42,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:25:42,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:42,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:25:42,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:25:42,525 INFO L87 Difference]: Start difference. First operand 211 states and 301 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:42,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:42,770 INFO L93 Difference]: Finished difference Result 740 states and 1086 transitions. [2022-11-03 02:25:42,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:25:42,771 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:25:42,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:42,773 INFO L225 Difference]: With dead ends: 740 [2022-11-03 02:25:42,774 INFO L226 Difference]: Without dead ends: 561 [2022-11-03 02:25:42,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:25:42,775 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 1248 mSDsluCounter, 1716 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1248 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:42,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1248 Valid, 2005 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:25:42,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-11-03 02:25:42,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 213. [2022-11-03 02:25:42,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.429245283018868) internal successors, (303), 212 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:42,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 303 transitions. [2022-11-03 02:25:42,782 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 303 transitions. Word has length 182 [2022-11-03 02:25:42,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:42,783 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 303 transitions. [2022-11-03 02:25:42,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:42,783 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 303 transitions. [2022-11-03 02:25:42,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:25:42,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:42,785 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:42,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:43,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:43,001 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:43,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:43,001 INFO L85 PathProgramCache]: Analyzing trace with hash 712064757, now seen corresponding path program 1 times [2022-11-03 02:25:43,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:43,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1541502839] [2022-11-03 02:25:43,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:43,003 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:43,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:43,004 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:43,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-03 02:25:43,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:43,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:25:43,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:43,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:43,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:43,861 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:43,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1541502839] [2022-11-03 02:25:43,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1541502839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:43,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:43,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:25:43,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195301242] [2022-11-03 02:25:43,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:43,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:25:43,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:43,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:25:43,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:25:43,864 INFO L87 Difference]: Start difference. First operand 213 states and 303 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:44,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:44,106 INFO L93 Difference]: Finished difference Result 740 states and 1085 transitions. [2022-11-03 02:25:44,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:25:44,107 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:25:44,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:44,109 INFO L225 Difference]: With dead ends: 740 [2022-11-03 02:25:44,109 INFO L226 Difference]: Without dead ends: 561 [2022-11-03 02:25:44,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:25:44,111 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 1242 mSDsluCounter, 1709 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 2002 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:44,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1242 Valid, 2002 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:25:44,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-11-03 02:25:44,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 215. [2022-11-03 02:25:44,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.425233644859813) internal successors, (305), 214 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:44,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 305 transitions. [2022-11-03 02:25:44,122 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 305 transitions. Word has length 182 [2022-11-03 02:25:44,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:44,122 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 305 transitions. [2022-11-03 02:25:44,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:44,123 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 305 transitions. [2022-11-03 02:25:44,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:25:44,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:44,124 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:44,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:44,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:44,345 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:44,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:44,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1651776905, now seen corresponding path program 1 times [2022-11-03 02:25:44,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:44,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749567205] [2022-11-03 02:25:44,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:44,348 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:44,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:44,349 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:44,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-03 02:25:44,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:44,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:25:45,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:45,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:45,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:45,143 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:45,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749567205] [2022-11-03 02:25:45,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749567205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:45,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:45,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:25:45,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960867741] [2022-11-03 02:25:45,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:45,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:25:45,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:45,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:25:45,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:25:45,146 INFO L87 Difference]: Start difference. First operand 215 states and 305 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:45,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:45,395 INFO L93 Difference]: Finished difference Result 740 states and 1084 transitions. [2022-11-03 02:25:45,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:25:45,397 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:25:45,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:45,399 INFO L225 Difference]: With dead ends: 740 [2022-11-03 02:25:45,399 INFO L226 Difference]: Without dead ends: 561 [2022-11-03 02:25:45,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:25:45,400 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 1234 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1234 SdHoareTripleChecker+Valid, 1995 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:45,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1234 Valid, 1995 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:25:45,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-11-03 02:25:45,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 217. [2022-11-03 02:25:45,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.4212962962962963) internal successors, (307), 216 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:45,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 307 transitions. [2022-11-03 02:25:45,410 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 307 transitions. Word has length 182 [2022-11-03 02:25:45,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:45,410 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 307 transitions. [2022-11-03 02:25:45,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:45,411 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 307 transitions. [2022-11-03 02:25:45,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:25:45,412 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:45,413 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:45,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:45,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:45,634 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:45,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:45,635 INFO L85 PathProgramCache]: Analyzing trace with hash 245202553, now seen corresponding path program 1 times [2022-11-03 02:25:45,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:45,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [762744729] [2022-11-03 02:25:45,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:45,636 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:45,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:45,637 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:45,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-03 02:25:46,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:46,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:25:46,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:46,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:46,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:46,388 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:46,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [762744729] [2022-11-03 02:25:46,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [762744729] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:46,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:46,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:25:46,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368059794] [2022-11-03 02:25:46,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:46,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:25:46,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:46,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:25:46,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:25:46,390 INFO L87 Difference]: Start difference. First operand 217 states and 307 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:46,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:46,683 INFO L93 Difference]: Finished difference Result 576 states and 840 transitions. [2022-11-03 02:25:46,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:25:46,684 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:25:46,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:46,685 INFO L225 Difference]: With dead ends: 576 [2022-11-03 02:25:46,685 INFO L226 Difference]: Without dead ends: 397 [2022-11-03 02:25:46,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:25:46,686 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 980 mSDsluCounter, 1029 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:46,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [980 Valid, 1319 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:25:46,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-11-03 02:25:46,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 219. [2022-11-03 02:25:46,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.4174311926605505) internal successors, (309), 218 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:46,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 309 transitions. [2022-11-03 02:25:46,693 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 309 transitions. Word has length 182 [2022-11-03 02:25:46,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:46,694 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 309 transitions. [2022-11-03 02:25:46,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:46,694 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 309 transitions. [2022-11-03 02:25:46,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:25:46,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:46,695 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:46,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:46,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:46,905 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:46,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:46,905 INFO L85 PathProgramCache]: Analyzing trace with hash -181351945, now seen corresponding path program 1 times [2022-11-03 02:25:46,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:46,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [44049085] [2022-11-03 02:25:46,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:46,906 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:46,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:46,907 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:46,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-03 02:25:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:47,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:25:47,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:47,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:47,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:47,688 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:47,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [44049085] [2022-11-03 02:25:47,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [44049085] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:47,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:47,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:25:47,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172339736] [2022-11-03 02:25:47,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:47,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:25:47,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:47,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:25:47,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:25:47,690 INFO L87 Difference]: Start difference. First operand 219 states and 309 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:47,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:47,904 INFO L93 Difference]: Finished difference Result 716 states and 1048 transitions. [2022-11-03 02:25:47,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:25:47,905 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:25:47,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:47,907 INFO L225 Difference]: With dead ends: 716 [2022-11-03 02:25:47,907 INFO L226 Difference]: Without dead ends: 537 [2022-11-03 02:25:47,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 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 02:25:47,908 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 927 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:47,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [927 Valid, 1478 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:25:47,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-11-03 02:25:47,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 221. [2022-11-03 02:25:47,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.4136363636363636) internal successors, (311), 220 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:47,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 311 transitions. [2022-11-03 02:25:47,916 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 311 transitions. Word has length 182 [2022-11-03 02:25:47,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:47,916 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 311 transitions. [2022-11-03 02:25:47,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:47,917 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 311 transitions. [2022-11-03 02:25:47,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:25:47,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:47,918 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:47,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:48,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:48,129 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:48,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:48,129 INFO L85 PathProgramCache]: Analyzing trace with hash -337332487, now seen corresponding path program 1 times [2022-11-03 02:25:48,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:48,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1834937939] [2022-11-03 02:25:48,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:48,130 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:48,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:48,131 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:48,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-03 02:25:48,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:48,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:25:48,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:48,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:48,966 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:48,967 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:48,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1834937939] [2022-11-03 02:25:48,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1834937939] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:48,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:48,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:25:48,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478055216] [2022-11-03 02:25:48,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:48,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:25:48,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:48,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:25:48,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:25:48,972 INFO L87 Difference]: Start difference. First operand 221 states and 311 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:49,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:49,266 INFO L93 Difference]: Finished difference Result 756 states and 1105 transitions. [2022-11-03 02:25:49,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:25:49,267 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:25:49,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:49,269 INFO L225 Difference]: With dead ends: 756 [2022-11-03 02:25:49,269 INFO L226 Difference]: Without dead ends: 577 [2022-11-03 02:25:49,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:25:49,271 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 1242 mSDsluCounter, 1667 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 1961 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:49,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1242 Valid, 1961 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:25:49,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-11-03 02:25:49,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 223. [2022-11-03 02:25:49,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.40990990990991) internal successors, (313), 222 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:49,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 313 transitions. [2022-11-03 02:25:49,279 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 313 transitions. Word has length 182 [2022-11-03 02:25:49,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:49,279 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 313 transitions. [2022-11-03 02:25:49,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:49,279 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 313 transitions. [2022-11-03 02:25:49,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:25:49,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:49,281 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:49,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:49,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:49,501 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:49,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:49,502 INFO L85 PathProgramCache]: Analyzing trace with hash -2125202309, now seen corresponding path program 1 times [2022-11-03 02:25:49,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:49,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123608094] [2022-11-03 02:25:49,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:49,503 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:49,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:49,504 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:49,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-03 02:25:50,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:50,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:25:50,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:50,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:50,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:50,300 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:50,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123608094] [2022-11-03 02:25:50,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123608094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:50,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:50,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:25:50,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682995564] [2022-11-03 02:25:50,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:50,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:25:50,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:50,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:25:50,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:25:50,303 INFO L87 Difference]: Start difference. First operand 223 states and 313 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:50,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:50,521 INFO L93 Difference]: Finished difference Result 716 states and 1046 transitions. [2022-11-03 02:25:50,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:25:50,525 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:25:50,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:50,529 INFO L225 Difference]: With dead ends: 716 [2022-11-03 02:25:50,529 INFO L226 Difference]: Without dead ends: 537 [2022-11-03 02:25:50,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 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 02:25:50,530 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 913 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 1467 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 02:25:50,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 1467 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:25:50,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-11-03 02:25:50,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 225. [2022-11-03 02:25:50,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.40625) internal successors, (315), 224 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:50,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 315 transitions. [2022-11-03 02:25:50,539 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 315 transitions. Word has length 182 [2022-11-03 02:25:50,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:50,540 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 315 transitions. [2022-11-03 02:25:50,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:50,540 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 315 transitions. [2022-11-03 02:25:50,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:25:50,541 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:50,541 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:50,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:50,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:50,757 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:50,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:50,757 INFO L85 PathProgramCache]: Analyzing trace with hash -2055554435, now seen corresponding path program 1 times [2022-11-03 02:25:50,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:50,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2109076177] [2022-11-03 02:25:50,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:50,758 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:50,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:50,759 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:50,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-03 02:25:51,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:51,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 02:25:51,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:51,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:51,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:51,790 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:51,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2109076177] [2022-11-03 02:25:51,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2109076177] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:51,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:51,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:25:51,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492398132] [2022-11-03 02:25:51,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:51,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:25:51,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:51,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:25:51,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:25:51,792 INFO L87 Difference]: Start difference. First operand 225 states and 315 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:52,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:52,254 INFO L93 Difference]: Finished difference Result 756 states and 1103 transitions. [2022-11-03 02:25:52,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:25:52,255 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:25:52,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:52,257 INFO L225 Difference]: With dead ends: 756 [2022-11-03 02:25:52,258 INFO L226 Difference]: Without dead ends: 577 [2022-11-03 02:25:52,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:25:52,260 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 1221 mSDsluCounter, 1558 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1221 SdHoareTripleChecker+Valid, 1830 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:52,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1221 Valid, 1830 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:25:52,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-11-03 02:25:52,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 227. [2022-11-03 02:25:52,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.4026548672566372) internal successors, (317), 226 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:52,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 317 transitions. [2022-11-03 02:25:52,275 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 317 transitions. Word has length 182 [2022-11-03 02:25:52,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:52,275 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 317 transitions. [2022-11-03 02:25:52,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:52,276 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 317 transitions. [2022-11-03 02:25:52,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:25:52,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:52,277 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:52,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:52,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:52,490 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:52,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:52,491 INFO L85 PathProgramCache]: Analyzing trace with hash -656600833, now seen corresponding path program 1 times [2022-11-03 02:25:52,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:52,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [621607562] [2022-11-03 02:25:52,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:52,493 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:52,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:52,494 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:52,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-03 02:25:53,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:53,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:25:53,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:53,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:53,215 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:53,215 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:53,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [621607562] [2022-11-03 02:25:53,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [621607562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:53,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:53,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:25:53,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447520403] [2022-11-03 02:25:53,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:53,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:25:53,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:53,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:25:53,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:25:53,217 INFO L87 Difference]: Start difference. First operand 227 states and 317 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:53,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:53,438 INFO L93 Difference]: Finished difference Result 716 states and 1044 transitions. [2022-11-03 02:25:53,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:25:53,438 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:25:53,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:53,441 INFO L225 Difference]: With dead ends: 716 [2022-11-03 02:25:53,442 INFO L226 Difference]: Without dead ends: 537 [2022-11-03 02:25:53,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 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 02:25:53,443 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 899 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:53,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 1442 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:25:53,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-11-03 02:25:53,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 229. [2022-11-03 02:25:53,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 1.3991228070175439) internal successors, (319), 228 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:53,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 319 transitions. [2022-11-03 02:25:53,451 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 319 transitions. Word has length 182 [2022-11-03 02:25:53,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:53,451 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 319 transitions. [2022-11-03 02:25:53,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:53,452 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 319 transitions. [2022-11-03 02:25:53,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:25:53,453 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:53,453 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:53,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:53,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:53,665 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:53,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:53,665 INFO L85 PathProgramCache]: Analyzing trace with hash -293134335, now seen corresponding path program 1 times [2022-11-03 02:25:53,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:53,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [934829864] [2022-11-03 02:25:53,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:53,666 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:53,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:53,667 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:53,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-03 02:25:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:54,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:25:54,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:54,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:54,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:54,493 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:54,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [934829864] [2022-11-03 02:25:54,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [934829864] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:54,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:54,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:25:54,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545388339] [2022-11-03 02:25:54,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:54,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:25:54,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:54,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:25:54,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:25:54,496 INFO L87 Difference]: Start difference. First operand 229 states and 319 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:54,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:54,719 INFO L93 Difference]: Finished difference Result 760 states and 1107 transitions. [2022-11-03 02:25:54,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:25:54,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:25:54,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:54,725 INFO L225 Difference]: With dead ends: 760 [2022-11-03 02:25:54,725 INFO L226 Difference]: Without dead ends: 581 [2022-11-03 02:25:54,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:25:54,726 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 1208 mSDsluCounter, 1642 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1208 SdHoareTripleChecker+Valid, 1954 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:54,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1208 Valid, 1954 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:25:54,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2022-11-03 02:25:54,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 235. [2022-11-03 02:25:54,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.3974358974358974) internal successors, (327), 234 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:54,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 327 transitions. [2022-11-03 02:25:54,733 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 327 transitions. Word has length 182 [2022-11-03 02:25:54,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:54,734 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 327 transitions. [2022-11-03 02:25:54,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:54,734 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 327 transitions. [2022-11-03 02:25:54,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:25:54,735 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:54,735 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:54,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:54,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:54,956 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:54,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:54,956 INFO L85 PathProgramCache]: Analyzing trace with hash -727639933, now seen corresponding path program 1 times [2022-11-03 02:25:54,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:54,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536595470] [2022-11-03 02:25:54,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:54,958 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:54,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:54,959 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:54,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-03 02:25:55,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:55,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 02:25:55,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:55,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:55,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:55,987 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:55,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1536595470] [2022-11-03 02:25:55,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1536595470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:55,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:55,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:25:55,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824546903] [2022-11-03 02:25:55,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:55,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:25:55,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:55,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:25:55,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:25:55,990 INFO L87 Difference]: Start difference. First operand 235 states and 327 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:56,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:56,444 INFO L93 Difference]: Finished difference Result 756 states and 1100 transitions. [2022-11-03 02:25:56,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:25:56,445 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:25:56,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:56,448 INFO L225 Difference]: With dead ends: 756 [2022-11-03 02:25:56,448 INFO L226 Difference]: Without dead ends: 577 [2022-11-03 02:25:56,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:25:56,449 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 1187 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 1797 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:56,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1187 Valid, 1797 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:25:56,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-11-03 02:25:56,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 237. [2022-11-03 02:25:56,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.3940677966101696) internal successors, (329), 236 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:56,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 329 transitions. [2022-11-03 02:25:56,457 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 329 transitions. Word has length 182 [2022-11-03 02:25:56,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:56,457 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 329 transitions. [2022-11-03 02:25:56,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:56,457 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 329 transitions. [2022-11-03 02:25:56,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:25:56,458 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:56,459 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:56,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:56,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:56,678 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:56,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:56,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1434236539, now seen corresponding path program 1 times [2022-11-03 02:25:56,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:56,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [826651995] [2022-11-03 02:25:56,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:56,680 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:56,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:56,682 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:56,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-03 02:25:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:57,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:25:57,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:57,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:57,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:57,424 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:57,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [826651995] [2022-11-03 02:25:57,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [826651995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:57,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:57,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:25:57,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005246509] [2022-11-03 02:25:57,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:57,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:25:57,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:57,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:25:57,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:25:57,429 INFO L87 Difference]: Start difference. First operand 237 states and 329 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:57,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:57,632 INFO L93 Difference]: Finished difference Result 716 states and 1041 transitions. [2022-11-03 02:25:57,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:25:57,633 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:25:57,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:57,636 INFO L225 Difference]: With dead ends: 716 [2022-11-03 02:25:57,636 INFO L226 Difference]: Without dead ends: 537 [2022-11-03 02:25:57,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 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 02:25:57,637 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 868 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:57,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [868 Valid, 1424 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:25:57,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-11-03 02:25:57,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 239. [2022-11-03 02:25:57,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.3907563025210083) internal successors, (331), 238 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:57,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 331 transitions. [2022-11-03 02:25:57,644 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 331 transitions. Word has length 182 [2022-11-03 02:25:57,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:57,645 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 331 transitions. [2022-11-03 02:25:57,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:57,645 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 331 transitions. [2022-11-03 02:25:57,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:25:57,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:57,646 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:57,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:57,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:57,867 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:57,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:57,867 INFO L85 PathProgramCache]: Analyzing trace with hash -572402937, now seen corresponding path program 1 times [2022-11-03 02:25:57,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:57,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [770792149] [2022-11-03 02:25:57,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:57,868 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:57,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:57,869 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:57,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-03 02:25:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:58,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:25:58,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:58,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:58,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:58,687 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:58,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [770792149] [2022-11-03 02:25:58,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [770792149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:58,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:58,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:25:58,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563882979] [2022-11-03 02:25:58,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:58,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:25:58,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:58,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:25:58,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:25:58,690 INFO L87 Difference]: Start difference. First operand 239 states and 331 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:58,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:58,933 INFO L93 Difference]: Finished difference Result 770 states and 1119 transitions. [2022-11-03 02:25:58,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:25:58,934 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:25:58,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:58,936 INFO L225 Difference]: With dead ends: 770 [2022-11-03 02:25:58,937 INFO L226 Difference]: Without dead ends: 591 [2022-11-03 02:25:58,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 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 02:25:58,938 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 957 mSDsluCounter, 1174 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 1489 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:58,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 1489 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:25:58,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-11-03 02:25:58,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 243. [2022-11-03 02:25:58,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.3884297520661157) internal successors, (336), 242 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:58,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 336 transitions. [2022-11-03 02:25:58,953 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 336 transitions. Word has length 182 [2022-11-03 02:25:58,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:58,953 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 336 transitions. [2022-11-03 02:25:58,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:58,954 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 336 transitions. [2022-11-03 02:25:58,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:25:58,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:58,955 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:58,974 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-11-03 02:25:59,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:59,161 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:59,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:59,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1854575223, now seen corresponding path program 1 times [2022-11-03 02:25:59,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:59,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413853122] [2022-11-03 02:25:59,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:59,162 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:59,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:59,163 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:59,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-03 02:25:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:59,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:25:59,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:59,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:59,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:59,999 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:59,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [413853122] [2022-11-03 02:25:59,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [413853122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:59,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:59,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:00,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786968990] [2022-11-03 02:26:00,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:00,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:00,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:00,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:00,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:00,001 INFO L87 Difference]: Start difference. First operand 243 states and 336 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:00,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:00,232 INFO L93 Difference]: Finished difference Result 780 states and 1133 transitions. [2022-11-03 02:26:00,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:26:00,233 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:26:00,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:00,235 INFO L225 Difference]: With dead ends: 780 [2022-11-03 02:26:00,236 INFO L226 Difference]: Without dead ends: 601 [2022-11-03 02:26:00,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 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 02:26:00,237 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 959 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:00,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 1497 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:26:00,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2022-11-03 02:26:00,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 249. [2022-11-03 02:26:00,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.3870967741935485) internal successors, (344), 248 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:00,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 344 transitions. [2022-11-03 02:26:00,245 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 344 transitions. Word has length 182 [2022-11-03 02:26:00,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:00,245 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 344 transitions. [2022-11-03 02:26:00,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:00,246 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 344 transitions. [2022-11-03 02:26:00,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:26:00,247 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:00,247 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:00,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:00,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:00,467 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:00,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:00,468 INFO L85 PathProgramCache]: Analyzing trace with hash -127430261, now seen corresponding path program 1 times [2022-11-03 02:26:00,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:00,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [269939361] [2022-11-03 02:26:00,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:00,469 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:00,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:00,470 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:00,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-03 02:26:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:01,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 02:26:01,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:01,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:01,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:01,297 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:01,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [269939361] [2022-11-03 02:26:01,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [269939361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:01,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:01,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:26:01,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263932434] [2022-11-03 02:26:01,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:01,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:26:01,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:01,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:26:01,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:26:01,299 INFO L87 Difference]: Start difference. First operand 249 states and 344 transitions. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:01,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:01,474 INFO L93 Difference]: Finished difference Result 608 states and 877 transitions. [2022-11-03 02:26:01,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:26:01,475 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:26:01,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:01,476 INFO L225 Difference]: With dead ends: 608 [2022-11-03 02:26:01,476 INFO L226 Difference]: Without dead ends: 429 [2022-11-03 02:26:01,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 179 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 02:26:01,478 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 433 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:01,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 832 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:26:01,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-11-03 02:26:01,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 251. [2022-11-03 02:26:01,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.384) internal successors, (346), 250 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 02:26:01,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 346 transitions. [2022-11-03 02:26:01,486 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 346 transitions. Word has length 182 [2022-11-03 02:26:01,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:01,486 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 346 transitions. [2022-11-03 02:26:01,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:01,486 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 346 transitions. [2022-11-03 02:26:01,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:26:01,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:01,488 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:01,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:01,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:01,708 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:01,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:01,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1519932681, now seen corresponding path program 1 times [2022-11-03 02:26:01,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:01,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273307283] [2022-11-03 02:26:01,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:01,709 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:01,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:01,711 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:01,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-03 02:26:02,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:02,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:26:02,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:02,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:02,429 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:02,429 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:02,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273307283] [2022-11-03 02:26:02,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273307283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:02,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:02,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:26:02,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772237810] [2022-11-03 02:26:02,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:02,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:26:02,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:02,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:26:02,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:26:02,432 INFO L87 Difference]: Start difference. First operand 251 states and 346 transitions. