./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal19.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/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_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal19.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/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_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/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 d253dfb68b4173df7f6947bc33b1784f9ee6b90b67f91e05e82d61a0f1e333ac --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:44:57,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:44:57,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:44:57,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:44:57,202 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:44:57,203 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:44:57,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:44:57,207 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:44:57,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:44:57,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:44:57,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:44:57,211 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:44:57,212 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:44:57,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:44:57,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:44:57,215 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:44:57,216 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:44:57,217 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:44:57,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:44:57,221 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:44:57,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:44:57,230 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:44:57,231 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:44:57,232 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:44:57,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:44:57,244 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:44:57,245 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:44:57,246 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:44:57,246 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:44:57,247 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:44:57,248 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:44:57,248 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:44:57,249 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:44:57,250 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:44:57,251 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:44:57,253 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:44:57,254 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:44:57,255 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:44:57,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:44:57,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:44:57,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:44:57,259 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:44:57,293 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:44:57,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:44:57,299 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:44:57,299 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:44:57,300 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:44:57,300 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:44:57,301 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:44:57,301 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:44:57,301 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:44:57,301 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:44:57,301 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:44:57,301 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:44:57,301 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:44:57,302 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:44:57,302 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:44:57,302 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:44:57,302 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:44:57,302 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:44:57,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:44:57,303 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:44:57,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:44:57,304 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:44:57,304 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:44:57,304 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:44:57,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:44:57,305 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:44:57,305 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:44:57,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:44:57,305 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:44:57,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:44:57,306 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:44:57,306 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:44:57,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:44:57,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:44:57,306 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:44:57,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:44:57,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:44:57,307 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:44:57,307 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_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d253dfb68b4173df7f6947bc33b1784f9ee6b90b67f91e05e82d61a0f1e333ac [2022-11-03 03:44:57,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:44:57,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:44:57,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:44:57,597 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:44:57,598 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:44:57,599 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal19.c [2022-11-03 03:44:57,675 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/data/35ff9a773/6d1055d8d83445c1a9c0a7d3bfe575a2/FLAGf66f2c787 [2022-11-03 03:44:58,332 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:44:58,333 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal19.c [2022-11-03 03:44:58,367 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/data/35ff9a773/6d1055d8d83445c1a9c0a7d3bfe575a2/FLAGf66f2c787 [2022-11-03 03:44:58,599 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/data/35ff9a773/6d1055d8d83445c1a9c0a7d3bfe575a2 [2022-11-03 03:44:58,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:44:58,604 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:44:58,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:44:58,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:44:58,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:44:58,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:44:58" (1/1) ... [2022-11-03 03:44:58,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@111c33c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:58, skipping insertion in model container [2022-11-03 03:44:58,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:44:58" (1/1) ... [2022-11-03 03:44:58,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:44:58,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:44:58,899 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_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal19.c[1107,1120] [2022-11-03 03:44:59,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:44:59,247 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:44:59,258 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_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal19.c[1107,1120] [2022-11-03 03:44:59,485 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:44:59,498 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:44:59,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:59 WrapperNode [2022-11-03 03:44:59,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:44:59,500 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:44:59,500 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:44:59,500 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:44:59,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:59" (1/1) ... [2022-11-03 03:44:59,550 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:59" (1/1) ... [2022-11-03 03:44:59,742 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1810 [2022-11-03 03:44:59,743 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:44:59,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:44:59,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:44:59,745 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:44:59,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:59" (1/1) ... [2022-11-03 03:44:59,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:59" (1/1) ... [2022-11-03 03:44:59,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:59" (1/1) ... [2022-11-03 03:44:59,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:59" (1/1) ... [2022-11-03 03:44:59,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:59" (1/1) ... [2022-11-03 03:44:59,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:59" (1/1) ... [2022-11-03 03:44:59,892 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:59" (1/1) ... [2022-11-03 03:44:59,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:59" (1/1) ... [2022-11-03 03:44:59,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:44:59,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:44:59,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:44:59,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:44:59,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:59" (1/1) ... [2022-11-03 03:45:00,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:45:00,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:45:00,028 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:45:00,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:45:00,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:45:00,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:45:00,528 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:45:00,529 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:45:05,907 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:45:11,597 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:45:11,597 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 03:45:11,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:45:11 BoogieIcfgContainer [2022-11-03 03:45:11,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:45:11,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:45:11,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:45:11,607 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:45:11,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:44:58" (1/3) ... [2022-11-03 03:45:11,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446eb604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:45:11, skipping insertion in model container [2022-11-03 03:45:11,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:59" (2/3) ... [2022-11-03 03:45:11,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446eb604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:45:11, skipping insertion in model container [2022-11-03 