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:02,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:02,475 INFO L93 Difference]: Finished difference Result 715 states and 1036 transitions. [2022-11-03 02:26:02,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:26:02,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:26:02,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:02,477 INFO L225 Difference]: With dead ends: 715 [2022-11-03 02:26:02,477 INFO L226 Difference]: Without dead ends: 536 [2022-11-03 02:26:02,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 179 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 02:26:02,478 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 587 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:02,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 1015 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:26:02,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2022-11-03 02:26:02,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 253. [2022-11-03 02:26:02,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.380952380952381) internal successors, (348), 252 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:02,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 348 transitions. [2022-11-03 02:26:02,485 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 348 transitions. Word has length 182 [2022-11-03 02:26:02,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:02,486 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 348 transitions. [2022-11-03 02:26:02,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:02,486 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 348 transitions. [2022-11-03 02:26:02,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:26:02,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:02,487 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:02,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:02,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:02,707 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:02,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:02,707 INFO L85 PathProgramCache]: Analyzing trace with hash 481348107, now seen corresponding path program 1 times [2022-11-03 02:26:02,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:02,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [907930399] [2022-11-03 02:26:02,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:02,709 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:02,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:02,709 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:02,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-03 02:26:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:03,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:26:03,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:03,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:03,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:03,519 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:03,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [907930399] [2022-11-03 02:26:03,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [907930399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:03,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:03,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:26:03,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652350342] [2022-11-03 02:26:03,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:03,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:26:03,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:03,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:26:03,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:26:03,521 INFO L87 Difference]: Start difference. First operand 253 states and 348 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:03,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:03,770 INFO L93 Difference]: Finished difference Result 760 states and 1100 transitions. [2022-11-03 02:26:03,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:26:03,771 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:26:03,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:03,773 INFO L225 Difference]: With dead ends: 760 [2022-11-03 02:26:03,773 INFO L226 Difference]: Without dead ends: 581 [2022-11-03 02:26:03,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:26:03,774 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 1137 mSDsluCounter, 1552 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 1887 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:03,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1137 Valid, 1887 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:26:03,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2022-11-03 02:26:03,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 255. [2022-11-03 02:26:03,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.3779527559055118) internal successors, (350), 254 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:03,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 350 transitions. [2022-11-03 02:26:03,780 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 350 transitions. Word has length 182 [2022-11-03 02:26:03,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:03,780 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 350 transitions. [2022-11-03 02:26:03,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:03,780 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 350 transitions. [2022-11-03 02:26:03,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:26:03,781 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:03,782 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:03,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:03,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:03,997 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:03,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:03,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1660512371, now seen corresponding path program 1 times [2022-11-03 02:26:03,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:03,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1989972128] [2022-11-03 02:26:03,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:03,998 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:03,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:03,999 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:04,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-03 02:26:04,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:04,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:26:04,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:04,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:04,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:04,856 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:04,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1989972128] [2022-11-03 02:26:04,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1989972128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:04,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:04,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:04,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063375514] [2022-11-03 02:26:04,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:04,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:04,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:04,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:04,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:04,858 INFO L87 Difference]: Start difference. First operand 255 states and 350 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:05,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:05,089 INFO L93 Difference]: Finished difference Result 788 states and 1141 transitions. [2022-11-03 02:26:05,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:26:05,090 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:26:05,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:05,091 INFO L225 Difference]: With dead ends: 788 [2022-11-03 02:26:05,091 INFO L226 Difference]: Without dead ends: 609 [2022-11-03 02:26:05,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 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 02:26:05,092 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 945 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:05,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 1491 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:26:05,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2022-11-03 02:26:05,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 257. [2022-11-03 02:26:05,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.375) internal successors, (352), 256 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:05,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 352 transitions. [2022-11-03 02:26:05,099 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 352 transitions. Word has length 182 [2022-11-03 02:26:05,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:05,100 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 352 transitions. [2022-11-03 02:26:05,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:05,100 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 352 transitions. [2022-11-03 02:26:05,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:26:05,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:05,101 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:05,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:05,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:05,316 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:05,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:05,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1542070897, now seen corresponding path program 1 times [2022-11-03 02:26:05,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:05,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [701740827] [2022-11-03 02:26:05,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:05,318 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:05,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:05,319 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:05,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-03 02:26:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:05,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 02:26:05,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:06,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:06,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:06,425 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:06,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [701740827] [2022-11-03 02:26:06,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [701740827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:06,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:06,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:26:06,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455648173] [2022-11-03 02:26:06,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:06,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:26:06,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:06,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:26:06,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:26:06,427 INFO L87 Difference]: Start difference. First operand 257 states and 352 transitions. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:06,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:06,622 INFO L93 Difference]: Finished difference Result 715 states and 1033 transitions. [2022-11-03 02:26:06,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:26:06,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:26:06,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:06,623 INFO L225 Difference]: With dead ends: 715 [2022-11-03 02:26:06,624 INFO L226 Difference]: Without dead ends: 536 [2022-11-03 02:26:06,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 179 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 02:26:06,625 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 568 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:06,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 990 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:26:06,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2022-11-03 02:26:06,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 259. [2022-11-03 02:26:06,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 1.372093023255814) internal successors, (354), 258 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:06,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 354 transitions. [2022-11-03 02:26:06,631 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 354 transitions. Word has length 182 [2022-11-03 02:26:06,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:06,632 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 354 transitions. [2022-11-03 02:26:06,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:06,632 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 354 transitions. [2022-11-03 02:26:06,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:26:06,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:06,633 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:06,651 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2022-11-03 02:26:06,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:06,845 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:06,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:06,845 INFO L85 PathProgramCache]: Analyzing trace with hash 719502353, now seen corresponding path program 1 times [2022-11-03 02:26:06,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:06,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [19888037] [2022-11-03 02:26:06,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:06,846 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:06,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:06,847 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:06,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-03 02:26:07,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:07,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 02:26:07,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:07,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:07,814 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:07,814 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:07,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [19888037] [2022-11-03 02:26:07,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [19888037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:07,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:07,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:26:07,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553569168] [2022-11-03 02:26:07,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:07,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:26:07,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:07,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:26:07,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:26:07,816 INFO L87 Difference]: Start difference. First operand 259 states and 354 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:08,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:08,266 INFO L93 Difference]: Finished difference Result 756 states and 1091 transitions. [2022-11-03 02:26:08,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:26:08,267 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:26:08,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:08,269 INFO L225 Difference]: With dead ends: 756 [2022-11-03 02:26:08,269 INFO L226 Difference]: Without dead ends: 577 [2022-11-03 02:26:08,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:26:08,270 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 1100 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 1718 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:08,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1100 Valid, 1718 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:26:08,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-11-03 02:26:08,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 261. [2022-11-03 02:26:08,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.3692307692307693) internal successors, (356), 260 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:08,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 356 transitions. [2022-11-03 02:26:08,277 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 356 transitions. Word has length 182 [2022-11-03 02:26:08,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:08,277 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 356 transitions. [2022-11-03 02:26:08,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:08,277 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 356 transitions. [2022-11-03 02:26:08,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:26:08,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:08,279 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:08,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2022-11-03 02:26:08,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:08,493 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:08,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:08,493 INFO L85 PathProgramCache]: Analyzing trace with hash -587640045, now seen corresponding path program 1 times [2022-11-03 02:26:08,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:08,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1688241181] [2022-11-03 02:26:08,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:08,494 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:08,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:08,495 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:08,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-03 02:26:09,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:09,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:26:09,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:09,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:09,205 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:09,206 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:09,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1688241181] [2022-11-03 02:26:09,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1688241181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:09,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:09,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:09,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189089357] [2022-11-03 02:26:09,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:09,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:09,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:09,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:09,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:09,207 INFO L87 Difference]: Start difference. First operand 261 states and 356 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:09,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:09,435 INFO L93 Difference]: Finished difference Result 716 states and 1032 transitions. [2022-11-03 02:26:09,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:26:09,436 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:26:09,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:09,437 INFO L225 Difference]: With dead ends: 716 [2022-11-03 02:26:09,437 INFO L226 Difference]: Without dead ends: 537 [2022-11-03 02:26:09,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 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 02:26:09,438 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 790 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:09,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 1379 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:26:09,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-11-03 02:26:09,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 263. [2022-11-03 02:26:09,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 1.366412213740458) internal successors, (358), 262 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:09,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 358 transitions. [2022-11-03 02:26:09,442 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 358 transitions. Word has length 182 [2022-11-03 02:26:09,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:09,442 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 358 transitions. [2022-11-03 02:26:09,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:09,443 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 358 transitions. [2022-11-03 02:26:09,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:26:09,443 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:09,443 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:09,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:09,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:09,644 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:09,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:09,644 INFO L85 PathProgramCache]: Analyzing trace with hash 443400853, now seen corresponding path program 1 times [2022-11-03 02:26:09,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:09,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1164602182] [2022-11-03 02:26:09,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:09,646 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:09,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:09,646 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:09,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-03 02:26:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:10,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 02:26:10,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:10,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:10,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:10,738 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:10,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1164602182] [2022-11-03 02:26:10,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1164602182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:10,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:10,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:10,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513375240] [2022-11-03 02:26:10,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:10,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:10,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:10,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:10,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:10,740 INFO L87 Difference]: Start difference. First operand 263 states and 358 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:11,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:11,031 INFO L93 Difference]: Finished difference Result 794 states and 1146 transitions. [2022-11-03 02:26:11,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:26:11,033 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:26:11,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:11,034 INFO L225 Difference]: With dead ends: 794 [2022-11-03 02:26:11,034 INFO L226 Difference]: Without dead ends: 615 [2022-11-03 02:26:11,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 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 02:26:11,035 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 921 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:11,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 1478 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:26:11,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-11-03 02:26:11,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 267. [2022-11-03 02:26:11,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.3646616541353382) internal successors, (363), 266 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:11,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 363 transitions. [2022-11-03 02:26:11,042 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 363 transitions. Word has length 182 [2022-11-03 02:26:11,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:11,042 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 363 transitions. [2022-11-03 02:26:11,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:11,043 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 363 transitions. [2022-11-03 02:26:11,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:26:11,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:11,044 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:11,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:11,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:11,264 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:11,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:11,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1794786071, now seen corresponding path program 1 times [2022-11-03 02:26:11,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:11,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [567508253] [2022-11-03 02:26:11,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:11,266 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:11,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:11,267 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:11,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-03 02:26:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:11,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 02:26:11,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:12,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:12,282 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:12,282 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:12,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [567508253] [2022-11-03 02:26:12,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [567508253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:12,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:12,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:26:12,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068806015] [2022-11-03 02:26:12,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:12,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:26:12,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:12,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:26:12,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:26:12,285 INFO L87 Difference]: Start difference. First operand 267 states and 363 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:12,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:12,730 INFO L93 Difference]: Finished difference Result 756 states and 1088 transitions. [2022-11-03 02:26:12,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:26:12,731 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:26:12,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:12,732 INFO L225 Difference]: With dead ends: 756 [2022-11-03 02:26:12,732 INFO L226 Difference]: Without dead ends: 577 [2022-11-03 02:26:12,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:26:12,733 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 1066 mSDsluCounter, 1363 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:12,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1066 Valid, 1686 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:26:12,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-11-03 02:26:12,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 271. [2022-11-03 02:26:12,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 1.362962962962963) internal successors, (368), 270 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:12,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 368 transitions. [2022-11-03 02:26:12,739 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 368 transitions. Word has length 182 [2022-11-03 02:26:12,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:12,740 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 368 transitions. [2022-11-03 02:26:12,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:12,740 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 368 transitions. [2022-11-03 02:26:12,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:26:12,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:12,741 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:12,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2022-11-03 02:26:12,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:12,962 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:12,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:12,962 INFO L85 PathProgramCache]: Analyzing trace with hash -145795943, now seen corresponding path program 1 times [2022-11-03 02:26:12,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:12,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [887247683] [2022-11-03 02:26:12,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:12,963 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:12,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:12,964 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:12,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-03 02:26:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:13,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:26:13,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:13,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:13,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:13,694 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:13,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [887247683] [2022-11-03 02:26:13,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [887247683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:13,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:13,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:13,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505616678] [2022-11-03 02:26:13,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:13,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:13,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:13,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:13,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:13,696 INFO L87 Difference]: Start difference. First operand 271 states and 368 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:13,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:13,902 INFO L93 Difference]: Finished difference Result 716 states and 1029 transitions. [2022-11-03 02:26:13,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:26:13,902 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:26:13,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:13,904 INFO L225 Difference]: With dead ends: 716 [2022-11-03 02:26:13,905 INFO L226 Difference]: Without dead ends: 537 [2022-11-03 02:26:13,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 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 02:26:13,905 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 759 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:13,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 1361 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:26:13,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-11-03 02:26:13,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 273. [2022-11-03 02:26:13,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.3602941176470589) internal successors, (370), 272 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 02:26:13,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 370 transitions. [2022-11-03 02:26:13,912 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 370 transitions. Word has length 182 [2022-11-03 02:26:13,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:13,913 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 370 transitions. [2022-11-03 02:26:13,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:13,913 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 370 transitions. [2022-11-03 02:26:13,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:26:13,914 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:13,914 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:13,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:14,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:14,135 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:14,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:14,136 INFO L85 PathProgramCache]: Analyzing trace with hash -916529509, now seen corresponding path program 1 times [2022-11-03 02:26:14,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:14,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1760296276] [2022-11-03 02:26:14,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:14,137 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:14,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:14,138 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:14,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-03 02:26:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:14,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:26:14,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:15,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:15,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:15,020 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:15,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1760296276] [2022-11-03 02:26:15,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1760296276] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:15,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:15,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:15,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562268183] [2022-11-03 02:26:15,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:15,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:15,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:15,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:15,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:15,022 INFO L87 Difference]: Start difference. First operand 273 states and 370 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:15,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:15,249 INFO L93 Difference]: Finished difference Result 802 states and 1155 transitions. [2022-11-03 02:26:15,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:26:15,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:26:15,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:15,251 INFO L225 Difference]: With dead ends: 802 [2022-11-03 02:26:15,251 INFO L226 Difference]: Without dead ends: 623 [2022-11-03 02:26:15,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 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 02:26:15,252 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 913 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:15,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 1472 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:26:15,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2022-11-03 02:26:15,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 275. [2022-11-03 02:26:15,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 1.3576642335766422) internal successors, (372), 274 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:15,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 372 transitions. [2022-11-03 02:26:15,258 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 372 transitions. Word has length 182 [2022-11-03 02:26:15,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:15,258 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 372 transitions. [2022-11-03 02:26:15,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:15,259 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 372 transitions. [2022-11-03 02:26:15,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:26:15,260 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:15,260 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:15,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:15,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:15,477 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:15,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:15,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1502805731, now seen corresponding path program 1 times [2022-11-03 02:26:15,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:15,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2077251930] [2022-11-03 02:26:15,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:15,479 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:15,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:15,480 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:15,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-03 02:26:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:16,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 02:26:16,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:16,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:16,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:16,610 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:16,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2077251930] [2022-11-03 02:26:16,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2077251930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:16,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:16,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:26:16,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865973948] [2022-11-03 02:26:16,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:16,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:26:16,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:16,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:26:16,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:26:16,612 INFO L87 Difference]: Start difference. First operand 275 states and 372 transitions. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:16,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:16,792 INFO L93 Difference]: Finished difference Result 715 states and 1026 transitions. [2022-11-03 02:26:16,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:26:16,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:26:16,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:16,794 INFO L225 Difference]: With dead ends: 715 [2022-11-03 02:26:16,794 INFO L226 Difference]: Without dead ends: 536 [2022-11-03 02:26:16,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 179 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 02:26:16,794 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 516 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:16,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 983 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:26:16,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2022-11-03 02:26:16,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 277. [2022-11-03 02:26:16,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.355072463768116) internal successors, (374), 276 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:16,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 374 transitions. [2022-11-03 02:26:16,801 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 374 transitions. Word has length 182 [2022-11-03 02:26:16,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:16,801 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 374 transitions. [2022-11-03 02:26:16,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:16,802 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 374 transitions. [2022-11-03 02:26:16,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:26:16,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:16,803 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:16,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2022-11-03 02:26:17,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:17,017 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:17,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:17,017 INFO L85 PathProgramCache]: Analyzing trace with hash 373677087, now seen corresponding path program 1 times [2022-11-03 02:26:17,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:17,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974822973] [2022-11-03 02:26:17,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:17,019 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:17,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:17,020 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:17,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-03 02:26:17,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:17,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:26:17,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:17,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:17,755 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:17,756 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:17,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974822973] [2022-11-03 02:26:17,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974822973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:17,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:17,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:17,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268460604] [2022-11-03 02:26:17,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:17,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:17,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:17,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:17,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:17,758 INFO L87 Difference]: Start difference. First operand 277 states and 374 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:17,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:17,962 INFO L93 Difference]: Finished difference Result 716 states and 1026 transitions. [2022-11-03 02:26:17,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:26:17,963 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:26:17,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:17,965 INFO L225 Difference]: With dead ends: 716 [2022-11-03 02:26:17,965 INFO L226 Difference]: Without dead ends: 537 [2022-11-03 02:26:17,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 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 02:26:17,966 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 738 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:17,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 1349 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:26:17,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-11-03 02:26:17,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 279. [2022-11-03 02:26:17,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 278 states have (on average 1.3525179856115108) internal successors, (376), 278 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:17,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 376 transitions. [2022-11-03 02:26:17,972 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 376 transitions. Word has length 182 [2022-11-03 02:26:17,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:17,973 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 376 transitions. [2022-11-03 02:26:17,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:17,973 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 376 transitions. [2022-11-03 02:26:17,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:26:17,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:17,975 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:18,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:18,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:18,196 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:18,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:18,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1698533281, now seen corresponding path program 1 times [2022-11-03 02:26:18,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:18,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1545938120] [2022-11-03 02:26:18,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:18,198 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:18,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:18,198 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:18,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-03 02:26:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:18,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:26:18,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:19,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:19,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:19,125 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:19,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1545938120] [2022-11-03 02:26:19,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1545938120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:19,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:19,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:19,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853725791] [2022-11-03 02:26:19,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:19,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:19,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:19,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:19,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:19,127 INFO L87 Difference]: Start difference. First operand 279 states and 376 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:19,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:19,386 INFO L93 Difference]: Finished difference Result 812 states and 1167 transitions. [2022-11-03 02:26:19,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:26:19,388 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:26:19,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:19,391 INFO L225 Difference]: With dead ends: 812 [2022-11-03 02:26:19,391 INFO L226 Difference]: Without dead ends: 633 [2022-11-03 02:26:19,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 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 02:26:19,392 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 911 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:19,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 1474 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:26:19,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-11-03 02:26:19,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 281. [2022-11-03 02:26:19,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 1.35) internal successors, (378), 280 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:19,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 378 transitions. [2022-11-03 02:26:19,396 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 378 transitions. Word has length 182 [2022-11-03 02:26:19,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:19,397 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 378 transitions. [2022-11-03 02:26:19,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:19,397 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 378 transitions. [2022-11-03 02:26:19,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:26:19,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:19,398 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:19,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2022-11-03 02:26:19,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:19,599 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:19,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:19,599 INFO L85 PathProgramCache]: Analyzing trace with hash 640695203, now seen corresponding path program 1 times [2022-11-03 02:26:19,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:19,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2069470626] [2022-11-03 02:26:19,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:19,601 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:19,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:19,601 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:19,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-03 02:26:20,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:20,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 02:26:20,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:20,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:20,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:20,770 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:20,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2069470626] [2022-11-03 02:26:20,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2069470626] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:20,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:20,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:20,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833591946] [2022-11-03 02:26:20,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:20,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:20,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:20,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:20,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:20,773 INFO L87 Difference]: Start difference. First operand 281 states and 378 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:21,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:21,021 INFO L93 Difference]: Finished difference Result 812 states and 1166 transitions. [2022-11-03 02:26:21,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:26:21,022 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:26:21,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:21,023 INFO L225 Difference]: With dead ends: 812 [2022-11-03 02:26:21,023 INFO L226 Difference]: Without dead ends: 633 [2022-11-03 02:26:21,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 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 02:26:21,024 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 897 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:21,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 1482 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:26:21,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-11-03 02:26:21,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 285. [2022-11-03 02:26:21,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 1.3485915492957747) internal successors, (383), 284 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:21,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 383 transitions. [2022-11-03 02:26:21,030 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 383 transitions. Word has length 182 [2022-11-03 02:26:21,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:21,031 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 383 transitions. [2022-11-03 02:26:21,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:21,031 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 383 transitions. [2022-11-03 02:26:21,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:26:21,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:21,032 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:21,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2022-11-03 02:26:21,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:21,253 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:21,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:21,253 INFO L85 PathProgramCache]: Analyzing trace with hash 667760805, now seen corresponding path program 1 times [2022-11-03 02:26:21,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:21,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145138328] [2022-11-03 02:26:21,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:21,255 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:21,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:21,256 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:21,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-03 02:26:21,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:21,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:26:21,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:22,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:22,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:22,104 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:22,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1145138328] [2022-11-03 02:26:22,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1145138328] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:22,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:22,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:22,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101358112] [2022-11-03 02:26:22,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:22,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:22,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:22,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:22,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:22,106 INFO L87 Difference]: Start difference. First operand 285 states and 383 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:22,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:22,321 INFO L93 Difference]: Finished difference Result 716 states and 1023 transitions. [2022-11-03 02:26:22,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:26:22,321 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:26:22,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:22,323 INFO L225 Difference]: With dead ends: 716 [2022-11-03 02:26:22,323 INFO L226 Difference]: Without dead ends: 537 [2022-11-03 02:26:22,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 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 02:26:22,324 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 712 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:22,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 1334 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:26:22,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-11-03 02:26:22,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 287. [2022-11-03 02:26:22,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.3461538461538463) internal successors, (385), 286 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:22,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 385 transitions. [2022-11-03 02:26:22,328 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 385 transitions. Word has length 182 [2022-11-03 02:26:22,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:22,329 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 385 transitions. [2022-11-03 02:26:22,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:22,329 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 385 transitions. [2022-11-03 02:26:22,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:26:22,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:22,330 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:22,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:22,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:22,545 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:22,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:22,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1893102041, now seen corresponding path program 1 times [2022-11-03 02:26:22,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:22,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1429441648] [2022-11-03 02:26:22,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:22,546 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:22,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:22,547 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:22,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-03 02:26:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:23,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:26:23,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:23,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:23,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:23,497 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:23,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1429441648] [2022-11-03 02:26:23,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1429441648] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:23,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:23,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:23,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97182475] [2022-11-03 02:26:23,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:23,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:23,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:23,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:23,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:23,500 INFO L87 Difference]: Start difference. First operand 287 states and 385 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:23,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:23,738 INFO L93 Difference]: Finished difference Result 820 states and 1176 transitions. [2022-11-03 02:26:23,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:26:23,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:26:23,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:23,739 INFO L225 Difference]: With dead ends: 820 [2022-11-03 02:26:23,740 INFO L226 Difference]: Without dead ends: 641 [2022-11-03 02:26:23,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 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 02:26:23,741 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 900 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 1470 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:23,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 1470 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:26:23,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2022-11-03 02:26:23,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 289. [2022-11-03 02:26:23,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.34375) internal successors, (387), 288 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:23,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 387 transitions. [2022-11-03 02:26:23,747 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 387 transitions. Word has length 182 [2022-11-03 02:26:23,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:23,748 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 387 transitions. [2022-11-03 02:26:23,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:23,748 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 387 transitions. [2022-11-03 02:26:23,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:26:23,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:23,749 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:23,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2022-11-03 02:26:23,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:23,961 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:23,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:23,961 INFO L85 PathProgramCache]: Analyzing trace with hash 490822697, now seen corresponding path program 1 times [2022-11-03 02:26:23,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:23,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1688675449] [2022-11-03 02:26:23,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:23,962 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:23,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:23,963 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:23,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-03 