03:45:11,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:45:11" (3/3) ... [2022-11-03 03:45:11,610 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal19.c [2022-11-03 03:45:11,630 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:45:11,630 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:45:11,686 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:45:11,693 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;@6658a562, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:45:11,694 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:45:11,698 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:45:11,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 03:45:11,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:11,705 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 03:45:11,705 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:45:11,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:11,711 INFO L85 PathProgramCache]: Analyzing trace with hash 23457583, now seen corresponding path program 1 times [2022-11-03 03:45:11,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:45:11,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341741295] [2022-11-03 03:45:11,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:11,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:45:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 03:45:46,943 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 03:46:14,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 03:46:14,089 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 03:46:14,091 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 03:46:14,092 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 03:46:14,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:46:14,099 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-03 03:46:14,103 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 03:46:14,152 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 03:46:14,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:46:14 BoogieIcfgContainer [2022-11-03 03:46:14,207 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 03:46:14,208 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 03:46:14,210 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 03:46:14,210 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 03:46:14,211 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:45:11" (3/4) ... [2022-11-03 03:46:14,215 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 03:46:14,215 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 03:46:14,217 INFO L158 Benchmark]: Toolchain (without parser) took 75612.31ms. Allocated memory was 140.5MB in the beginning and 4.1GB in the end (delta: 4.0GB). Free memory was 102.6MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. [2022-11-03 03:46:14,218 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 140.5MB. Free memory is still 121.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:46:14,219 INFO L158 Benchmark]: CACSL2BoogieTranslator took 893.70ms. Allocated memory is still 140.5MB. Free memory was 102.5MB in the beginning and 77.5MB in the end (delta: 25.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-03 03:46:14,220 INFO L158 Benchmark]: Boogie Procedure Inliner took 242.78ms. Allocated memory is still 140.5MB. Free memory was 77.4MB in the beginning and 96.2MB in the end (delta: -18.8MB). Peak memory consumption was 37.2MB. Max. memory is 16.1GB. [2022-11-03 03:46:14,221 INFO L158 Benchmark]: Boogie Preprocessor took 250.23ms. Allocated memory is still 140.5MB. Free memory was 96.2MB in the beginning and 91.8MB in the end (delta: 4.4MB). Peak memory consumption was 27.6MB. Max. memory is 16.1GB. [2022-11-03 03:46:14,226 INFO L158 Benchmark]: RCFGBuilder took 11605.62ms. Allocated memory was 140.5MB in the beginning and 1.0GB in the end (delta: 885.0MB). Free memory was 91.8MB in the beginning and 610.2MB in the end (delta: -518.3MB). Peak memory consumption was 633.5MB. Max. memory is 16.1GB. [2022-11-03 03:46:14,228 INFO L158 Benchmark]: TraceAbstraction took 62604.85ms. Allocated memory was 1.0GB in the beginning and 4.1GB in the end (delta: 3.1GB). Free memory was 609.1MB in the beginning and 2.0GB in the end (delta: -1.4GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. [2022-11-03 03:46:14,229 INFO L158 Benchmark]: Witness Printer took 7.47ms. Allocated memory is still 4.1GB. Free memory is still 2.0GB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:46:14,233 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 140.5MB. Free memory is still 121.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 893.70ms. Allocated memory is still 140.5MB. Free memory was 102.5MB in the beginning and 77.5MB in the end (delta: 25.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 242.78ms. Allocated memory is still 140.5MB. Free memory was 77.4MB in the beginning and 96.2MB in the end (delta: -18.8MB). Peak memory consumption was 37.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 250.23ms. Allocated memory is still 140.5MB. Free memory was 96.2MB in the beginning and 91.8MB in the end (delta: 4.4MB). Peak memory consumption was 27.6MB. Max. memory is 16.1GB. * RCFGBuilder took 11605.62ms. Allocated memory was 140.5MB in the beginning and 1.0GB in the end (delta: 885.0MB). Free memory was 91.8MB in the beginning and 610.2MB in the end (delta: -518.3MB). Peak memory consumption was 633.5MB. Max. memory is 16.1GB. * TraceAbstraction took 62604.85ms. Allocated memory was 1.0GB in the beginning and 4.1GB in the end (delta: 3.1GB). Free memory was 609.1MB in the beginning and 2.0GB in the end (delta: -1.4GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. * Witness Printer took 7.47ms. Allocated memory is still 4.1GB. Free memory is still 2.0GB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 191, overapproximation of bitwiseAnd at line 157, overapproximation of bitwiseComplement at line 188, overapproximation of bitwiseXOr at line 194. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_6 mask_SORT_6 = (SORT_6)-1 >> (sizeof(SORT_6) * 8 - 2); [L29] const SORT_6 msb_SORT_6 = (SORT_6)1 << (2 - 1); [L31] const SORT_8 mask_SORT_8 = (SORT_8)-1 >> (sizeof(SORT_8) * 8 - 3); [L32] const SORT_8 msb_SORT_8 = (SORT_8)1 << (3 - 1); [L34] const SORT_14 mask_SORT_14 = (SORT_14)-1 >> (sizeof(SORT_14) * 8 - 5); [L35] const SORT_14 msb_SORT_14 = (SORT_14)1 << (5 - 1); [L37] const SORT_17 mask_SORT_17 = (SORT_17)-1 >> (sizeof(SORT_17) * 8 - 8); [L38] const SORT_17 msb_SORT_17 = (SORT_17)1 << (8 - 1); [L40] const SORT_105 mask_SORT_105 = (SORT_105)-1 >> (sizeof(SORT_105) * 8 - 4); [L41] const SORT_105 msb_SORT_105 = (SORT_105)1 << (4 - 1); [L43] const SORT_145 mask_SORT_145 = (SORT_145)-1 >> (sizeof(SORT_145) * 8 - 6); [L44] const SORT_145 msb_SORT_145 = (SORT_145)1 << (6 - 1); [L46] const SORT_147 mask_SORT_147 = (SORT_147)-1 >> (sizeof(SORT_147) * 8 - 7); [L47] const SORT_147 msb_SORT_147 = (SORT_147)1 << (7 - 1); [L49] const SORT_150 mask_SORT_150 = (SORT_150)-1 >> (sizeof(SORT_150) * 8 - 9); [L50] const SORT_150 msb_SORT_150 = (SORT_150)1 << (9 - 1); [L52] const SORT_152 mask_SORT_152 = (SORT_152)-1 >> (sizeof(SORT_152) * 8 - 10); [L53] const SORT_152 msb_SORT_152 = (SORT_152)1 << (10 - 1); [L55] const SORT_154 mask_SORT_154 = (SORT_154)-1 >> (sizeof(SORT_154) * 8 - 11); [L56] const SORT_154 msb_SORT_154 = (SORT_154)1 << (11 - 1); [L58] const SORT_156 mask_SORT_156 = (SORT_156)-1 >> (sizeof(SORT_156) * 8 - 12); [L59] const SORT_156 msb_SORT_156 = (SORT_156)1 << (12 - 1); [L61] const SORT_1 var_27 = 0; [L62] const SORT_17 var_31 = 0; [L63] const SORT_6 var_37 = 0; [L64] const SORT_1 var_45 = 1; [L65] const SORT_8 var_46 = 1; [L66] const SORT_8 var_49 = 3; [L67] const SORT_8 var_52 = 2; [L68] const SORT_8 var_56 = 5; [L69] const SORT_8 var_59 = 7; [L70] const SORT_8 var_62 = 6; [L71] const SORT_8 var_66 = 4; [L72] const SORT_6 var_72 = 2; [L73] const SORT_6 var_74 = 1; [L74] const SORT_6 var_84 = 3; [L75] const SORT_14 var_95 = 11; [L76] const SORT_14 var_97 = 10; [L77] const SORT_14 var_99 = 2; [L78] const SORT_14 var_101 = 9; [L79] const SORT_14 var_117 = 21; [L80] const SORT_14 var_119 = 20; [L81] const SORT_14 var_121 = 19; [L82] const SORT_14 var_123 = 18; [L83] const SORT_14 var_125 = 17; [L84] const SORT_14 var_127 = 16; [L85] const SORT_14 var_129 = 15; [L86] const SORT_14 var_131 = 14; [L87] const SORT_14 var_133 = 8; [L88] const SORT_14 var_135 = 6; [L89] const SORT_14 var_137 = 3; [L90] const SORT_14 var_139 = 5; [L91] const SORT_14 var_159 = 4; [L92] const SORT_14 var_161 = 1; [L93] const SORT_14 var_171 = 7; [L94] const SORT_14 var_189 = 13; [L95] const SORT_14 var_197 = 12; [L96] const SORT_14 var_218 = 23; [L97] const SORT_14 var_221 = 22; [L98] const SORT_14 var_230 = 25; [L99] const SORT_14 var_233 = 27; [L100] const SORT_14 var_236 = 26; [L101] const SORT_14 var_240 = 29; [L102] const SORT_14 var_243 = 31; [L103] const SORT_14 var_246 = 30; [L104] const SORT_14 var_250 = 28; [L105] const SORT_14 var_256 = 24; [L106] const SORT_145 var_279 = 0; [L107] const SORT_17 var_299 = 1; [L108] const SORT_17 var_396 = 3; [L110] SORT_1 input_2; [L111] SORT_1 input_3; [L112] SORT_1 input_4; [L113] SORT_1 input_5; [L114] SORT_6 input_7; [L115] SORT_8 input_9; [L116] SORT_6 input_10; [L117] SORT_1 input_11; [L118] SORT_1 input_12; [L119] SORT_1 input_13; [L120] SORT_14 input_15; [L121] SORT_6 input_16; [L122] SORT_17 input_18; [L123] SORT_6 input_19; [L124] SORT_1 input_20; [L125] SORT_1 input_21; [L126] SORT_6 input_22; [L127] SORT_17 input_23; [L128] SORT_17 input_24; [L129] SORT_1 input_25; [L130] SORT_6 input_26; [L132] SORT_1 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L133] SORT_17 state_32 = __VERIFIER_nondet_uchar() & mask_SORT_17; [L134] SORT_1 state_34 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L135] SORT_6 state_38 = __VERIFIER_nondet_uchar() & mask_SORT_6; [L136] SORT_17 state_301 = __VERIFIER_nondet_uchar() & mask_SORT_17; [L137] SORT_1 state_315 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L138] SORT_6 state_344 = __VERIFIER_nondet_uchar() & mask_SORT_6; [L140] SORT_1 init_29_arg_1 = var_27; [L141] state_28 = init_29_arg_1 [L142] SORT_17 init_33_arg_1 = var_31; [L143] state_32 = init_33_arg_1 [L144] SORT_1 init_35_arg_1 = var_27; [L145] state_34 = init_35_arg_1 [L146] SORT_6 init_39_arg_1 = var_37; [L147] state_38 = init_39_arg_1 [L148] SORT_17 init_302_arg_1 = var_31; [L149] state_301 = init_302_arg_1 [L150] SORT_1 init_316_arg_1 = var_27; [L151] state_315 = init_316_arg_1 [L152] SORT_6 init_345_arg_1 = var_37; [L153] state_344 = init_345_arg_1 VAL [init_29_arg_1=0, init_302_arg_1=0, init_316_arg_1=0, init_33_arg_1=0, init_345_arg_1=0, init_35_arg_1=0, init_39_arg_1=0, mask_SORT_1=1, mask_SORT_105=15, mask_SORT_14=31, mask_SORT_145=63, mask_SORT_147=127, mask_SORT_150=511, mask_SORT_152=1023, mask_SORT_154=2047, mask_SORT_156=4095, mask_SORT_17=255, mask_SORT_6=3, mask_SORT_8=7, msb_SORT_1=1, msb_SORT_105=8, msb_SORT_14=16, msb_SORT_145=32, msb_SORT_147=64, msb_SORT_150=256, msb_SORT_152=512, msb_SORT_154=1024, msb_SORT_156=2048, msb_SORT_17=128, msb_SORT_6=2, msb_SORT_8=4, state_28=0, state_301=0, state_315=0, state_32=0, state_34=0, state_344=0, state_38=0, var_101=9, var_117=21, var_119=20, var_121=19, var_123=18, var_125=17, var_127=16, var_129=15, var_131=14, var_133=8, var_135=6, var_137=3, var_139=5, var_159=4, var_161=1, var_171=7, var_189=13, var_197=12, var_218=23, var_221=22, var_230=25, var_233=27, var_236=26, var_240=29, var_243=31, var_246=30, var_250=28, var_256=24, var_27=0, var_279=0, var_299=1, var_31=0, var_37=0, var_396=3, var_45=1, var_46=1, var_49=3, var_52=2, var_56=5, var_59=7, var_62=6, var_66=4, var_72=2, var_74=1, var_84=3, var_95=11, var_97=10, var_99=2] [L156] input_2 = __VERIFIER_nondet_uchar() [L157] input_2 = input_2 & mask_SORT_1 [L158] input_3 = __VERIFIER_nondet_uchar() [L159] input_3 = input_3 & mask_SORT_1 [L160] input_4 = __VERIFIER_nondet_uchar() [L161] input_5 = __VERIFIER_nondet_uchar() [L162] input_5 = input_5 & mask_SORT_1 [L163] input_7 = __VERIFIER_nondet_uchar() [L164] input_7 = input_7 & mask_SORT_6 [L165] input_9 = __VERIFIER_nondet_uchar() [L166] input_9 = input_9 & mask_SORT_8 [L167] input_10 = __VERIFIER_nondet_uchar() [L168] input_10 = input_10 & mask_SORT_6 [L169] input_11 = __VERIFIER_nondet_uchar() [L170] input_11 = input_11 & mask_SORT_1 [L171] input_12 = __VERIFIER_nondet_uchar() [L172] input_13 = __VERIFIER_nondet_uchar() [L173] input_15 = __VERIFIER_nondet_uchar() [L174] input_15 = input_15 & mask_SORT_14 [L175] input_16 = __VERIFIER_nondet_uchar() [L176] input_18 = __VERIFIER_nondet_uchar() [L177] input_19 = __VERIFIER_nondet_uchar() [L178] input_20 = __VERIFIER_nondet_uchar() [L179] input_21 = __VERIFIER_nondet_uchar() [L180] input_22 = __VERIFIER_nondet_uchar() [L181] input_23 = __VERIFIER_nondet_uchar() [L182] input_24 = __VERIFIER_nondet_uchar() [L183] input_25 = __VERIFIER_nondet_uchar() [L184] input_26 = __VERIFIER_nondet_uchar() [L187] SORT_1 var_30_arg_0 = state_28; [L188] SORT_1 var_30 = ~var_30_arg_0; [L189] SORT_1 var_81_arg_0 = input_12; [L190] SORT_1 var_81_arg_1 = input_11; [L191] SORT_6 var_81 = ((SORT_6)var_81_arg_0 << 1) | var_81_arg_1; [L192] var_81 = var_81 & mask_SORT_6 [L193] SORT_6 var_82_arg_0 = var_81; [L194] var_82_arg_0 ^= var_82_arg_0 >> 4 [L195] var_82_arg_0 ^= var_82_arg_0 >> 2 [L196] var_82_arg_0 ^= var_82_arg_0 >> 1 [L197] SORT_1 var_82 = var_82_arg_0; [L198] SORT_8 var_287_arg_0 = input_9; [L199] SORT_8 var_287_arg_1 = var_52; [L200] SORT_1 var_287 = var_287_arg_0 == var_287_arg_1; [L201] SORT_8 var_286_arg_0 = input_9; [L202] SORT_8 var_286_arg_1 = var_46; [L203] SORT_1 var_286 = var_286_arg_0 == var_286_arg_1; [L204] SORT_8 var_285_arg_0 = input_9; [L205] SORT_8 var_285_arg_1 = var_66; [L206] SORT_1 var_285 = var_285_arg_0 == var_285_arg_1; [L207] SORT_8 var_284_arg_0 = input_9; [L208] SORT_8 var_284_arg_1 = var_56; [L209] SORT_1 var_284 = var_284_arg_0 == var_284_arg_1; [L210] SORT_1 var_288_arg_0 = var_285; [L211] SORT_1 var_288_arg_1 = var_284; [L212] SORT_6 var_288 = ((SORT_6)var_288_arg_0 << 1) | var_288_arg_1; [L213] var_288 = var_288 & mask_SORT_6 [L214] SORT_1 var_289_arg_0 = var_286; [L215] SORT_6 var_289_arg_1 = var_288; [L216] SORT_8 var_289 = ((SORT_8)var_289_arg_0 << 2) | var_289_arg_1; [L217] var_289 = var_289 & mask_SORT_8 [L218] SORT_1 var_290_arg_0 = var_287; [L219] SORT_8 var_290_arg_1 = var_289; [L220] SORT_105 var_290 = ((SORT_105)var_290_arg_0 << 3) | var_290_arg_1; [L221] var_290 = var_290 & mask_SORT_105 [L222] SORT_105 var_291_arg_0 = var_290; [L223] SORT_1 var_291 = var_291_arg_0 != 0; [L224] SORT_6 var_75_arg_0 = input_10; [L225] SORT_6 var_75_arg_1 = var_74; [L226] SORT_1 var_75 = var_75_arg_0 == var_75_arg_1; [L227] SORT_8 var_63_arg_0 = input_9; [L228] SORT_8 var_63_arg_1 = var_62; [L229] SORT_1 var_63 = var_63_arg_0 == var_63_arg_1; [L230] SORT_8 var_60_arg_0 = input_9; [L231] SORT_8 var_60_arg_1 = var_59; [L232] SORT_1 var_60 = var_60_arg_0 == var_60_arg_1; [L233] SORT_1 var_64_arg_0 = var_63; [L234] SORT_1 var_64_arg_1 = var_60; [L235] SORT_1 var_64 = var_64_arg_0 | var_64_arg_1; [L236] var_64 = var_64 & mask_SORT_1 [L237] SORT_8 var_57_arg_0 = input_9; [L238] SORT_8 var_57_arg_1 = var_56; [L239] SORT_1 var_57 = var_57_arg_0 == var_57_arg_1; [L240] SORT_8 var_67_arg_0 = input_9; [L241] SORT_8 var_67_arg_1 = var_66; [L242] SORT_1 var_67 = var_67_arg_0 == var_67_arg_1; [L243] SORT_1 var_68_arg_0 = var_57; [L244] SORT_1 var_68_arg_1 = var_67; [L245] SORT_6 var_68 = ((SORT_6)var_68_arg_0 << 1) | var_68_arg_1; [L246] var_68 = var_68 & mask_SORT_6 [L247] SORT_1 var_69_arg_0 = var_64; [L248] SORT_6 var_69_arg_1 = var_68; [L249] SORT_8 var_69 = ((SORT_8)var_69_arg_0 << 2) | var_69_arg_1; [L250] var_69 = var_69 & mask_SORT_8 [L251] SORT_8 var_70_arg_0 = var_69; [L252] SORT_1 var_70 = var_70_arg_0 != 0; [L253] SORT_1 var_61_arg_0 = var_60; [L254] SORT_1 var_61_arg_1 = var_45; [L255] SORT_1 var_61_arg_2 = var_45; [L256] EXPR var_61_arg_0 ? var_61_arg_1 : var_61_arg_2 [L256] SORT_1 var_61 = var_61_arg_0 ? var_61_arg_1 : var_61_arg_2; [L257] SORT_1 var_58_arg_0 = var_57; [L258] SORT_1 var_58_arg_1 = var_27; [L259] SORT_1 var_58_arg_2 = var_27; [L260] EXPR var_58_arg_0 ? var_58_arg_1 : var_58_arg_2 [L260] SORT_1 var_58 = var_58_arg_0 ? var_58_arg_1 : var_58_arg_2; [L261] SORT_1 var_65_arg_0 = var_64; [L262] SORT_1 var_65_arg_1 = var_61; [L263] SORT_1 var_65_arg_2 = var_58; [L264] EXPR var_65_arg_0 ? var_65_arg_1 : var_65_arg_2 [L264] SORT_1 var_65 = var_65_arg_0 ? var_65_arg_1 : var_65_arg_2; [L265] SORT_8 var_53_arg_0 = input_9; [L266] SORT_8 var_53_arg_1 = var_52; [L267] SORT_1 var_53 = var_53_arg_0 == var_53_arg_1; [L268] SORT_8 var_50_arg_0 = input_9; [L269] SORT_8 var_50_arg_1 = var_49; [L270] SORT_1 var_50 = var_50_arg_0 == var_50_arg_1; [L271] SORT_1 var_54_arg_0 = var_53; [L272] SORT_1 var_54_arg_1 = var_50; [L273] SORT_1 var_54 = var_54_arg_0 | var_54_arg_1; [L274] var_54 = var_54 & mask_SORT_1 [L275] SORT_1 var_51_arg_0 = var_50; [L276] SORT_1 var_51_arg_1 = var_45; [L277] SORT_1 var_51_arg_2 = var_27; [L278] EXPR var_51_arg_0 ? var_51_arg_1 : var_51_arg_2 [L278] SORT_1 var_51 = var_51_arg_0 ? var_51_arg_1 : var_51_arg_2; [L279] SORT_8 var_47_arg_0 = input_9; [L280] SORT_8 var_47_arg_1 = var_46; [L281] SORT_1 var_47 = var_47_arg_0 == var_47_arg_1; [L282] SORT_1 var_48_arg_0 = var_47; [L283] SORT_1 var_48_arg_1 = var_27; [L284] SORT_1 var_48_arg_2 = var_45; [L285] EXPR var_48_arg_0 ? var_48_arg_1 : var_48_arg_2 [L285] SORT_1 var_48 = var_48_arg_0 ? var_48_arg_1 : var_48_arg_2; [L286] SORT_1 var_55_arg_0 = var_54; [L287] SORT_1 var_55_arg_1 = var_51; [L288] SORT_1 var_55_arg_2 = var_48; [L289] EXPR var_55_arg_0 ? var_55_arg_1 : var_55_arg_2 [L289] SORT_1 var_55 = var_55_arg_0 ? var_55_arg_1 : var_55_arg_2; [L290] SORT_1 var_71_arg_0 = var_70; [L291] SORT_1 var_71_arg_1 = var_65; [L292] SORT_1 var_71_arg_2 = var_55; [L293] EXPR var_71_arg_0 ? var_71_arg_1 : var_71_arg_2 [L293] SORT_1 var_71 = var_71_arg_0 ? var_71_arg_1 : var_71_arg_2; [L294] var_71 = var_71 & mask_SORT_1 [L295] SORT_6 var_73_arg_0 = input_10; [L296] SORT_6 var_73_arg_1 = var_72; [L297] SORT_1 var_73 = var_73_arg_0 == var_73_arg_1; [L298] SORT_1 var_281_arg_0 = var_75; [L299] SORT_1 var_281_arg_1 = var_73; [L300] SORT_6 var_281 = ((SORT_6)var_281_arg_0 << 1) | var_281_arg_1; [L301] var_281 = var_281 & mask_SORT_6 [L302] SORT_6 var_282_arg_0 = var_281; [L303] SORT_1 var_282 = var_282_arg_0 != 0; [L304] SORT_1 var_283_arg_0 = var_71; [L305] SORT_1 var_283_arg_1 = var_282; [L306] SORT_1 var_283_arg_2 = var_27; [L307] EXPR var_283_arg_0 ? var_283_arg_1 : var_283_arg_2 [L307] SORT_1 var_283 = var_283_arg_0 ? var_283_arg_1 : var_283_arg_2; [L308] SORT_1 var_292_arg_0 = var_291; [L309] SORT_1 var_292_arg_1 = var_75; [L310] SORT_1 var_292_arg_2 = var_283; [L311] EXPR var_292_arg_0 ? var_292_arg_1 : var_292_arg_2 [L311] SORT_1 var_292 = var_292_arg_0 ? var_292_arg_1 : var_292_arg_2; [L312] SORT_6 var_85_arg_0 = input_7; [L313] SORT_6 var_85_arg_1 = var_84; [L314] SORT_1 var_85 = var_85_arg_0 == var_85_arg_1; [L315] SORT_1 var_293_arg_0 = var_292; [L316] SORT_1 var_293_arg_1 = var_85; [L317] SORT_6 var_293 = ((SORT_6)var_293_arg_0 << 1) | var_293_arg_1; [L318] var_293 = var_293 & mask_SORT_6 [L319] SORT_1 var_294_arg_0 = var_82; [L320] SORT_6 var_294_arg_1 = var_293; [L321] SORT_8 var_294 = ((SORT_8)var_294_arg_0 << 2) | var_294_arg_1; [L322] var_294 = var_294 & mask_SORT_8 [L323] SORT_8 var_295_arg_0 = var_294; [L324] SORT_1 var_295 = var_295_arg_0 != 0; [L325] SORT_1 var_296_arg_0 = input_13; [L326] SORT_1 var_296_arg_1 = var_295; [L327] SORT_6 var_296 = ((SORT_6)var_296_arg_0 << 1) | var_296_arg_1; [L328] var_296 = var_296 & mask_SORT_6 [L329] SORT_6 var_297_arg_0 = var_296; [L330] SORT_1 var_297 = var_297_arg_0 == mask_SORT_6; [L331] SORT_14 var_247_arg_0 = input_15; [L332] SORT_14 var_247_arg_1 = var_246; [L333] SORT_1 var_247 = var_247_arg_0 == var_247_arg_1; [L334] SORT_14 var_244_arg_0 = input_15; [L335] SORT_14 var_244_arg_1 = var_243; [L336] SORT_1 var_244 = var_244_arg_0 == var_244_arg_1; [L337] SORT_1 var_248_arg_0 = var_247; [L338] SORT_1 var_248_arg_1 = var_244; [L339] SORT_1 var_248 = var_248_arg_0 | var_248_arg_1; [L340] var_248 = var_248 & mask_SORT_1 [L341] SORT_14 var_241_arg_0 = input_15; [L342] SORT_14 var_241_arg_1 = var_240; [L343] SORT_1 var_241 = var_241_arg_0 == var_241_arg_1; [L344] SORT_14 var_251_arg_0 = input_15; [L345] SORT_14 var_251_arg_1 = var_250; [L346] SORT_1 var_251 = var_251_arg_0 == var_251_arg_1; [L347] SORT_1 var_252_arg_0 = var_241; [L348] SORT_1 var_252_arg_1 = var_251; [L349] SORT_6 var_252 = ((SORT_6)var_252_arg_0 << 1) | var_252_arg_1; [L350] var_252 = var_252 & mask_SORT_6 [L351] SORT_1 var_253_arg_0 = var_248; [L352] SORT_6 var_253_arg_1 = var_252; [L353] SORT_8 var_253 = ((SORT_8)var_253_arg_0 << 2) | var_253_arg_1; [L354] var_253 = var_253 & mask_SORT_8 [L355] SORT_8 var_254_arg_0 = var_253; [L356] SORT_1 var_254 = var_254_arg_0 != 0; [L357] SORT_14 var_237_arg_0 = input_15; [L358] SORT_14 var_237_arg_1 = var_236; [L359] SORT_1 var_237 = var_237_arg_0 == var_237_arg_1; [L360] SORT_14 var_234_arg_0 = input_15; [L361] SORT_14 var_234_arg_1 = var_233; [L362] SORT_1 var_234 = var_234_arg_0 == var_234_arg_1; [L363] SORT_1 var_238_arg_0 = var_237; [L364] SORT_1 var_238_arg_1 = var_234; [L365] SORT_1 var_238 = var_238_arg_0 | var_238_arg_1; [L366] var_238 = var_238 & mask_SORT_1 [L367] SORT_14 var_231_arg_0 = input_15; [L368] SORT_14 var_231_arg_1 = var_230; [L369] SORT_1 var_231 = var_231_arg_0 == var_231_arg_1; [L370] SORT_14 var_257_arg_0 = input_15; [L371] SORT_14 var_257_arg_1 = var_256; [L372] SORT_1 var_257 = var_257_arg_0 == var_257_arg_1; [L373] SORT_1 var_258_arg_0 = var_231; [L374] SORT_1 var_258_arg_1 = var_257; [L375] SORT_6 var_258 = ((SORT_6)var_258_arg_0 << 1) | var_258_arg_1; [L376] var_258 = var_258 & mask_SORT_6 [L377] SORT_1 var_259_arg_0 = var_238; [L378] SORT_6 var_259_arg_1 = var_258; [L379] SORT_8 var_259 = ((SORT_8)var_259_arg_0 << 2) | var_259_arg_1; [L380] var_259 = var_259 & mask_SORT_8 [L381] SORT_1 var_260_arg_0 = var_254; [L382] SORT_8 var_260_arg_1 = var_259; [L383] SORT_105 var_260 = ((SORT_105)var_260_arg_0 << 3) | var_260_arg_1; [L384] var_260 = var_260 & mask_SORT_105 [L385] SORT_105 var_261_arg_0 = var_260; [L386] SORT_1 var_261 = var_261_arg_0 != 0; [L387] SORT_14 var_222_arg_0 = input_15; [L388] SORT_14 var_222_arg_1 = var_221; [L389] SORT_1 var_222 = var_222_arg_0 == var_222_arg_1; [L390] SORT_14 var_219_arg_0 = input_15; [L391] SORT_14 var_219_arg_1 = var_218; [L392] SORT_1 var_219 = var_219_arg_0 == var_219_arg_1; [L393] SORT_1 var_223_arg_0 = var_222; [L394] SORT_1 var_223_arg_1 = var_219; [L395] SORT_1 var_223 = var_223_arg_0 | var_223_arg_1; [L396] var_223 = var_223 & mask_SORT_1 [L397] SORT_14 var_216_arg_0 = input_15; [L398] SORT_14 var_216_arg_1 = var_117; [L399] SORT_1 var_216 = var_216_arg_0 == var_216_arg_1; [L400] SORT_14 var_225_arg_0 = input_15; [L401] SORT_14 var_225_arg_1 = var_119; [L402] SORT_1 var_225 = var_225_arg_0 == var_225_arg_1; [L403] SORT_1 var_226_arg_0 = var_216; [L404] SORT_1 var_226_arg_1 = var_225; [L405] SORT_6 var_226 = ((SORT_6)var_226_arg_0 << 1) | var_226_arg_1; [L406] var_226 = var_226 & mask_SORT_6 [L407] SORT_1 var_227_arg_0 = var_223; [L408] SORT_6 var_227_arg_1 = var_226; [L409] SORT_8 var_227 = ((SORT_8)var_227_arg_0 << 2) | var_227_arg_1; [L410] var_227 = var_227 & mask_SORT_8 [L411] SORT_8 var_228_arg_0 = var_227; [L412] SORT_1 var_228 = var_228_arg_0 != 0; [L413] SORT_14 var_213_arg_0 = input_15; [L414] SORT_14 var_213_arg_1 = var_123; [L415] SORT_1 var_213 = var_213_arg_0 == var_213_arg_1; [L416] SORT_14 var_211_arg_0 = input_15; [L417] SORT_14 var_211_arg_1 = var_121; [L418] SORT_1 var_211 = var_211_arg_0 == var_211_arg_1; [L419] SORT_1 var_214_arg_0 = var_213; [L420] SORT_1 var_214_arg_1 = var_211; [L421] SORT_1 var_214 = var_214_arg_0 | var_214_arg_1; [L422] var_214 = var_214 & mask_SORT_1 [L423] SORT_14 var_209_arg_0 = input_15; [L424] SORT_14 var_209_arg_1 = var_125; [L425] SORT_1 var_209 = var_209_arg_0 == var_209_arg_1; [L426] SORT_14 var_263_arg_0 = input_15; [L427] SORT_14 var_263_arg_1 = var_127; [L428] SORT_1 var_263 = var_263_arg_0 == var_263_arg_1; [L429] SORT_1 var_264_arg_0 = var_209; [L430] SORT_1 var_264_arg_1 = var_263; [L431] SORT_6 var_264 = ((SORT_6)var_264_arg_0 << 1) | var_264_arg_1; [L432] var_264 = var_264 & mask_SORT_6 [L433] SORT_1 var_265_arg_0 = var_214; [L434] SORT_6 var_265_arg_1 = var_264; [L435] SORT_8 var_265 = ((SORT_8)var_265_arg_0 << 2) | var_265_arg_1; [L436] var_265 = var_265 & mask_SORT_8 [L437] SORT_1 var_266_arg_0 = var_228; [L438] SORT_8 var_266_arg_1 = var_265; [L439] SORT_105 var_266 = ((SORT_105)var_266_arg_0 << 3) | var_266_arg_1; [L440] var_266 = var_266 & mask_SORT_105 [L441] SORT_1 var_267_arg_0 = var_261; [L442] SORT_105 var_267_arg_1 = var_266; [L443] SORT_14 var_267 = ((SORT_14)var_267_arg_0 << 4) | var_267_arg_1; [L444] var_267 = var_267 & mask_SORT_14 [L445] SORT_14 var_268_arg_0 = var_267; [L446] SORT_1 var_268 = var_268_arg_0 != 0; [L447] SORT_1 var_245_arg_0 = var_244; [L448] SORT_1 var_245_arg_1 = var_45; [L449] SORT_1 var_245_arg_2 = var_45; [L450] EXPR var_245_arg_0 ? var_245_arg_1 : var_245_arg_2 [L450] SORT_1 var_245 = var_245_arg_0 ? var_245_arg_1 : var_245_arg_2; [L451] SORT_1 var_242_arg_0 = var_241; [L452] SORT_1 var_242_arg_1 = var_45; [L453] SORT_1 var_242_arg_2 = var_45; [L454] EXPR var_242_arg_0 ? var_242_arg_1 : var_242_arg_2 [L454] SORT_1 var_242 = var_242_arg_0 ? var_242_arg_1 : var_242_arg_2; [L455] SORT_1 var_249_arg_0 = var_248; [L456] SORT_1 var_249_arg_1 = var_245; [L457] SORT_1 var_249_arg_2 = var_242; [L458] EXPR var_249_arg_0 ? var_249_arg_1 : var_249_arg_2 [L458] SORT_1 var_249 = var_249_arg_0 ? var_249_arg_1 : var_249_arg_2; [L459] SORT_1 var_235_arg_0 = var_234; [L460] SORT_1 var_235_arg_1 = var_45; [L461] SORT_1 var_235_arg_2 = var_45; [L462] EXPR var_235_arg_0 ? var_235_arg_1 : var_235_arg_2 [L462] SORT_1 var_235 = var_235_arg_0 ? var_235_arg_1 : var_235_arg_2; [L463] SORT_1 var_232_arg_0 = var_231; [L464] SORT_1 var_232_arg_1 = var_45; [L465] SORT_1 var_232_arg_2 = var_45; [L466] EXPR var_232_arg_0 ? var_232_arg_1 : var_232_arg_2 [L466] SORT_1 var_232 = var_232_arg_0 ? var_232_arg_1 : var_232_arg_2; [L467] SORT_1 var_239_arg_0 = var_238; [L468] SORT_1 var_239_arg_1 = var_235; [L469] SORT_1 var_239_arg_2 = var_232; [L470] EXPR var_239_arg_0 ? var_239_arg_1 : var_239_arg_2 [L470] SORT_1 var_239 = var_239_arg_0 ? var_239_arg_1 : var_239_arg_2; [L471] SORT_1 var_255_arg_0 = var_254; [L472] SORT_1 var_255_arg_1 = var_249; [L473] SORT_1 var_255_arg_2 = var_239; [L474] EXPR var_255_arg_0 ? var_255_arg_1 : var_255_arg_2 [L474] SORT_1 var_255 = var_255_arg_0 ? var_255_arg_1 : var_255_arg_2; [L475] SORT_1 var_220_arg_0 = var_219; [L476] SORT_1 var_220_arg_1 = var_45; [L477] SORT_1 var_220_arg_2 = var_45; [L478] EXPR var_220_arg_0 ? var_220_arg_1 : var_220_arg_2 [L478] SORT_1 var_220 = var_220_arg_0 ? var_220_arg_1 : var_220_arg_2; [L479] SORT_1 var_217_arg_0 = var_216; [L480] SORT_1 var_217_arg_1 = var_27; [L481] SORT_1 var_217_arg_2 = var_27; [L482] EXPR var_217_arg_0 ? var_217_arg_1 : var_217_arg_2 [L482] SORT_1 var_217 = var_217_arg_0 ? var_217_arg_1 : var_217_arg_2; [L483] SORT_1 var_224_arg_0 = var_223; [L484] SORT_1 var_224_arg_1 = var_220; [L485] SORT_1 var_224_arg_2 = var_217; [L486] EXPR var_224_arg_0 ? var_224_arg_1 : var_224_arg_2 [L486] SORT_1 var_224 = var_224_arg_0 ? var_224_arg_1 : var_224_arg_2; [L487] SORT_1 var_212_arg_0 = var_211; [L488] SORT_1 var_212_arg_1 = var_27; [L489] SORT_1 var_212_arg_2 = var_27; [L490] EXPR var_212_arg_0 ? var_212_arg_1 : var_212_arg_2 [L490] SORT_1 var_212 = var_212_arg_0 ? var_212_arg_1 : var_212_arg_2; [L491] SORT_1 var_210_arg_0 = var_209; [L492] SORT_1 var_210_arg_1 = var_27; [L493] SORT_1 var_210_arg_2 = var_27; [L494] EXPR var_210_arg_0 ? var_210_arg_1 : var_210_arg_2 [L494] SORT_1 var_210 = var_210_arg_0 ? var_210_arg_1 : var_210_arg_2; [L495] SORT_1 var_215_arg_0 = var_214; [L496] SORT_1 var_215_arg_1 = var_212; [L497] SORT_1 var_215_arg_2 = var_210; [L498] EXPR var_215_arg_0 ? var_215_arg_1 : var_215_arg_2 [L498] SORT_1 var_215 = var_215_arg_0 ? var_215_arg_1 : var_215_arg_2; [L499] SORT_1 var_229_arg_0 = var_228; [L500] SORT_1 var_229_arg_1 = var_224; [L501] SORT_1 var_229_arg_2 = var_215; [L502] EXPR var_229_arg_0 ? var_229_arg_1 : var_229_arg_2 [L502] SORT_1 var_229 = var_229_arg_0 ? var_229_arg_1 : var_229_arg_2; [L503] SORT_1 var_262_arg_0 = var_261; [L504] SORT_1 var_262_arg_1 = var_255; [L505] SORT_1 var_262_arg_2 = var_229; [L506] EXPR var_262_arg_0 ? var_262_arg_1 : var_262_arg_2 [L506] SORT_1 var_262 = var_262_arg_0 ? var_262_arg_1 : var_262_arg_2; [L507] SORT_14 var_194_arg_0 = input_15; [L508] SORT_14 var_194_arg_1 = var_131; [L509] SORT_1 var_194 = var_194_arg_0 == var_194_arg_1; [L510] SORT_14 var_192_arg_0 = input_15; [L511] SORT_14 var_192_arg_1 = var_129; [L512] SORT_1 var_192 = var_192_arg_0 == var_192_arg_1; [L513] SORT_1 var_195_arg_0 = var_194; [L514] SORT_1 var_195_arg_1 = var_192; [L515] SORT_1 var_195 = var_195_arg_0 | var_195_arg_1; [L516] var_195 = var_195 & mask_SORT_1 [L517] SORT_14 var_190_arg_0 = input_15; [L518] SORT_14 var_190_arg_1 = var_189; [L519] SORT_1 var_190 = var_190_arg_0 == var_190_arg_1; [L520] SORT_14 var_198_arg_0 = input_15; [L521] SORT_14 var_198_arg_1 = var_197; [L522] SORT_1 var_198 = var_198_arg_0 == var_198_arg_1; [L523] SORT_1 var_199_arg_0 = var_190; [L524] SORT_1 var_199_arg_1 = var_198; [L525] SORT_6 var_199 = ((SORT_6)var_199_arg_0 << 1) | var_199_arg_1; [L526] var_199 = var_199 & mask_SORT_6 [L527] SORT_1 var_200_arg_0 = var_195; [L528] SORT_6 var_200_arg_1 = var_199; [L529] SORT_8 var_200 = ((SORT_8)var_200_arg_0 << 2) | var_200_arg_1; [L530] var_200 = var_200 & mask_SORT_8 [L531] SORT_8 var_201_arg_0 = var_200; [L532] SORT_1 var_201 = var_201_arg_0 != 0; [L533] SORT_14 var_186_arg_0 = input_15; [L534] SORT_14 var_186_arg_1 = var_97; [L535] SORT_1 var_186 = var_186_arg_0 == var_186_arg_1; [L536] SORT_14 var_184_arg_0 = input_15; [L537] SORT_14 var_184_arg_1 = var_95; [L538] SORT_1 var_184 = var_184_arg_0 == var_184_arg_1; [L539] SORT_1 var_187_arg_0 = var_186; [L540] SORT_1 var_187_arg_1 = var_184; [L541] SORT_1 var_187 = var_187_arg_0 | var_187_arg_1; [L542] var_187 = var_187 & mask_SORT_1 [L543] SORT_14 var_182_arg_0 = input_15; [L544] SORT_14 var_182_arg_1 = var_101; [L545] SORT_1 var_182 = var_182_arg_0 == var_182_arg_1; [L546] SORT_14 var_203_arg_0 = input_15; [L547] SORT_14 var_203_arg_1 = var_133; [L548] SORT_1 var_203 = var_203_arg_0 == var_203_arg_1; [L549] SORT_1 var_204_arg_0 = var_182; [L550] SORT_1 var_204_arg_1 = var_203; [L551] SORT_6 var_204 = ((SORT_6)var_204_arg_0 << 1) | var_204_arg_1; [L552] var_204 = var_204 & mask_SORT_6 [L553] SORT_1 var_205_arg_0 = var_187; [L554] SORT_6 var_205_arg_1 = var_204; [L555] SORT_8 var_205 = ((SORT_8)var_205_arg_0 << 2) | var_205_arg_1; [L556] var_205 = var_205 & mask_SORT_8 [L557] SORT_1 var_206_arg_0 = var_201; [L558] SORT_8 var_206_arg_1 = var_205; [L559] SORT_105 var_206 = ((SORT_105)var_206_arg_0 << 3) | var_206_arg_1; [L560] var_206 = var_206 & mask_SORT_105 [L561] SORT_105 var_207_arg_0 = var_206; [L562] SORT_1 var_207 = var_207_arg_0 != 0; [L563] SORT_1 var_193_arg_0 = var_192; [L564] SORT_1 var_193_arg_1 = var_27; [L565] SORT_1 var_193_arg_2 = var_27; [L566] EXPR var_193_arg_0 ? var_193_arg_1 : var_193_arg_2 [L566] SORT_1 var_193 = var_193_arg_0 ? var_193_arg_1 : var_193_arg_2; [L567] SORT_1 var_191_arg_0 = var_190; [L568] SORT_1 var_191_arg_1 = var_45; [L569] SORT_1 var_191_arg_2 = var_45; [L570] EXPR var_191_arg_0 ? var_191_arg_1 : var_191_arg_2 [L570] SORT_1 var_191 = var_191_arg_0 ? var_191_arg_1 : var_191_arg_2; [L571] SORT_1 var_196_arg_0 = var_195; [L572] SORT_1 var_196_arg_1 = var_193; [L573] SORT_1 var_196_arg_2 = var_191; [L574] EXPR var_196_arg_0 ? var_196_arg_1 : var_196_arg_2 [L574] SORT_1 var_196 = var_196_arg_0 ? var_196_arg_1 : var_196_arg_2; [L575] SORT_1 var_185_arg_0 = var_184; [L576] SORT_1 var_185_arg_1 = var_27; [L577] SORT_1 var_185_arg_2 = var_27; [L578] EXPR var_185_arg_0 ? var_185_arg_1 : var_185_arg_2 [L578] SORT_1 var_185 = var_185_arg_0 ? var_185_arg_1 : var_185_arg_2; [L579] SORT_1 var_183_arg_0 = var_182; [L580] SORT_1 var_183_arg_1 = var_27; [L581] SORT_1 var_183_arg_2 = var_27; [L582] EXPR var_183_arg_0 ? var_183_arg_1 : var_183_arg_2 [L582] SORT_1 var_183 = var_183_arg_0 ? var_183_arg_1 : var_183_arg_2; [L583] SORT_1 var_188_arg_0 = var_187; [L584] SORT_1 var_188_arg_1 = var_185; [L585] SORT_1 var_188_arg_2 = var_183; [L586] EXPR var_188_arg_0 ? var_188_arg_1 : var_188_arg_2 [L586] SORT_1 var_188 = var_188_arg_0 ? var_188_arg_1 : var_188_arg_2; [L587] SORT_1 var_202_arg_0 = var_201; [L588] SORT_1 var_202_arg_1 = var_196; [L589] SORT_1 var_202_arg_2 = var_188; [L590] EXPR var_202_arg_0 ? var_202_arg_1 : var_202_arg_2 [L590] SORT_1 var_202 = var_202_arg_0 ? var_202_arg_1 : var_202_arg_2; [L591] SORT_14 var_174_arg_0 = input_15; [L592] SORT_14 var_174_arg_1 = var_135; [L593] SORT_1 var_174 = var_174_arg_0 == var_174_arg_1; [L594] SORT_14 var_172_arg_0 = input_15; [L595] SORT_14 var_172_arg_1 = var_171; [L596] SORT_1 var_172 = var_172_arg_0 == var_172_arg_1; [L597] SORT_1 var_175_arg_0 = var_174; [L598] SORT_1 var_175_arg_1 = var_172; [L599] SORT_1 var_175 = var_175_arg_0 | var_175_arg_1; [L600] var_175 = var_175 & mask_SORT_1 [L601] SORT_14 var_169_arg_0 = input_15; [L602] SORT_14 var_169_arg_1 = var_139; [L603] SORT_1 var_169 = var_169_arg_0 == var_169_arg_1; [L604] SORT_14 var_177_arg_0 = input_15; [L605] SORT_14 var_177_arg_1 = var_159; [L606] SORT_1 var_177 = var_177_arg_0 == var_177_arg_1; [L607] SORT_1 var_178_arg_0 = var_169; [L608] SORT_1 var_178_arg_1 = var_177; [L609] SORT_6 var_178 = ((SORT_6)var_178_arg_0 << 1) | var_178_arg_1; [L610] var_178 = var_178 & mask_SORT_6 [L611] SORT_1 var_179_arg_0 = var_175; [L612] SORT_6 var_179_arg_1 = var_178; [L613] SORT_8 var_179 = ((SORT_8)var_179_arg_0 << 2) | var_179_arg_1; [L614] var_179 = var_179 & mask_SORT_8 [L615] SORT_8 var_180_arg_0 = var_179; [L616] SORT_1 var_180 = var_180_arg_0 != 0; [L617] SORT_1 var_173_arg_0 = var_172; [L618] SORT_1 var_173_arg_1 = var_45; [L619] SORT_1 var_173_arg_2 = var_27; [L620] EXPR var_173_arg_0 ? var_173_arg_1 : var_173_arg_2 [L620] SORT_1 var_173 = var_173_arg_0 ? var_173_arg_1 : var_173_arg_2; [L621] SORT_1 var_170_arg_0 = var_169; [L622] SORT_1 var_170_arg_1 = var_27; [L623] SORT_1 var_170_arg_2 = var_27; [L624] EXPR var_170_arg_0 ? var_170_arg_1 : var_170_arg_2 [L624] SORT_1 var_170 = var_170_arg_0 ? var_170_arg_1 : var_170_arg_2; [L625] SORT_1 var_176_arg_0 = var_175; [L626] SORT_1 var_176_arg_1 = var_173; [L627] SORT_1 var_176_arg_2 = var_170; [L628] EXPR var_176_arg_0 ? var_176_arg_1 : var_176_arg_2 [L628] SORT_1 var_176 = var_176_arg_0 ? var_176_arg_1 : var_176_arg_2; [L629] SORT_14 var_166_arg_0 = input_15; [L630] SORT_14 var_166_arg_1 = var_99; [L631] SORT_1 var_166 = var_166_arg_0 == var_166_arg_1; [L632] SORT_14 var_164_arg_0 = input_15; [L633] SORT_14 var_164_arg_1 = var_137; [L634] SORT_1 var_164 = var_164_arg_0 == var_164_arg_1; [L635] SORT_1 var_167_arg_0 = var_166; [L636] SORT_1 var_167_arg_1 = var_164; [L637] SORT_1 var_167 = var_167_arg_0 | var_167_arg_1; [L638] var_167 = var_167 & mask_SORT_1 [L639] SORT_1 var_165_arg_0 = var_164; [L640] SORT_1 var_165_arg_1 = var_27; [L641] SORT_1 var_165_arg_2 = var_27; [L642] EXPR var_165_arg_0 ? var_165_arg_1 : var_165_arg_2 [L642] SORT_1 var_165 = var_165_arg_0 ? var_165_arg_1 : var_165_arg_2; [L643] SORT_14 var_162_arg_0 = input_15; [L644] SORT_14 var_162_arg_1 = var_161; [L645] SORT_1 var_162 = var_162_arg_0 == var_162_arg_1; [L646] SORT_1 var_163_arg_0 = var_162; [L647] SORT_1 var_163_arg_1 = var_45; [L648] SORT_1 var_163_arg_2 = var_45; [L649] EXPR var_163_arg_0 ? var_163_arg_1 : var_163_arg_2 [L649] SORT_1 var_163 = var_163_arg_0 ? var_163_arg_1 : var_163_arg_2; [L650] SORT_1 var_168_arg_0 = var_167; [L651] SORT_1 var_168_arg_1 = var_165; [L652] SORT_1 var_168_arg_2 = var_163; [L653] EXPR var_168_arg_0 ? var_168_arg_1 : var_168_arg_2 [L653] SORT_1 var_168 = var_168_arg_0 ? var_168_arg_1 : var_168_arg_2; [L654] SORT_1 var_181_arg_0 = var_180; [L655] SORT_1 var_181_arg_1 = var_176; [L656] SORT_1 var_181_arg_2 = var_168; [L657] EXPR var_181_arg_0 ? var_181_arg_1 : var_181_arg_2 [L657] SORT_1 var_181 = var_181_arg_0 ? var_181_arg_1 : var_181_arg_2; [L658] SORT_1 var_208_arg_0 = var_207; [L659] SORT_1 var_208_arg_1 = var_202; [L660] SORT_1 var_208_arg_2 = var_181; [L661] EXPR var_208_arg_0 ? var_208_arg_1 : var_208_arg_2 [L661] SORT_1 var_208 = var_208_arg_0 ? var_208_arg_1 : var_208_arg_2; [L662] SORT_1 var_269_arg_0 = var_268; [L663] SORT_1 var_269_arg_1 = var_262; [L664] SORT_1 var_269_arg_2 = var_208; [L665] EXPR var_269_arg_0 ? var_269_arg_1 : var_269_arg_2 [L665] SORT_1 var_269 = var_269_arg_0 ? var_269_arg_1 : var_269_arg_2; [L666] SORT_14 var_160_arg_0 = input_15; [L667] SORT_14 var_160_arg_1 = var_159; [L668] SORT_1 var_160 = var_160_arg_0 == var_160_arg_1; [L669] SORT_14 var_140_arg_0 = input_15; [L670] SORT_14 var_140_arg_1 = var_139; [L671] SORT_1 var_140 = var_140_arg_0 == var_140_arg_1; [L672] SORT_14 var_138_arg_0 = input_15; [L673] SORT_14 var_138_arg_1 = var_137; [L674] SORT_1 var_138 = var_138_arg_0 == var_138_arg_1; [L675] SORT_14 var_136_arg_0 = input_15; [L676] SORT_14 var_136_arg_1 = var_135; [L677] SORT_1 var_136 = var_136_arg_0 == var_136_arg_1; [L678] SORT_14 var_134_arg_0 = input_15; [L679] SORT_14 var_134_arg_1 = var_133; [L680] SORT_1 var_134 = var_134_arg_0 == var_134_arg_1; [L681] SORT_14 var_132_arg_0 = input_15; [L682] SORT_14 var_132_arg_1 = var_131; [L683] SORT_1 var_132 = var_132_arg_0 == var_132_arg_1; [L684] SORT_14 var_130_arg_0 = input_15; [L685] SORT_14 var_130_arg_1 = var_129; [L686] SORT_1 var_130 = var_130_arg_0 == var_130_arg_1; [L687] SORT_14 var_128_arg_0 = input_15; [L688] SORT_14 var_128_arg_1 = var_127; [L689] SORT_1 var_128 = var_128_arg_0 == var_128_arg_1; [L690] SORT_14 var_126_arg_0 = input_15; [L691] SORT_14 var_126_arg_1 = var_125; [L692] SORT_1 var_126 = var_126_arg_0 == var_126_arg_1; [L693] SORT_14 var_124_arg_0 = input_15; [L694] SORT_14 var_124_arg_1 = var_123; [L695] SORT_1 var_124 = var_124_arg_0 == var_124_arg_1; [L696] SORT_14 var_122_arg_0 = input_15; [L697] SORT_14 var_122_arg_1 = var_121; [L698] SORT_1 var_122 = var_122_arg_0 == var_122_arg_1; [L699] SORT_14 var_120_arg_0 = input_15; [L700] SORT_14 var_120_arg_1 = var_119; [L701] SORT_1 var_120 = var_120_arg_0 == var_120_arg_1; [L702] SORT_14 var_118_arg_0 = input_15; [L703] SORT_14 var_118_arg_1 = var_117; [L704] SORT_1 var_118 = var_118_arg_0 == var_118_arg_1; [L705] SORT_1 var_141_arg_0 = var_120; [L706] SORT_1 var_141_arg_1 = var_118; [L707] SORT_6 var_141 = ((SORT_6)var_141_arg_0 << 1) | var_141_arg_1; [L708] var_141 = var_141 & mask_SORT_6 [L709] SORT_1 var_142_arg_0 = var_122; [L710] SORT_6 var_142_arg_1 = var_141; [L711] SORT_8 var_142 = ((SORT_8)var_142_arg_0 << 2) | var_142_arg_1; [L712] var_142 = var_142 & mask_SORT_8 [L713] SORT_1 var_143_arg_0 = var_124; [L714] SORT_8 var_143_arg_1 = var_142; [L715] SORT_105 var_143 = ((SORT_105)var_143_arg_0 << 3) | var_143_arg_1; [L716] var_143 = var_143 & mask_SORT_105 [L717] SORT_1 var_144_arg_0 = var_126; [L718] SORT_105 var_144_arg_1 = var_143; [L719] SORT_14 var_144 = ((SORT_14)var_144_arg_0 << 4) | var_144_arg_1; [L720] var_144 = var_144 & mask_SORT_14 [L721] SORT_1 var_146_arg_0 = var_128; [L722] SORT_14 var_146_arg_1 = var_144; [L723] SORT_145 var_146 = ((SORT_145)var_146_arg_0 << 5) | var_146_arg_1; [L724] var_146 = var_146 & mask_SORT_145 [L725] SORT_1 var_148_arg_0 = var_130; [L726] SORT_145 var_148_arg_1 = var_146; [L727] SORT_147 var_148 = ((SORT_147)var_148_arg_0 << 6) | var_148_arg_1; [L728] var_148 = var_148 & mask_SORT_147 [L729] SORT_1 var_149_arg_0 = var_132; [L730] SORT_147 var_149_arg_1 = var_148; [L731] SORT_17 var_149 = ((SORT_17)var_149_arg_0 << 7) | var_149_arg_1; [L732] var_149 = var_149 & mask_SORT_17 [L733] SORT_1 var_151_arg_0 = var_134; [L734] SORT_17 var_151_arg_1 = var_149; [L735] SORT_150 var_151 = ((SORT_150)var_151_arg_0 << 8) | var_151_arg_1; [L736] var_151 = var_151 & mask_SORT_150 [L737] SORT_1 var_153_arg_0 = var_136; [L738] SORT_150 var_153_arg_1 = var_151; [L739] SORT_152 var_153 = ((SORT_152)var_153_arg_0 << 9) | var_153_arg_1; [L740] var_153 = var_153 & mask_SORT_152 [L741] SORT_1 var_155_arg_0 = var_138; [L742] SORT_152 var_155_arg_1 = var_153; [L743] SORT_154 var_155 = ((SORT_154)var_155_arg_0 << 10) | var_155_arg_1; [L744] var_155 = var_155 & mask_SORT_154 [L745] SORT_1 var_157_arg_0 = var_140; [L746] SORT_154 var_157_arg_1 = var_155; [L747] SORT_156 var_157 = ((SORT_156)var_157_arg_0 << 11) | var_157_arg_1; [L748] var_157 = var_157 & mask_SORT_156 [L749] SORT_156 var_158_arg_0 = var_157; [L750] SORT_1 var_158 = var_158_arg_0 != 0; [L751] SORT_1 var_270_arg_0 = var_160; [L752] SORT_1 var_270_arg_1 = var_158; [L753] SORT_6 var_270 = ((SORT_6)var_270_arg_0 << 1) | var_270_arg_1; [L754] var_270 = var_270 & mask_SORT_6 [L755] SORT_1 var_271_arg_0 = var_269; [L756] SORT_6 var_271_arg_1 = var_270; [L757] SORT_8 var_271 = ((SORT_8)var_271_arg_0 << 2) | var_271_arg_1; [L758] var_271 = var_271 & mask_SORT_8 [L759] SORT_8 var_272_arg_0 = var_271; [L760] SORT_1 var_272 = var_272_arg_0 != 0; [L761] SORT_1 var_86_arg_0 = var_85; [L762] SORT_1 var_86 = ~var_86_arg_0; [L763] var_86 = var_86 & mask_SORT_1 [L764] SORT_1 var_87_arg_0 = input_13; [L765] SORT_1 var_87_arg_1 = var_86; [L766] SORT_6 var_87 = ((SORT_6)var_87_arg_0 << 1) | var_87_arg_1; [L767] var_87 = var_87 & mask_SORT_6 [L768] SORT_6 var_88_arg_0 = var_87; [L769] SORT_1 var_88 = var_88_arg_0 == mask_SORT_6; [L770] SORT_1 var_273_arg_0 = var_272; [L771] SORT_1 var_273_arg_1 = var_88; [L772] SORT_6 var_273 = ((SORT_6)var_273_arg_0 << 1) | var_273_arg_1; [L773] var_273 = var_273 & mask_SORT_6 [L774] SORT_1 var_274_arg_0 = var_82; [L775] SORT_6 var_274_arg_1 = var_273; [L776] SORT_8 var_274 = ((SORT_8)var_274_arg_0 << 2) | var_274_arg_1; [L777] var_274 = var_274 & mask_SORT_8 [L778] SORT_8 var_275_arg_0 = var_274; [L779] SORT_1 var_275 = var_275_arg_0 == mask_SORT_8; [L780] SORT_1 var_114_arg_0 = input_13; [L781] SORT_1 var_114 = ~var_114_arg_0; [L782] SORT_1 var_112_arg_0 = input_13; [L783] SORT_1 var_112_arg_1 = var_85; [L784] SORT_6 var_112 = ((SORT_6)var_112_arg_0 << 1) | var_112_arg_1; [L785] var_112 = var_112 & mask_SORT_6 [L786] SORT_6 var_113_arg_0 = var_112; [L787] SORT_1 var_113 = var_113_arg_0 == mask_SORT_6; [L788] SORT_1 var_115_arg_0 = var_114; [L789] SORT_1 var_115_arg_1 = var_113; [L790] SORT_6 var_115 = ((SORT_6)var_115_arg_0 << 1) | var_115_arg_1; [L791] var_115 = var_115 & mask_SORT_6 [L792] SORT_6 var_116_arg_0 = var_115; [L793] SORT_1 var_116 = var_116_arg_0 != 0; [L794] SORT_1 var_276_arg_0 = var_275; [L795] SORT_1 var_276_arg_1 = var_116; [L796] SORT_6 var_276 = ((SORT_6)var_276_arg_0 << 1) | var_276_arg_1; [L797] var_276 = var_276 & mask_SORT_6 [L798] SORT_6 var_277_arg_0 = var_276; [L799] SORT_1 var_277 = var_277_arg_0 != 0; [L800] SORT_14 var_102_arg_0 = input_15; [L801] SORT_14 var_102_arg_1 = var_101; [L802] SORT_1 var_102 = var_102_arg_0 == var_102_arg_1; [L803] SORT_14 var_100_arg_0 = input_15; [L804] SORT_14 var_100_arg_1 = var_99; [L805] SORT_1 var_100 = var_100_arg_0 == var_100_arg_1; [L806] SORT_14 var_98_arg_0 = input_15; [L807] SORT_14 var_98_arg_1 = var_97; [L808] SORT_1 var_98 = var_98_arg_0 == var_98_arg_1; [L809] SORT_14 var_96_arg_0 = input_15; [L810] SORT_14 var_96_arg_1 = var_95; [L811] SORT_1 var_96 = var_96_arg_0 == var_96_arg_1; [L812] SORT_1 var_103_arg_0 = var_98; [L813] SORT_1 var_103_arg_1 = var_96; [L814] SORT_6 var_103 = ((SORT_6)var_103_arg_0 << 1) | var_103_arg_1; [L815] var_103 = var_103 & mask_SORT_6 [L816] SORT_1 var_104_arg_0 = var_100; [L817] SORT_6 var_104_arg_1 = var_103; [L818] SORT_8 var_104 = ((SORT_8)var_104_arg_0 << 2) | var_104_arg_1; [L819] var_104 = var_104 & mask_SORT_8 [L820] SORT_1 var_106_arg_0 = var_102; [L821] SORT_8 var_106_arg_1 = var_104; [L822] SORT_105 var_106 = ((SORT_105)var_106_arg_0 << 3) | var_106_arg_1; [L823] var_106 = var_106 & mask_SORT_105 [L824] SORT_105 var_107_arg_0 = var_106; [L825] SORT_1 var_107 = var_107_arg_0 != 0; [L826] SORT_1 var_108_arg_0 = var_107; [L827] SORT_1 var_108_arg_1 = var_88; [L828] SORT_6 var_108 = ((SORT_6)var_108_arg_0 << 1) | var_108_arg_1; [L829] var_108 = var_108 & mask_SORT_6 [L830] SORT_1 var_109_arg_0 = var_82; [L831] SORT_6 var_109_arg_1 = var_108; [L832] SORT_8 var_109 = ((SORT_8)var_109_arg_0 << 2) | var_109_arg_1; [L833] var_109 = var_109 & mask_SORT_8 [L834] SORT_8 var_110_arg_0 = var_109; [L835] SORT_1 var_110 = var_110_arg_0 == mask_SORT_8; [L836] SORT_1 var_76_arg_0 = var_75; [L837] SORT_1 var_76 = ~var_76_arg_0; [L838] SORT_1 var_92_arg_0 = var_76; [L839] SORT_1 var_92_arg_1 = var_73; [L840] SORT_6 var_92 = ((SORT_6)var_92_arg_0 << 1) | var_92_arg_1; [L841] var_92 = var_92 & mask_SORT_6 [L842] SORT_6 var_93_arg_0 = var_92; [L843] SORT_1 var_93 = var_93_arg_0 == mask_SORT_6; [L844] SORT_1 var_94_arg_0 = var_93; [L845] SORT_1 var_94_arg_1 = var_75; [L846] SORT_6 var_94 = ((SORT_6)var_94_arg_0 << 1) | var_94_arg_1; [L847] SORT_1 var_83_arg_0 = var_82; [L848] SORT_1 var_83 = ~var_83_arg_0; [L849] var_83 = var_83 & mask_SORT_1 [L850] SORT_1 var_89_arg_0 = var_88; [L851] SORT_1 var_89_arg_1 = var_83; [L852] SORT_6 var_89 = ((SORT_6)var_89_arg_0 << 1) | var_89_arg_1; [L853] var_89 = var_89 & mask_SORT_6 [L854] SORT_6 var_90_arg_0 = var_89; [L855] SORT_1 var_90 = var_90_arg_0 == mask_SORT_6; [L856] SORT_1 var_77_arg_0 = var_73; [L857] SORT_1 var_77_arg_1 = var_71; [L858] SORT_6 var_77 = ((SORT_6)var_77_arg_0 << 1) | var_77_arg_1; [L859] var_77 = var_77 & mask_SORT_6 [L860] SORT_1 var_78_arg_0 = var_76; [L861] SORT_6 var_78_arg_1 = var_77; [L862] SORT_8 var_78 = ((SORT_8)var_78_arg_0 << 2) | var_78_arg_1; [L863] var_78 = var_78 & mask_SORT_8 [L864] SORT_8 var_79_arg_0 = var_78; [L865] SORT_1 var_79 = var_79_arg_0 == mask_SORT_8; [L866] SORT_1 var_80_arg_0 = var_79; [L867] SORT_1 var_80_arg_1 = var_27; [L868] SORT_6 var_80 = ((SORT_6)var_80_arg_0 << 1) | var_80_arg_1; [L869] SORT_1 var_91_arg_0 = var_90; [L870] SORT_6 var_91_arg_1 = var_80; [L871] SORT_6 var_91_arg_2 = var_37; [L872] EXPR var_91_arg_0 ? var_91_arg_1 : var_91_arg_2 [L872] SORT_6 var_91 = var_91_arg_0 ? var_91_arg_1 : var_91_arg_2; [L873] SORT_1 var_111_arg_0 = var_110; [L874] SORT_6 var_111_arg_1 = var_94; [L875] SORT_6 var_111_arg_2 = var_91; [L876] EXPR var_111_arg_0 ? var_111_arg_1 : var_111_arg_2 [L876] SORT_6 var_111 = var_111_arg_0 ? var_111_arg_1 : var_111_arg_2; [L877] SORT_1 var_278_arg_0 = var_277; [L878] SORT_6 var_278_arg_1 = var_37; [L879] SORT_6 var_278_arg_2 = var_111; [L880] EXPR var_278_arg_0 ? var_278_arg_1 : var_278_arg_2 [L880] SORT_6 var_278 = var_278_arg_0 ? var_278_arg_1 : var_278_arg_2; [L881] var_278 = var_278 & mask_SORT_6 [L882] SORT_145 var_280_arg_0 = var_279; [L883] SORT_6 var_280_arg_1 = var_278; [L884] SORT_17 var_280 = ((SORT_17)var_280_arg_0 << 2) | var_280_arg_1; [L885] SORT_1 var_40_arg_0 = state_34; [L886] SORT_6 var_40_arg_1 = state_38; [L887] SORT_6 var_40_arg_2 = input_19; [L888] EXPR var_40_arg_0 ? var_40_arg_1 : var_40_arg_2 [L888] SORT_6 var_40 = var_40_arg_0 ? var_40_arg_1 : var_40_arg_2; [L889] SORT_6 var_43_arg_0 = var_40; [L890] SORT_1 var_43 = var_43_arg_0 >> 0; [L891] var_43 = var_43 & mask_SORT_1 [L892] SORT_6 var_41_arg_0 = var_40; [L893] SORT_1 var_41 = var_41_arg_0 >> 1; [L894] var_41 = var_41 & mask_SORT_1 [L895] SORT_1 var_36_arg_0 = state_34; [L896] SORT_17 var_36_arg_1 = state_32; [L897] SORT_17 var_36_arg_2 = input_18; [L898] EXPR var_36_arg_0 ? var_36_arg_1 : var_36_arg_2 [L898] SORT_17 var_36 = var_36_arg_0 ? var_36_arg_1 : var_36_arg_2; [L899] SORT_1 var_42_arg_0 = var_41; [L900] SORT_17 var_42_arg_1 = var_36; [L901] SORT_17 var_42_arg_2 = var_31; [L902] EXPR var_42_arg_0 ? var_42_arg_1 : var_42_arg_2 [L902] SORT_17 var_42 = var_42_arg_0 ? var_42_arg_1 : var_42_arg_2; [L903] SORT_1 var_44_arg_0 = var_43; [L904] SORT_17 var_44_arg_1 = var_31; [L905] SORT_17 var_44_arg_2 = var_42; [L906] EXPR var_44_arg_0 ? var_44_arg_1 : var_44_arg_2 [L906] SORT_17 var_44 = var_44_arg_0 ? var_44_arg_1 : var_44_arg_2; [L907] SORT_1 var_298_arg_0 = var_297; [L908] SORT_17 var_298_arg_1 = var_280; [L909] SORT_17 var_298_arg_2 = var_44; [L910] EXPR var_298_arg_0 ? var_298_arg_1 : var_298_arg_2 [L910] SORT_17 var_298 = var_298_arg_0 ? var_298_arg_1 : var_298_arg_2; [L911] var_298 = var_298 & mask_SORT_17 [L912] SORT_17 var_300_arg_0 = var_298; [L913] SORT_17 var_300_arg_1 = var_299; [L914] SORT_1 var_300 = var_300_arg_0 == var_300_arg_1; [L915] SORT_1 var_303_arg_0 = state_34; [L916] SORT_17 var_303_arg_1 = state_301; [L917] SORT_17 var_303_arg_2 = input_18; [L918] EXPR var_303_arg_0 ? var_303_arg_1 : var_303_arg_2 [L918] SORT_17 var_303 = var_303_arg_0 ? var_303_arg_1 : var_303_arg_2; [L919] SORT_1 var_304_arg_0 = var_41; [L920] SORT_17 var_304_arg_1 = var_303; [L921] SORT_17 var_304_arg_2 = var_31; [L922] EXPR var_304_arg_0 ? var_304_arg_1 : var_304_arg_2 [L922] SORT_17 var_304 = var_304_arg_0 ? var_304_arg_1 : var_304_arg_2; [L923] SORT_1 var_305_arg_0 = var_43; [L924] SORT_17 var_305_arg_1 = var_31; [L925] SORT_17 var_305_arg_2 = var_304; [L926] EXPR var_305_arg_0 ? var_305_arg_1 : var_305_arg_2 [L926] SORT_17 var_305 = var_305_arg_0 ? var_305_arg_1 : var_305_arg_2; [L927] SORT_1 var_306_arg_0 = var_297; [L928] SORT_17 var_306_arg_1 = var_280; [L929] SORT_17 var_306_arg_2 = var_305; [L930] EXPR var_306_arg_0 ? var_306_arg_1 : var_306_arg_2 [L930] SORT_17 var_306 = var_306_arg_0 ? var_306_arg_1 : var_306_arg_2; [L931] var_306 = var_306 & mask_SORT_17 [L932] SORT_17 var_307_arg_0 = var_306; [L933] SORT_17 var_307_arg_1 = var_299; [L934] SORT_1 var_307 = var_307_arg_0 == var_307_arg_1; [L935] SORT_1 var_308_arg_0 = var_300; [L936] SORT_1 var_308_arg_1 = var_307; [L937] SORT_1 var_308 = var_308_arg_0 == var_308_arg_1; [L938] SORT_1 var_309_arg_0 = var_30; [L939] SORT_1 var_309_arg_1 = var_308; [L940] SORT_1 var_309 = var_309_arg_0 | var_309_arg_1; [L941] SORT_1 var_312_arg_0 = var_309; [L942] SORT_1 var_312 = ~var_312_arg_0; [L943] SORT_1 var_313_arg_0 = var_45; [L944] SORT_1 var_313_arg_1 = var_312; [L945] SORT_1 var_313 = var_313_arg_0 & var_313_arg_1; [L946] var_313 = var_313 & mask_SORT_1 [L947] SORT_1 bad_314_arg_0 = var_313; [L948] CALL __VERIFIER_assert(!(bad_314_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: 62.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 35.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-03 03:46:14,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/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_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal19.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/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_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/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 d253dfb68b4173df7f6947bc33b1784f9ee6b90b67f91e05e82d61a0f1e333ac --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:46:16,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:46:16,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:46:16,811 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:46:16,811 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:46:16,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:46:16,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:46:16,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:46:16,821 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:46:16,822 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:46:16,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:46:16,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:46:16,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:46:16,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:46:16,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:46:16,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:46:16,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:46:16,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:46:16,847 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:46:16,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:46:16,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:46:16,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:46:16,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:46:16,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:46:16,863 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:46:16,870 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:46:16,870 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:46:16,871 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:46:16,872 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:46:16,873 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:46:16,873 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:46:16,877 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:46:16,878 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:46:16,879 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:46:16,880 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:46:16,881 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:46:16,882 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:46:16,883 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:46:16,883 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:46:16,884 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:46:16,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:46:16,887 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 03:46:16,931 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:46:16,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:46:16,933 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:46:16,933 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:46:16,934 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:46:16,934 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:46:16,934 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:46:16,935 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:46:16,935 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:46:16,935 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:46:16,936 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:46:16,936 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:46:16,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:46:16,938 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:46:16,938 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:46:16,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:46:16,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:46:16,939 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 03:46:16,939 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 03:46:16,939 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 03:46:16,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:46:16,940 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:46:16,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:46:16,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:46:16,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 03:46:16,941 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:46:16,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:46:16,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:46:16,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:46:16,942 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:46:16,942 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 03:46:16,942 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 03:46:16,943 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:46:16,943 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:46:16,943 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 03:46:16,943 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_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d253dfb68b4173df7f6947bc33b1784f9ee6b90b67f91e05e82d61a0f1e333ac [2022-11-03 03:46:17,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:46:17,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:46:17,348 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:46:17,350 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:46:17,351 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:46:17,352 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal19.c [2022-11-03 03:46:17,443 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/data/8122deb77/cc04914e33e14261bf02ae76727b82b2/FLAG534739bba [2022-11-03 03:46:18,163 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:46:18,165 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal19.c [2022-11-03 03:46:18,183 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/data/8122deb77/cc04914e33e14261bf02ae76727b82b2/FLAG534739bba [2022-11-03 03:46:18,414 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/data/8122deb77/cc04914e33e14261bf02ae76727b82b2 [2022-11-03 03:46:18,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:46:18,420 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:46:18,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:46:18,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:46:18,429 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:46:18,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:46:18" (1/1) ... [2022-11-03 03:46:18,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19e1e0ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:18, skipping insertion in model container [2022-11-03 03:46:18,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:46:18" (1/1) ... [2022-11-03 03:46:18,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:46:18,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:46:18,727 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_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal19.c[1107,1120] [2022-11-03 03:46:19,164 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:46:19,168 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:46:19,193 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_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal19.c[1107,1120] [2022-11-03 03:46:19,363 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:46:19,375 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:46:19,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:19 WrapperNode [2022-11-03 03:46:19,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:46:19,377 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:46:19,377 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:46:19,377 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:46:19,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:19" (1/1) ... [2022-11-03 03:46:19,441 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:19" (1/1) ... [2022-11-03 03:46:19,575 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1810 [2022-11-03 03:46:19,576 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:46:19,577 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:46:19,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:46:19,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:46:19,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:19" (1/1) ... [2022-11-03 03:46:19,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:19" (1/1) ... [2022-11-03 03:46:19,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:19" (1/1) ... [2022-11-03 03:46:19,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:19" (1/1) ... [2022-11-03 03:46:19,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:19" (1/1) ... [2022-11-03 03:46:19,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:19" (1/1) ... [2022-11-03 03:46:19,643 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:19" (1/1) ... [2022-11-03 03:46:19,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:19" (1/1) ... [2022-11-03 03:46:19,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:46:19,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:46:19,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:46:19,684 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:46:19,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:19" (1/1) ... [2022-11-03 03:46:19,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:46:19,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:46:19,732 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:46:19,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:46:19,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:46:19,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:46:20,254 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:46:20,257 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:46:21,579 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:46:21,589 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:46:21,589 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 03:46:21,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:46:21 BoogieIcfgContainer [2022-11-03 03:46:21,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:46:21,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:46:21,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:46:21,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:46:21,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:46:18" (1/3) ... [2022-11-03 03:46:21,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14e0336b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:46:21, skipping insertion in model container [2022-11-03 03:46:21,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:19" (2/3) ... [2022-11-03 03:46:21,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14e0336b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:46:21, skipping insertion in model container [2022-11-03 03:46:21,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:46:21" (3/3) ... [2022-11-03 03:46:21,601 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal19.c [2022-11-03 03:46:21,619 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:46:21,619 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:46:21,685 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:46:21,692 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;@99dae6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:46:21,692 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:46:21,697 INFO L276 IsEmpty]: Start isEmpty. Operand has 209 states, 207 states have (on average 1.497584541062802) internal successors, (310), 208 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:21,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:46:21,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:21,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:21,709 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:21,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:21,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1747459213, now seen corresponding path program 1 times [2022-11-03 03:46:21,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:21,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1137755220] [2022-11-03 03:46:21,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:21,732 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:21,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:21,739 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:21,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 03:46:22,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:22,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:46:22,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:22,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:46:22,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:22,850 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:22,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1137755220] [2022-11-03 03:46:22,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1137755220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:22,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:22,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:46:22,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772023220] [2022-11-03 03:46:22,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:22,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:46:22,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:22,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:46:22,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:46:22,889 INFO L87 Difference]: Start difference. First operand has 209 states, 207 states have (on average 1.497584541062802) internal successors, (310), 208 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:23,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:23,240 INFO L93 Difference]: Finished difference Result 818 states and 1225 transitions. [2022-11-03 03:46:23,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:46:23,243 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:46:23,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:23,257 INFO L225 Difference]: With dead ends: 818 [2022-11-03 03:46:23,257 INFO L226 Difference]: Without dead ends: 611 [2022-11-03 03:46:23,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:46:23,264 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 2092 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2092 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:23,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2092 Valid, 1193 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:46:23,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2022-11-03 03:46:23,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 207. [2022-11-03 03:46:23,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.4854368932038835) internal successors, (306), 206 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:23,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 306 transitions. [2022-11-03 03:46:23,317 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 306 transitions. Word has length 109 [2022-11-03 03:46:23,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:23,318 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 306 transitions. [2022-11-03 03:46:23,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:23,318 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 306 transitions. [2022-11-03 03:46:23,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:46:23,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:23,321 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:23,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:23,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:23,537 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:23,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:23,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1158214069, now seen corresponding path program 1 times [2022-11-03 03:46:23,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:23,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [975211784] [2022-11-03 03:46:23,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:23,540 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:23,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:23,543 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:23,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 03:46:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:24,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:46:24,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:24,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:46:24,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:24,370 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:24,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [975211784] [2022-11-03 03:46:24,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [975211784] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:24,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:24,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:46:24,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647838505] [2022-11-03 03:46:24,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:24,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:46:24,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:24,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:46:24,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:46:24,374 INFO L87 Difference]: Start difference. First operand 207 states and 306 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:24,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:24,628 INFO L93 Difference]: Finished difference Result 820 states and 1214 transitions. [2022-11-03 