02:26:24,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:24,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-03 02:26:24,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:25,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:25,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:25,056 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:25,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1688675449] [2022-11-03 02:26:25,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1688675449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:25,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:25,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 02:26:25,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648294382] [2022-11-03 02:26:25,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:25,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 02:26:25,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:25,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 02:26:25,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:26:25,058 INFO L87 Difference]: Start difference. First operand 289 states and 387 transitions. Second operand has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:25,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:25,907 INFO L93 Difference]: Finished difference Result 1254 states and 1807 transitions. [2022-11-03 02:26:25,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-03 02:26:25,908 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:26:25,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:25,911 INFO L225 Difference]: With dead ends: 1254 [2022-11-03 02:26:25,911 INFO L226 Difference]: Without dead ends: 1075 [2022-11-03 02:26:25,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=189, Invalid=461, Unknown=0, NotChecked=0, Total=650 [2022-11-03 02:26:25,912 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 2435 mSDsluCounter, 3573 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2435 SdHoareTripleChecker+Valid, 3941 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:25,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2435 Valid, 3941 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:26:25,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2022-11-03 02:26:25,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 339. [2022-11-03 02:26:25,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 1.334319526627219) internal successors, (451), 338 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:25,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 451 transitions. [2022-11-03 02:26:25,925 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 451 transitions. Word has length 182 [2022-11-03 02:26:25,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:25,926 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 451 transitions. [2022-11-03 02:26:25,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:25,926 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 451 transitions. [2022-11-03 02:26:25,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:26:25,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:25,927 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:25,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:26,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:26,147 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:26,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:26,147 INFO L85 PathProgramCache]: Analyzing trace with hash -476527957, now seen corresponding path program 1 times [2022-11-03 02:26:26,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:26,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [775870730] [2022-11-03 02:26:26,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:26,149 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:26,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:26,151 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:26,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-03 02:26:26,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:26,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 02:26:26,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:27,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:27,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:27,326 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:27,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [775870730] [2022-11-03 02:26:27,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [775870730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:27,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:27,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:27,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736496130] [2022-11-03 02:26:27,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:27,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:27,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:27,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:27,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:27,328 INFO L87 Difference]: Start difference. First operand 339 states and 451 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:27,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:27,578 INFO L93 Difference]: Finished difference Result 898 states and 1278 transitions. [2022-11-03 02:26:27,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:26:27,579 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:26:27,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:27,586 INFO L225 Difference]: With dead ends: 898 [2022-11-03 02:26:27,591 INFO L226 Difference]: Without dead ends: 693 [2022-11-03 02:26:27,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 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 02:26:27,592 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 837 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 1445 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:27,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 1445 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:26:27,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2022-11-03 02:26:27,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 345. [2022-11-03 02:26:27,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 1.3313953488372092) internal successors, (458), 344 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:27,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 458 transitions. [2022-11-03 02:26:27,603 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 458 transitions. Word has length 182 [2022-11-03 02:26:27,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:27,603 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 458 transitions. [2022-11-03 02:26:27,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:27,604 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 458 transitions. [2022-11-03 02:26:27,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:26:27,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:27,608 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:27,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:27,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:27,829 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:27,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:27,830 INFO L85 PathProgramCache]: Analyzing trace with hash -969154131, now seen corresponding path program 1 times [2022-11-03 02:26:27,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:27,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1648585517] [2022-11-03 02:26:27,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:27,831 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:27,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:27,833 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:27,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-03 02:26:28,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:28,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 02:26:28,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:28,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:28,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:28,868 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:28,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1648585517] [2022-11-03 02:26:28,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1648585517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:28,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:28,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:26:28,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065543510] [2022-11-03 02:26:28,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:28,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:26:28,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:28,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:26:28,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:26:28,870 INFO L87 Difference]: Start difference. First operand 345 states and 458 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:29,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:29,322 INFO L93 Difference]: Finished difference Result 860 states and 1220 transitions. [2022-11-03 02:26:29,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:26:29,322 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:26:29,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:29,324 INFO L225 Difference]: With dead ends: 860 [2022-11-03 02:26:29,324 INFO L226 Difference]: Without dead ends: 655 [2022-11-03 02:26:29,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:26:29,325 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 976 mSDsluCounter, 1258 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 1607 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:29,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 1607 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:26:29,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2022-11-03 02:26:29,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 347. [2022-11-03 02:26:29,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 1.329479768786127) internal successors, (460), 346 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:29,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 460 transitions. [2022-11-03 02:26:29,334 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 460 transitions. Word has length 182 [2022-11-03 02:26:29,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:29,334 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 460 transitions. [2022-11-03 02:26:29,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:29,335 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 460 transitions. [2022-11-03 02:26:29,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:26:29,336 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:29,336 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:29,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:29,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:29,541 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:29,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:29,541 INFO L85 PathProgramCache]: Analyzing trace with hash 2109659439, now seen corresponding path program 1 times [2022-11-03 02:26:29,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:29,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2082565575] [2022-11-03 02:26:29,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:29,542 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:29,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:29,543 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:29,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-03 02:26:30,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:30,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:26:30,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:30,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:30,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:30,556 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:30,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2082565575] [2022-11-03 02:26:30,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2082565575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:30,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:30,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:30,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804264864] [2022-11-03 02:26:30,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:30,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:30,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:30,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:30,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:30,558 INFO L87 Difference]: Start difference. First operand 347 states and 460 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:30,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:30,806 INFO L93 Difference]: Finished difference Result 958 states and 1365 transitions. [2022-11-03 02:26:30,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:26:30,807 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:26:30,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:30,808 INFO L225 Difference]: With dead ends: 958 [2022-11-03 02:26:30,808 INFO L226 Difference]: Without dead ends: 753 [2022-11-03 02:26:30,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 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 02:26:30,809 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 884 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1463 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:30,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 1463 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:26:30,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-11-03 02:26:30,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 351. [2022-11-03 02:26:30,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 1.3285714285714285) internal successors, (465), 350 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:30,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 465 transitions. [2022-11-03 02:26:30,818 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 465 transitions. Word has length 182 [2022-11-03 02:26:30,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:30,819 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 465 transitions. [2022-11-03 02:26:30,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:30,819 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 465 transitions. [2022-11-03 02:26:30,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:26:30,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:30,820 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:30,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (48)] Ended with exit code 0 [2022-11-03 02:26:31,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:31,041 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:31,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:31,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1692262833, now seen corresponding path program 1 times [2022-11-03 02:26:31,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:31,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [484635132] [2022-11-03 02:26:31,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:31,042 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:31,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:31,043 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:31,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-03 02:26:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:31,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 02:26:31,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:32,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:32,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:32,194 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:32,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [484635132] [2022-11-03 02:26:32,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [484635132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:32,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:32,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:26:32,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441576860] [2022-11-03 02:26:32,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:32,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:26:32,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:32,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:26:32,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:26:32,195 INFO L87 Difference]: Start difference. First operand 351 states and 465 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:32,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:32,521 INFO L93 Difference]: Finished difference Result 907 states and 1288 transitions. [2022-11-03 02:26:32,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:26:32,521 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:26:32,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:32,523 INFO L225 Difference]: With dead ends: 907 [2022-11-03 02:26:32,523 INFO L226 Difference]: Without dead ends: 702 [2022-11-03 02:26:32,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:26:32,524 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 1072 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 1882 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:32,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 1882 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:26:32,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2022-11-03 02:26:32,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 353. [2022-11-03 02:26:32,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 1.3267045454545454) internal successors, (467), 352 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:32,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 467 transitions. [2022-11-03 02:26:32,533 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 467 transitions. Word has length 182 [2022-11-03 02:26:32,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:32,533 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 467 transitions. [2022-11-03 02:26:32,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:32,534 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 467 transitions. [2022-11-03 02:26:32,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:26:32,535 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:32,535 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:32,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:32,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:32,755 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:32,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:32,756 INFO L85 PathProgramCache]: Analyzing trace with hash -641129805, now seen corresponding path program 1 times [2022-11-03 02:26:32,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:32,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1056902586] [2022-11-03 02:26:32,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:32,757 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:32,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:32,758 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:32,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-03 02:26:33,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:33,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 02:26:33,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:33,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:33,779 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:33,780 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:33,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1056902586] [2022-11-03 02:26:33,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1056902586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:33,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:33,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:26:33,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088517700] [2022-11-03 02:26:33,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:33,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:26:33,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:33,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:26:33,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:26:33,782 INFO L87 Difference]: Start difference. First operand 353 states and 467 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:34,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:34,246 INFO L93 Difference]: Finished difference Result 860 states and 1217 transitions. [2022-11-03 02:26:34,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:26:34,247 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:26:34,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:34,249 INFO L225 Difference]: With dead ends: 860 [2022-11-03 02:26:34,249 INFO L226 Difference]: Without dead ends: 655 [2022-11-03 02:26:34,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:26:34,250 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 942 mSDsluCounter, 1214 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:34,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 1575 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:26:34,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2022-11-03 02:26:34,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 357. [2022-11-03 02:26:34,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 1.3258426966292134) internal successors, (472), 356 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:34,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 472 transitions. [2022-11-03 02:26:34,259 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 472 transitions. Word has length 182 [2022-11-03 02:26:34,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:34,260 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 472 transitions. [2022-11-03 02:26:34,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:34,260 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 472 transitions. [2022-11-03 02:26:34,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:26:34,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:34,261 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:34,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (50)] Ended with exit code 0 [2022-11-03 02:26:34,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:34,465 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:34,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:34,465 INFO L85 PathProgramCache]: Analyzing trace with hash 619787445, now seen corresponding path program 1 times [2022-11-03 02:26:34,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:34,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2116806526] [2022-11-03 02:26:34,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:34,467 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:34,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:34,468 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:34,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-03 02:26:35,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:35,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:26:35,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:35,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:35,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:35,250 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:35,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2116806526] [2022-11-03 02:26:35,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2116806526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:35,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:35,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:35,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456057145] [2022-11-03 02:26:35,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:35,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:35,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:35,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:35,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:35,252 INFO L87 Difference]: Start difference. First operand 357 states and 472 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:35,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:35,452 INFO L93 Difference]: Finished difference Result 820 states and 1158 transitions. [2022-11-03 02:26:35,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:26:35,453 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:26:35,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:35,454 INFO L225 Difference]: With dead ends: 820 [2022-11-03 02:26:35,454 INFO L226 Difference]: Without dead ends: 615 [2022-11-03 02:26:35,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 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 02:26:35,455 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 648 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:35,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [648 Valid, 1297 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:26:35,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-11-03 02:26:35,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 359. [2022-11-03 02:26:35,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.324022346368715) internal successors, (474), 358 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:35,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 474 transitions. [2022-11-03 02:26:35,461 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 474 transitions. Word has length 182 [2022-11-03 02:26:35,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:35,461 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 474 transitions. [2022-11-03 02:26:35,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:35,461 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 474 transitions. [2022-11-03 02:26:35,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:26:35,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:35,462 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:35,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:35,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:35,665 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:35,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:35,665 INFO L85 PathProgramCache]: Analyzing trace with hash 2006572855, now seen corresponding path program 1 times [2022-11-03 02:26:35,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:35,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201784089] [2022-11-03 02:26:35,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:35,667 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:35,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:35,668 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:35,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-03 02:26:36,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:36,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:26:36,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:36,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:36,670 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:36,670 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:36,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201784089] [2022-11-03 02:26:36,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201784089] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:36,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:36,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:36,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32529349] [2022-11-03 02:26:36,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:36,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:36,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:36,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:36,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:36,672 INFO L87 Difference]: Start difference. First operand 359 states and 474 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:36,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:36,908 INFO L93 Difference]: Finished difference Result 966 states and 1373 transitions. [2022-11-03 02:26:36,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:26:36,909 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:26:36,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:36,911 INFO L225 Difference]: With dead ends: 966 [2022-11-03 02:26:36,911 INFO L226 Difference]: Without dead ends: 761 [2022-11-03 02:26:36,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 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 02:26:36,912 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 866 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:36,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [866 Valid, 1455 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:26:36,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2022-11-03 02:26:36,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 361. [2022-11-03 02:26:36,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 1.3222222222222222) internal successors, (476), 360 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:36,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 476 transitions. [2022-11-03 02:26:36,917 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 476 transitions. Word has length 182 [2022-11-03 02:26:36,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:36,918 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 476 transitions. [2022-11-03 02:26:36,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:36,918 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 476 transitions. [2022-11-03 02:26:36,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:26:36,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:36,919 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:36,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:37,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:37,139 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:37,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:37,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1844493767, now seen corresponding path program 1 times [2022-11-03 02:26:37,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:37,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1652422453] [2022-11-03 02:26:37,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:37,141 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:37,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:37,142 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:37,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-03 02:26:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:37,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 02:26:37,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:38,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:38,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:38,345 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:38,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1652422453] [2022-11-03 02:26:38,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1652422453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:38,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:38,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:38,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130446935] [2022-11-03 02:26:38,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:38,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:38,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:38,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:38,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:38,347 INFO L87 Difference]: Start difference. First operand 361 states and 476 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:38,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:38,590 INFO L93 Difference]: Finished difference Result 927 states and 1314 transitions. [2022-11-03 02:26:38,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:26:38,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:26:38,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:38,593 INFO L225 Difference]: With dead ends: 927 [2022-11-03 02:26:38,593 INFO L226 Difference]: Without dead ends: 722 [2022-11-03 02:26:38,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 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 02:26:38,594 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 812 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 1433 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:38,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 1433 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:26:38,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2022-11-03 02:26:38,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 363. [2022-11-03 02:26:38,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 1.3204419889502763) internal successors, (478), 362 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:38,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 478 transitions. [2022-11-03 02:26:38,602 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 478 transitions. Word has length 182 [2022-11-03 02:26:38,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:38,603 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 478 transitions. [2022-11-03 02:26:38,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:38,603 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 478 transitions. [2022-11-03 02:26:38,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:26:38,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:38,604 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:38,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:38,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:38,817 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:38,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:38,817 INFO L85 PathProgramCache]: Analyzing trace with hash 421887419, now seen corresponding path program 1 times [2022-11-03 02:26:38,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:38,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1621730712] [2022-11-03 02:26:38,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:38,818 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:38,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:38,819 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:38,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-03 02:26:39,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:39,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:26:39,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:39,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:39,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:39,625 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:39,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1621730712] [2022-11-03 02:26:39,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1621730712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:39,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:39,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:39,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917624194] [2022-11-03 02:26:39,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:39,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:39,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:39,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:39,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:39,627 INFO L87 Difference]: Start difference. First operand 363 states and 478 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:39,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:39,853 INFO L93 Difference]: Finished difference Result 820 states and 1155 transitions. [2022-11-03 02:26:39,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:26:39,854 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:26:39,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:39,855 INFO L225 Difference]: With dead ends: 820 [2022-11-03 02:26:39,855 INFO L226 Difference]: Without dead ends: 615 [2022-11-03 02:26:39,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 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 02:26:39,856 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 627 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 1285 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:39,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 1285 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:26:39,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-11-03 02:26:39,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 365. [2022-11-03 02:26:39,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.3186813186813187) internal successors, (480), 364 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:39,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 480 transitions. [2022-11-03 02:26:39,864 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 480 transitions. Word has length 182 [2022-11-03 02:26:39,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:39,865 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 480 transitions. [2022-11-03 02:26:39,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:39,865 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 480 transitions. [2022-11-03 02:26:39,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:26:39,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:39,866 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:39,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:40,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:40,086 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:40,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:40,086 INFO L85 PathProgramCache]: Analyzing trace with hash 406368701, now seen corresponding path program 1 times [2022-11-03 02:26:40,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:40,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682141096] [2022-11-03 02:26:40,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:40,088 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:40,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:40,090 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:40,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-03 02:26:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:40,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-03 02:26:40,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:41,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:41,154 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:41,155 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:41,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1682141096] [2022-11-03 02:26:41,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1682141096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:41,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:41,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 02:26:41,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864679726] [2022-11-03 02:26:41,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:41,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 02:26:41,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:41,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 02:26:41,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:26:41,156 INFO L87 Difference]: Start difference. First operand 365 states and 480 transitions. Second operand has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:41,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:41,874 INFO L93 Difference]: Finished difference Result 1354 states and 1935 transitions. [2022-11-03 02:26:41,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-03 02:26:41,875 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:26:41,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:41,876 INFO L225 Difference]: With dead ends: 1354 [2022-11-03 02:26:41,876 INFO L226 Difference]: Without dead ends: 1149 [2022-11-03 02:26:41,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=189, Invalid=461, Unknown=0, NotChecked=0, Total=650 [2022-11-03 02:26:41,878 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 2492 mSDsluCounter, 3572 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2492 SdHoareTripleChecker+Valid, 4005 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:41,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2492 Valid, 4005 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:26:41,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2022-11-03 02:26:41,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 413. [2022-11-03 02:26:41,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 1.3155339805825244) internal successors, (542), 412 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:41,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 542 transitions. [2022-11-03 02:26:41,888 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 542 transitions. Word has length 182 [2022-11-03 02:26:41,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:41,889 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 542 transitions. [2022-11-03 02:26:41,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:41,889 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 542 transitions. [2022-11-03 02:26:41,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:26:41,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:41,890 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:41,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:42,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:42,111 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:42,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:42,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1299855039, now seen corresponding path program 1 times [2022-11-03 02:26:42,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:42,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [383104582] [2022-11-03 02:26:42,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:42,113 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:42,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:42,114 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:42,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-03 02:26:42,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:42,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 02:26:42,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:43,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:43,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:43,127 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:43,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [383104582] [2022-11-03 02:26:43,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [383104582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:43,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:43,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 02:26:43,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369147224] [2022-11-03 02:26:43,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:43,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:26:43,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:43,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:26:43,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:26:43,129 INFO L87 Difference]: Start difference. First operand 413 states and 542 transitions. Second operand has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:44,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:44,072 INFO L93 Difference]: Finished difference Result 1606 states and 2292 transitions. [2022-11-03 02:26:44,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-03 02:26:44,073 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:26:44,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:44,075 INFO L225 Difference]: With dead ends: 1606 [2022-11-03 02:26:44,075 INFO L226 Difference]: Without dead ends: 1375 [2022-11-03 02:26:44,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=389, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:26:44,077 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 2760 mSDsluCounter, 2393 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2760 SdHoareTripleChecker+Valid, 2829 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:44,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2760 Valid, 2829 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:26:44,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2022-11-03 02:26:44,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 493. [2022-11-03 02:26:44,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 492 states have (on average 1.3211382113821137) internal successors, (650), 492 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:44,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 650 transitions. [2022-11-03 02:26:44,087 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 650 transitions. Word has length 182 [2022-11-03 02:26:44,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:44,088 INFO L495 AbstractCegarLoop]: Abstraction has 493 states and 650 transitions. [2022-11-03 02:26:44,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:44,088 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 650 transitions. [2022-11-03 02:26:44,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:26:44,089 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:44,089 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:44,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (56)] Ended with exit code 0 [2022-11-03 02:26:44,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:44,293 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:44,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:44,293 INFO L85 PathProgramCache]: Analyzing trace with hash 402461761, now seen corresponding path program 1 times [2022-11-03 02:26:44,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:44,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [305700072] [2022-11-03 02:26:44,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:44,294 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:44,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:44,295 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:44,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-03 02:26:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:44,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 02:26:44,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:45,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:45,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:45,366 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:45,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [305700072] [2022-11-03 02:26:45,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [305700072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:45,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:45,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 02:26:45,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099299222] [2022-11-03 02:26:45,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:45,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:26:45,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:45,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:26:45,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:26:45,369 INFO L87 Difference]: Start difference. First operand 493 states and 650 transitions. Second operand has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:46,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:46,310 INFO L93 Difference]: Finished difference Result 1666 states and 2377 transitions. [2022-11-03 02:26:46,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-03 02:26:46,310 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:26:46,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:46,312 INFO L225 Difference]: With dead ends: 1666 [2022-11-03 02:26:46,313 INFO L226 Difference]: Without dead ends: 1377 [2022-11-03 02:26:46,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=389, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:26:46,314 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 2752 mSDsluCounter, 2411 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2752 SdHoareTripleChecker+Valid, 2854 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:46,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2752 Valid, 2854 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:26:46,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2022-11-03 02:26:46,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 495. [2022-11-03 02:26:46,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 494 states have (on average 1.319838056680162) internal successors, (652), 494 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:46,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 652 transitions. [2022-11-03 02:26:46,325 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 652 transitions. Word has length 182 [2022-11-03 02:26:46,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:46,326 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 652 transitions. [2022-11-03 02:26:46,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:46,326 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 652 transitions. [2022-11-03 02:26:46,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:26:46,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:46,327 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:46,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (57)] Ended with exit code 0 [2022-11-03 02:26:46,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:46,528 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:46,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:46,528 INFO L85 PathProgramCache]: Analyzing trace with hash 826108483, now seen corresponding path program 1 times [2022-11-03 02:26:46,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:46,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1876360071] [2022-11-03 02:26:46,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:46,529 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:46,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:46,530 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:46,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-03 02:26:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:47,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 02:26:47,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:47,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:47,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:47,605 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:47,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1876360071] [2022-11-03 02:26:47,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1876360071] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:47,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:47,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 02:26:47,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840319599] [2022-11-03 02:26:47,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:47,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:26:47,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:47,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:26:47,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:26:47,607 INFO L87 Difference]: Start difference. First operand 495 states and 652 transitions. Second operand has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:48,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:48,624 INFO L93 Difference]: Finished difference Result 1670 states and 2380 transitions. [2022-11-03 02:26:48,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-03 02:26:48,624 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:26:48,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:48,626 INFO L225 Difference]: With dead ends: 1670 [2022-11-03 02:26:48,626 INFO L226 Difference]: Without dead ends: 1379 [2022-11-03 02:26:48,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=389, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:26:48,627 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 2746 mSDsluCounter, 2421 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2746 SdHoareTripleChecker+Valid, 2869 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:48,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2746 Valid, 2869 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 02:26:48,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2022-11-03 02:26:48,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 497. [2022-11-03 02:26:48,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 1.3185483870967742) internal successors, (654), 496 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:48,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 654 transitions. [2022-11-03 02:26:48,641 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 654 transitions. Word has length 182 [2022-11-03 02:26:48,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:48,641 INFO L495 AbstractCegarLoop]: Abstraction has 497 states and 654 transitions. [2022-11-03 02:26:48,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:48,642 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 654 transitions. [2022-11-03 02:26:48,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:26:48,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:48,643 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:48,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:48,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:48,859 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:48,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:48,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1019258683, now seen corresponding path program 1 times [2022-11-03 02:26:48,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:48,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424719961] [2022-11-03 02:26:48,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:48,861 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:48,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:48,862 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:48,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2022-11-03 02:26:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:49,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 02:26:49,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:49,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:49,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:49,951 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:49,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424719961] [2022-11-03 02:26:49,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1424719961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:49,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:49,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 02:26:49,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108679171] [2022-11-03 02:26:49,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:49,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:26:49,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:49,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:26:49,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:26:49,953 INFO L87 Difference]: Start difference. First operand 497 states and 654 transitions. Second operand has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:50,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:50,913 INFO L93 Difference]: Finished difference Result 1674 states and 2383 transitions. [2022-11-03 02:26:50,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-03 02:26:50,913 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:26:50,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:50,915 INFO L225 Difference]: With dead ends: 1674 [2022-11-03 02:26:50,915 INFO L226 Difference]: Without dead ends: 1381 [2022-11-03 02:26:50,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=389, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:26:50,917 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 2740 mSDsluCounter, 2431 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2740 SdHoareTripleChecker+Valid, 2884 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:50,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2740 Valid, 2884 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:26:50,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2022-11-03 02:26:50,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 499. [2022-11-03 02:26:50,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 498 states have (on average 1.3172690763052208) internal successors, (656), 498 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:50,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 656 transitions. [2022-11-03 02:26:50,929 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 656 transitions. Word has length 182 [2022-11-03 02:26:50,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:50,930 INFO L495 AbstractCegarLoop]: Abstraction has 499 states and 656 transitions. [2022-11-03 02:26:50,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:50,930 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 656 transitions. [2022-11-03 02:26:50,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:26:50,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:50,931 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:50,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (59)] Ended with exit code 0 [2022-11-03 02:26:51,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:51,132 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:51,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:51,132 INFO L85 PathProgramCache]: Analyzing trace with hash -359727161, now seen corresponding path program 1 times [2022-11-03 02:26:51,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:51,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1955901976] [2022-11-03 02:26:51,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:51,133 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:51,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:51,134 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:51,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2022-11-03 02:26:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:51,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 02:26:51,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:52,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:52,253 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:52,253 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:52,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1955901976] [2022-11-03 02:26:52,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1955901976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:52,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:52,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 02:26:52,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996285564] [2022-11-03 02:26:52,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:52,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:26:52,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:52,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:26:52,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:26:52,256 INFO L87 Difference]: Start difference. First operand 499 states and 656 transitions. Second operand has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:53,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:53,239 INFO L93 Difference]: Finished difference Result 1678 states and 2386 transitions. [2022-11-03 02:26:53,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-03 02:26:53,239 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:26:53,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:53,241 INFO L225 Difference]: With dead ends: 1678 [2022-11-03 02:26:53,241 INFO L226 Difference]: Without dead ends: 1383 [2022-11-03 02:26:53,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=389, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:26:53,242 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 2734 mSDsluCounter, 2441 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2734 SdHoareTripleChecker+Valid, 2899 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:53,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2734 Valid, 2899 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:26:53,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2022-11-03 02:26:53,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 501. [2022-11-03 02:26:53,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 500 states have (on average 1.316) internal successors, (658), 500 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:53,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 658 transitions. [2022-11-03 02:26:53,250 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 658 transitions. Word has length 182 [2022-11-03 02:26:53,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:53,250 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 658 transitions. [2022-11-03 02:26:53,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:53,250 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 658 transitions. [2022-11-03 02:26:53,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:26:53,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:53,251 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:53,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:53,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:53,457 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:53,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:53,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1203732663, now seen corresponding path program 1 times [2022-11-03 02:26:53,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:53,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2036193342] [2022-11-03 02:26:53,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:53,459 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:53,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:53,460 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:53,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2022-11-03 02:26:54,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:54,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 02:26:54,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:54,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:54,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:54,587 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:54,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2036193342] [2022-11-03 02:26:54,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2036193342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:54,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:54,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 02:26:54,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943632609] [2022-11-03 02:26:54,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:54,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 02:26:54,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:54,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 02:26:54,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:26:54,589 INFO L87 Difference]: Start difference. First operand 501 states and 658 transitions. Second operand has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:55,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:55,765 INFO L93 Difference]: Finished difference Result 1818 states and 2591 transitions. [2022-11-03 02:26:55,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-03 02:26:55,765 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:26:55,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:55,766 INFO L225 Difference]: With dead ends: 1818 [2022-11-03 02:26:55,766 INFO L226 Difference]: Without dead ends: 1521 [2022-11-03 02:26:55,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2022-11-03 02:26:55,767 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 3024 mSDsluCounter, 3124 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3024 SdHoareTripleChecker+Valid, 3593 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:55,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3024 Valid, 3593 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 02:26:55,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1521 states. [2022-11-03 02:26:55,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1521 to 505. [2022-11-03 02:26:55,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 504 states have (on average 1.3154761904761905) internal successors, (663), 504 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:55,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 663 transitions. [2022-11-03 02:26:55,781 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 663 transitions. Word has length 182 [2022-11-03 02:26:55,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:55,781 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 663 transitions. [2022-11-03 02:26:55,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:55,781 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 663 transitions. [2022-11-03 02:26:55,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:26:55,782 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:55,783 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:55,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:55,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:55,985 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:55,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:55,985 INFO L85 PathProgramCache]: Analyzing trace with hash -502132789, now seen corresponding path program 1 times [2022-11-03 02:26:55,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:55,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [567971676] [2022-11-03 02:26:55,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:55,986 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:55,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:55,988 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:55,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2022-11-03 02:26:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:56,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 02:26:56,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:57,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:57,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:57,098 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:57,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [567971676] [2022-11-03 02:26:57,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [567971676] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:57,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:57,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 02:26:57,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284905925] [2022-11-03 02:26:57,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:57,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 02:26:57,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:57,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 02:26:57,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:26:57,100 INFO L87 Difference]: Start difference. First operand 505 states and 663 transitions. Second operand has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:58,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:58,242 INFO L93 Difference]: Finished difference Result 1830 states and 2605 transitions. [2022-11-03 02:26:58,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-03 02:26:58,243 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:26:58,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:58,245 INFO L225 Difference]: With dead ends: 1830 [2022-11-03 02:26:58,245 INFO L226 Difference]: Without dead ends: 1529 [2022-11-03 02:26:58,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2022-11-03 02:26:58,247 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 3021 mSDsluCounter, 3137 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3021 SdHoareTripleChecker+Valid, 3611 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:58,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3021 Valid, 3611 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 02:26:58,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2022-11-03 02:26:58,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 507. [2022-11-03 02:26:58,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 506 states have (on average 1.3142292490118577) internal successors, (665), 506 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:58,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 665 transitions. [2022-11-03 02:26:58,261 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 665 transitions. Word has length 182 [2022-11-03 02:26:58,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:58,261 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 665 transitions. [2022-11-03 02:26:58,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:58,262 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 665 transitions. [2022-11-03 02:26:58,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:26:58,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:58,263 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:58,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:58,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:58,477 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:58,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:58,477 INFO L85 PathProgramCache]: Analyzing trace with hash 884070605, now seen corresponding path program 1 times [2022-11-03 02:26:58,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:58,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [68500306] [2022-11-03 02:26:58,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:58,479 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:58,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:58,480 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:58,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2022-11-03 02:26:59,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:59,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 02:26:59,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:59,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:59,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:59,610 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:59,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [68500306] [2022-11-03 02:26:59,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [68500306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:59,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:59,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 02:26:59,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799612312] [2022-11-03 02:26:59,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:59,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 02:26:59,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:59,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 02:26:59,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:26:59,611 INFO L87 Difference]: Start difference. First operand 507 states and 665 transitions. Second operand has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:27:00,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:00,784 INFO L93 Difference]: Finished difference Result 1840 states and 2616 transitions. [2022-11-03 02:27:00,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-03 02:27:00,784 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:27:00,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:00,786 INFO L225 Difference]: With dead ends: 1840 [2022-11-03 02:27:00,786 INFO L226 Difference]: Without dead ends: 1537 [2022-11-03 02:27:00,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2022-11-03 02:27:00,787 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 3018 mSDsluCounter, 3150 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3018 SdHoareTripleChecker+Valid, 3629 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:00,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3018 Valid, 3629 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 02:27:00,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2022-11-03 02:27:00,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 509. [2022-11-03 02:27:00,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 508 states have (on average 1.312992125984252) internal successors, (667), 508 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:27:00,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 667 transitions. [2022-11-03 02:27:00,800 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 667 transitions. Word has length 182 [2022-11-03 02:27:00,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:00,801 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 667 transitions. [2022-11-03 02:27:00,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:27:00,801 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 667 transitions. [2022-11-03 02:27:00,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:27:00,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:00,802 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:00,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (63)] Ended with exit code 0 [2022-11-03 02:27:01,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:27:01,023 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:01,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:01,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1487668657, now seen corresponding path program 1 times [2022-11-03 02:27:01,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:27:01,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [686084542] [2022-11-03 02:27:01,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:01,026 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:27:01,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:27:01,027 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:27:01,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2022-11-03 02:27:01,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:01,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 02:27:01,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:02,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:02,385 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:27:02,385 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:27:02,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [686084542] [2022-11-03 02:27:02,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [686084542] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:02,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:02,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 02:27:02,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935265326] [2022-11-03 02:27:02,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:02,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 02:27:02,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:27:02,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 02:27:02,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:27:02,387 INFO L87 Difference]: Start difference. First operand 509 states and 667 transitions. Second operand has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:27:03,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:03,551 INFO L93 Difference]: Finished difference Result 1850 states and 2627 transitions. [2022-11-03 02:27:03,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-03 02:27:03,552 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:27:03,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:03,554 INFO L225 Difference]: With dead ends: 1850 [2022-11-03 02:27:03,554 INFO L226 Difference]: Without dead ends: 1545 [2022-11-03 02:27:03,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2022-11-03 02:27:03,555 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 3015 mSDsluCounter, 3163 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3015 SdHoareTripleChecker+Valid, 3647 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:03,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3015 Valid, 3647 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 02:27:03,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1545 states. [2022-11-03 02:27:03,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1545 to 511. [2022-11-03 02:27:03,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 510 states have (on average 1.311764705882353) internal successors, (669), 510 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:27:03,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 669 transitions. [2022-11-03 02:27:03,570 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 669 transitions. Word has length 182 [2022-11-03 02:27:03,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:03,570 INFO L495 AbstractCegarLoop]: Abstraction has 511 states and 669 transitions. [2022-11-03 02:27:03,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:27:03,570 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 669 transitions. [2022-11-03 02:27:03,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:27:03,571 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:03,572 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:03,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2022-11-03 02:27:03,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:27:03,785 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:03,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:03,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1347120047, now seen corresponding path program 1 times [2022-11-03 02:27:03,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:27:03,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [53751659] [2022-11-03 02:27:03,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:03,786 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:27:03,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:27:03,787 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:27:03,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2022-11-03 02:27:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:04,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 02:27:04,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:04,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:04,908 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:27:04,909 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:27:04,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [53751659] [2022-11-03 02:27:04,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [53751659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:04,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:04,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 02:27:04,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028167844] [2022-11-03 02:27:04,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:04,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:27:04,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:27:04,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:27:04,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:27:04,911 INFO L87 Difference]: Start difference. First operand 511 states and 669 transitions. Second operand has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:27:05,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:05,903 INFO L93 Difference]: Finished difference Result 1702 states and 2407 transitions. [2022-11-03 02:27:05,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-03 02:27:05,903 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:27:05,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:05,906 INFO L225 Difference]: With dead ends: 1702 [2022-11-03 02:27:05,906 INFO L226 Difference]: Without dead ends: 1395 [2022-11-03 02:27:05,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=389, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:27:05,907 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 2702 mSDsluCounter, 2503 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2702 SdHoareTripleChecker+Valid, 2992 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:05,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2702 Valid, 2992 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 02:27:05,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2022-11-03 02:27:05,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 513. [2022-11-03 02:27:05,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 512 states have (on average 1.310546875) internal successors, (671), 512 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:27:05,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 671 transitions. [2022-11-03 02:27:05,920 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 671 transitions. Word has length 182 [2022-11-03 02:27:05,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:05,921 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 671 transitions. [2022-11-03 02:27:05,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:27:05,921 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 671 transitions. [2022-11-03 02:27:05,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:27:05,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:05,922 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:05,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2022-11-03 02:27:06,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:27:06,137 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:06,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:06,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1142408915, now seen corresponding path program 1 times [2022-11-03 02:27:06,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:27:06,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [518960613] [2022-11-03 02:27:06,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:06,139 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:27:06,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:27:06,147 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:27:06,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2022-11-03 02:27:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:06,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 02:27:06,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:07,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:07,308 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:27:07,308 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:27:07,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [518960613] [2022-11-03 02:27:07,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [518960613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:07,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:07,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 02:27:07,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670472519] [2022-11-03 02:27:07,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:07,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 02:27:07,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:27:07,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 02:27:07,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:27:07,310 INFO L87 Difference]: Start difference. First operand 513 states and 671 transitions. Second operand has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:27:08,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:08,545 INFO L93 Difference]: Finished difference Result 1840 states and 2609 transitions. [2022-11-03 02:27:08,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-03 02:27:08,545 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:27:08,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:08,547 INFO L225 Difference]: With dead ends: 1840 [2022-11-03 02:27:08,547 INFO L226 Difference]: Without dead ends: 1531 [2022-11-03 02:27:08,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2022-11-03 02:27:08,549 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 2989 mSDsluCounter, 3184 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2989 SdHoareTripleChecker+Valid, 3678 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:08,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2989 Valid, 3678 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 02:27:08,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2022-11-03 02:27:08,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 515. [2022-11-03 02:27:08,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 514 states have (on average 1.3093385214007782) internal successors, (673), 514 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:27:08,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 673 transitions. [2022-11-03 02:27:08,562 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 673 transitions. Word has length 182 [2022-11-03 02:27:08,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:08,562 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 673 transitions. [2022-11-03 02:27:08,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:27:08,563 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 673 transitions. [2022-11-03 02:27:08,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:27:08,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:08,564 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:08,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (66)] Ended with exit code 0 [2022-11-03 02:27:08,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:27:08,777 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:08,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:08,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1565110741, now seen corresponding path program 1 times [2022-11-03 02:27:08,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:27:08,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1592669137] [2022-11-03 02:27:08,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:08,778 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:27:08,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:27:08,779 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:27:08,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2022-11-03 02:27:09,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:09,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 02:27:09,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:09,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:09,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:27:09,948 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:27:09,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1592669137] [2022-11-03 02:27:09,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1592669137] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:09,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:09,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 02:27:09,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933940644] [2022-11-03 02:27:09,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:09,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 02:27:09,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:27:09,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 02:27:09,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:27:09,950 INFO L87 Difference]: Start difference. First operand 515 states and 673 transitions. Second operand has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:27:11,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:11,162 INFO L93 Difference]: Finished difference Result 1850 states and 2620 transitions. [2022-11-03 02:27:11,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-03 02:27:11,162 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:27:11,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:11,165 INFO L225 Difference]: With dead ends: 1850 [2022-11-03 02:27:11,165 INFO L226 Difference]: Without dead ends: 1539 [2022-11-03 02:27:11,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2022-11-03 02:27:11,166 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 2986 mSDsluCounter, 3197 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2986 SdHoareTripleChecker+Valid, 3696 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:11,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2986 Valid, 3696 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 02:27:11,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1539 states. [2022-11-03 02:27:11,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1539 to 517. [2022-11-03 02:27:11,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 516 states have (on average 1.308139534883721) internal successors, (675), 516 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 02:27:11,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 675 transitions. [2022-11-03 02:27:11,191 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 675 transitions. Word has length 182 [2022-11-03 02:27:11,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:11,191 INFO L495 AbstractCegarLoop]: Abstraction has 517 states and 675 transitions. [2022-11-03 02:27:11,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:27:11,192 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 675 transitions. [2022-11-03 02:27:11,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:27:11,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:11,193 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:11,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2022-11-03 02:27:11,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:27:11,413 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:11,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:11,414 INFO L85 PathProgramCache]: Analyzing trace with hash -123833001, now seen corresponding path program 1 times [2022-11-03 02:27:11,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:27:11,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661007754] [2022-11-03 02:27:11,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:11,415 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:27:11,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:27:11,416 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:27:11,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2022-11-03 02:27:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:12,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 02:27:12,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:12,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:12,565 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:27:12,565 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:27:12,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661007754] [2022-11-03 02:27:12,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1661007754] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:12,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:12,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 02:27:12,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068307420] [2022-11-03 02:27:12,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:12,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 02:27:12,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:27:12,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 02:27:12,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:27:12,567 INFO L87 Difference]: Start difference. First operand 517 states and 675 transitions. Second operand has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:27:13,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:13,947 INFO L93 Difference]: Finished difference Result 1860 states and 2631 transitions. [2022-11-03 02:27:13,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-03 02:27:13,947 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:27:13,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:13,949 INFO L225 Difference]: With dead ends: 1860 [2022-11-03 02:27:13,949 INFO L226 Difference]: Without dead ends: 1547 [2022-11-03 02:27:13,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2022-11-03 02:27:13,950 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 2983 mSDsluCounter, 3210 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2983 SdHoareTripleChecker+Valid, 3714 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:13,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2983 Valid, 3714 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 02:27:13,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2022-11-03 02:27:13,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 519. [2022-11-03 02:27:13,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 518 states have (on average 1.306949806949807) internal successors, (677), 518 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:27:13,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 677 transitions. [2022-11-03 02:27:13,962 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 677 transitions. Word has length 182 [2022-11-03 02:27:13,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:13,962 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 677 transitions. [2022-11-03 02:27:13,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:27:13,963 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 677 transitions. [2022-11-03 02:27:13,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:27:13,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:13,964 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:13,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (68)] Ended with exit code 0 [2022-11-03 02:27:14,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:27:14,174 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:14,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:14,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1712180903, now seen corresponding path program 1 times [2022-11-03 02:27:14,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:27:14,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432013593] [2022-11-03 02:27:14,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:14,176 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:27:14,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:27:14,177 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:27:14,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2022-11-03 02:27:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:14,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 02:27:14,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:15,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:15,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:27:15,371 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:27:15,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [432013593] [2022-11-03 02:27:15,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [432013593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:15,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:15,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 02:27:15,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350621681] [2022-11-03 02:27:15,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:15,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:27:15,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:27:15,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:27:15,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:27:15,373 INFO L87 Difference]: Start difference. First operand 519 states and 677 transitions. Second operand has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:27:16,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:16,396 INFO L93 Difference]: Finished difference Result 1720 states and 2422 transitions. [2022-11-03 02:27:16,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-03 02:27:16,396 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:27:16,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:16,398 INFO L225 Difference]: With dead ends: 1720 [2022-11-03 02:27:16,398 INFO L226 Difference]: Without dead ends: 1405 [2022-11-03 02:27:16,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=389, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:27:16,399 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 2676 mSDsluCounter, 2555 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2676 SdHoareTripleChecker+Valid, 3070 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:16,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2676 Valid, 3070 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 02:27:16,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2022-11-03 02:27:16,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 523. [2022-11-03 02:27:16,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 522 states have (on average 1.3065134099616857) internal successors, (682), 522 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:27:16,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 682 transitions. [2022-11-03 02:27:16,408 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 682 transitions. Word has length 182 [2022-11-03 02:27:16,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:16,408 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 682 transitions. [2022-11-03 02:27:16,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:27:16,408 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 682 transitions. [2022-11-03 02:27:16,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:27:16,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:16,410 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:16,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2022-11-03 02:27:16,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:27:16,610 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:16,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:16,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1995980379, now seen corresponding path program 1 times [2022-11-03 02:27:16,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:27:16,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [148818657] [2022-11-03 02:27:16,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:16,613 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:27:16,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:27:16,613 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:27:16,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2022-11-03 02:27:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:17,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 02:27:17,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:17,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:17,778 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:27:17,778 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:27:17,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [148818657] [2022-11-03 02:27:17,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [148818657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:17,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:17,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 02:27:17,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002752036] [2022-11-03 02:27:17,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:17,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 02:27:17,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:27:17,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 02:27:17,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:27:17,779 INFO L87 Difference]: Start difference. First operand 523 states and 682 transitions. Second operand has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:27:18,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:18,992 INFO L93 Difference]: Finished difference Result 1860 states and 2627 transitions. [2022-11-03 02:27:18,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-03 02:27:18,993 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:27:18,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:18,994 INFO L225 Difference]: With dead ends: 1860 [2022-11-03 02:27:18,994 INFO L226 Difference]: Without dead ends: 1541 [2022-11-03 02:27:18,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2022-11-03 02:27:18,995 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 2959 mSDsluCounter, 3246 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2959 SdHoareTripleChecker+Valid, 3766 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:18,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2959 Valid, 3766 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 02:27:18,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2022-11-03 02:27:19,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 525. [2022-11-03 02:27:19,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 524 states have (on average 1.3053435114503817) internal successors, (684), 524 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:27:19,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 684 transitions. [2022-11-03 02:27:19,005 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 684 transitions. Word has length 182 [2022-11-03 02:27:19,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:19,005 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 684 transitions. [2022-11-03 02:27:19,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:27:19,005 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 684 transitions. [2022-11-03 02:27:19,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:27:19,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:19,006 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:19,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (70)] Ended with exit code 0 [2022-11-03 02:27:19,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:27:19,207 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:19,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:19,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1597922339, now seen corresponding path program 1 times [2022-11-03 02:27:19,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:27:19,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1613698189] [2022-11-03 02:27:19,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:19,208 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:27:19,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:27:19,209 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:27:19,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2022-11-03 02:27:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:19,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 02:27:19,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:20,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:20,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:27:20,383 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:27:20,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1613698189] [2022-11-03 02:27:20,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1613698189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:20,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:20,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 02:27:20,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607458896] [2022-11-03 02:27:20,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:20,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 02:27:20,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:27:20,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 02:27:20,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:27:20,385 INFO L87 Difference]: Start difference. First operand 525 states and 684 transitions. Second operand has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:27:21,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:21,620 INFO L93 Difference]: Finished difference Result 1870 states and 2638 transitions. [2022-11-03 02:27:21,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-03 02:27:21,620 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:27:21,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:21,622 INFO L225 Difference]: With dead ends: 1870 [2022-11-03 02:27:21,622 INFO L226 Difference]: Without dead ends: 1549 [2022-11-03 02:27:21,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2022-11-03 02:27:21,623 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 2956 mSDsluCounter, 3259 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2956 SdHoareTripleChecker+Valid, 3784 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:21,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2956 Valid, 3784 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 02:27:21,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1549 states. [2022-11-03 02:27:21,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1549 to 527. [2022-11-03 02:27:21,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 526 states have (on average 1.3041825095057034) internal successors, (686), 526 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 02:27:21,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 686 transitions. [2022-11-03 02:27:21,633 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 686 transitions. Word has length 182 [2022-11-03 02:27:21,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:21,634 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 686 transitions. [2022-11-03 02:27:21,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:27:21,634 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 686 transitions. [2022-11-03 02:27:21,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:27:21,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:21,635 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:21,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (71)] Ended with exit code 0 [2022-11-03 02:27:21,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:27:21,835 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:21,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:21,836 INFO L85 PathProgramCache]: Analyzing trace with hash -917863969, now seen corresponding path program 1 times [2022-11-03 02:27:21,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:27:21,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [967213540] [2022-11-03 02:27:21,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:21,837 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:27:21,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:27:21,838 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:27:21,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2022-11-03 02:27:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:22,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 02:27:22,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:23,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:23,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:27:23,045 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:27:23,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [967213540] [2022-11-03 02:27:23,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [967213540] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:23,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:23,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 02:27:23,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067321999] [2022-11-03 02:27:23,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:23,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 02:27:23,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:27:23,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 02:27:23,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:27:23,046 INFO L87 Difference]: Start difference. First operand 527 states and 686 transitions. Second operand has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:27:24,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:24,306 INFO L93 Difference]: Finished difference Result 1880 states and 2649 transitions. [2022-11-03 02:27:24,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-03 02:27:24,307 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:27:24,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:24,308 INFO L225 Difference]: With dead ends: 1880 [2022-11-03 02:27:24,308 INFO L226 Difference]: Without dead ends: 1557 [2022-11-03 02:27:24,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2022-11-03 02:27:24,308 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 2953 mSDsluCounter, 3272 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2953 SdHoareTripleChecker+Valid, 3802 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:24,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2953 Valid, 3802 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 02:27:24,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1557 states. [2022-11-03 02:27:24,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1557 to 529. [2022-11-03 02:27:24,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 528 states have (on average 1.303030303030303) internal successors, (688), 528 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:27:24,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 688 transitions. [2022-11-03 02:27:24,317 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 688 transitions. Word has length 182 [2022-11-03 02:27:24,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:24,317 INFO L495 AbstractCegarLoop]: Abstraction has 529 states and 688 transitions. [2022-11-03 02:27:24,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:27:24,318 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 688 transitions. [2022-11-03 02:27:24,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:27:24,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:24,319 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:24,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (72)] Forceful destruction successful, exit code 0 [2022-11-03 02:27:24,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:27:24,539 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:24,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:24,539 INFO L85 PathProgramCache]: Analyzing trace with hash 857143393, now seen corresponding path program 1 times [2022-11-03 02:27:24,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:27:24,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1913599981] [2022-11-03 02:27:24,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:24,541 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:27:24,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:27:24,542 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:27:24,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2022-11-03 02:27:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:25,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 02:27:25,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:25,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:25,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:27:25,774 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:27:25,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1913599981] [2022-11-03 02:27:25,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1913599981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:25,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:25,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 02:27:25,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587075319] [2022-11-03 02:27:25,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:25,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 02:27:25,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:27:25,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 02:27:25,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:27:25,776 INFO L87 Difference]: Start difference. First operand 529 states and 688 transitions. Second operand has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:27:27,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:27,013 INFO L93 Difference]: Finished difference Result 1890 states and 2660 transitions. [2022-11-03 02:27:27,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-03 02:27:27,013 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-03 02:27:27,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:27,015 INFO L225 Difference]: With dead ends: 1890 [2022-11-03 02:27:27,015 INFO L226 Difference]: Without dead ends: 1565 [2022-11-03 02:27:27,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2022-11-03 02:27:27,016 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 2950 mSDsluCounter, 3285 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2950 SdHoareTripleChecker+Valid, 3820 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:27,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2950 Valid, 3820 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 02:27:27,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2022-11-03 02:27:27,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 531. [2022-11-03 02:27:27,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 530 states have (on average 1.3018867924528301) internal successors, (690), 530 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:27:27,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 690 transitions. [2022-11-03 02:27:27,025 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 690 transitions. Word has length 182 [2022-11-03 02:27:27,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:27,025 INFO L495 AbstractCegarLoop]: Abstraction has 531 states and 690 transitions. [2022-11-03 02:27:27,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:27:27,025 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 690 transitions. [2022-11-03 02:27:27,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:27:27,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:27,026 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:27,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2022-11-03 02:27:27,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:27:27,229 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:27,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:27,229 INFO L85 PathProgramCache]: Analyzing trace with hash 858990435, now seen corresponding path program 1 times [2022-11-03 02:27:27,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:27:27,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [734687499] [2022-11-03 02:27:27,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:27,230 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:27:27,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:27:27,231 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:27:27,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2022-11-03 02:27:27,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:27,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-03 02:27:27,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:30,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:30,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:27:35,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:35,483 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:27:35,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [734687499] [2022-11-03 02:27:35,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [734687499] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:27:35,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1169980109] [2022-11-03 02:27:35,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:35,484 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:27:35,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:27:35,492 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:27:35,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (75)] Waiting until timeout for monitored process [2022-11-03 02:27:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:36,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-03 02:27:36,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:39,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:39,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:27:43,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:43,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1169980109] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:27:43,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117245911] [2022-11-03 02:27:43,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:43,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:27:43,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:27:43,584 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:27:43,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c9cc8e-f8b1-4b1a-bc80-ae0d687d73eb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-11-03 02:27:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:44,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 180 conjunts are in the unsatisfiable core [2022-11-03 02:27:44,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:47,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:27:47,479 INFO L328 TraceCheckSpWp]: Computing backward predicates...