03:46:24,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:46:24,629 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:46:24,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:24,632 INFO L225 Difference]: With dead ends: 820 [2022-11-03 03:46:24,632 INFO L226 Difference]: Without dead ends: 615 [2022-11-03 03:46:24,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:46:24,635 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 2084 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2084 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:24,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2084 Valid, 1195 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:46:24,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-11-03 03:46:24,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 211. [2022-11-03 03:46:24,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.480952380952381) internal successors, (311), 210 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:24,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 311 transitions. [2022-11-03 03:46:24,651 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 311 transitions. Word has length 109 [2022-11-03 03:46:24,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:24,652 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 311 transitions. [2022-11-03 03:46:24,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:24,652 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 311 transitions. [2022-11-03 03:46:24,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:46:24,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:24,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:24,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:24,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:24,876 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:24,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:24,877 INFO L85 PathProgramCache]: Analyzing trace with hash 739282697, now seen corresponding path program 1 times [2022-11-03 03:46:24,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:24,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1915648100] [2022-11-03 03:46:24,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:24,879 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:24,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:24,881 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:24,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 03:46:25,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:25,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:46:25,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:25,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:46:25,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:25,695 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:25,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1915648100] [2022-11-03 03:46:25,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1915648100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:25,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:25,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:46:25,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63136937] [2022-11-03 03:46:25,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:25,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:46:25,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:25,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:46:25,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:46:25,698 INFO L87 Difference]: Start difference. First operand 211 states and 311 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:25,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:25,948 INFO L93 Difference]: Finished difference Result 826 states and 1220 transitions. [2022-11-03 03:46:25,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:46:25,949 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:46:25,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:25,952 INFO L225 Difference]: With dead ends: 826 [2022-11-03 03:46:25,952 INFO L226 Difference]: Without dead ends: 617 [2022-11-03 03:46:25,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:46:25,957 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 2078 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2078 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:25,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2078 Valid, 1197 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:46:25,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2022-11-03 03:46:25,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 213. [2022-11-03 03:46:25,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.4764150943396226) internal successors, (313), 212 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:25,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 313 transitions. [2022-11-03 03:46:25,986 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 313 transitions. Word has length 109 [2022-11-03 03:46:25,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:25,988 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 313 transitions. [2022-11-03 03:46:25,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:25,988 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 313 transitions. [2022-11-03 03:46:25,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:46:25,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:25,993 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:26,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:26,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:26,196 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:26,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:26,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1167120569, now seen corresponding path program 1 times [2022-11-03 03:46:26,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:26,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [366729856] [2022-11-03 03:46:26,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:26,198 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:26,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:26,201 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:26,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 03:46:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:26,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 03:46:26,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:27,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:46:27,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:27,003 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:27,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [366729856] [2022-11-03 03:46:27,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [366729856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:27,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:27,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:46:27,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019421738] [2022-11-03 03:46:27,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:27,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:46:27,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:27,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:46:27,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:46:27,007 INFO L87 Difference]: Start difference. First operand 213 states and 313 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:27,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:27,738 INFO L93 Difference]: Finished difference Result 841 states and 1238 transitions. [2022-11-03 03:46:27,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 03:46:27,739 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:46:27,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:27,741 INFO L225 Difference]: With dead ends: 841 [2022-11-03 03:46:27,742 INFO L226 Difference]: Without dead ends: 630 [2022-11-03 03:46:27,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-11-03 03:46:27,743 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 2388 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2388 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:27,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2388 Valid, 1704 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:46:27,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2022-11-03 03:46:27,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 215. [2022-11-03 03:46:27,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.47196261682243) internal successors, (315), 214 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:27,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 315 transitions. [2022-11-03 03:46:27,753 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 315 transitions. Word has length 109 [2022-11-03 03:46:27,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:27,753 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 315 transitions. [2022-11-03 03:46:27,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:27,754 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 315 transitions. [2022-11-03 03:46:27,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:46:27,755 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:27,755 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:27,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:27,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:27,980 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:27,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:27,981 INFO L85 PathProgramCache]: Analyzing trace with hash 2071115525, now seen corresponding path program 1 times [2022-11-03 03:46:27,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:27,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1716082682] [2022-11-03 03:46:27,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:27,982 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:27,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:27,983 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:27,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 03:46:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:28,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 03:46:28,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:28,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:46:28,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:28,743 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:28,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1716082682] [2022-11-03 03:46:28,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1716082682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:28,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:28,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 03:46:28,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992869124] [2022-11-03 03:46:28,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:28,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 03:46:28,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:28,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 03:46:28,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:46:28,754 INFO L87 Difference]: Start difference. First operand 215 states and 315 transitions. Second operand has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:30,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:30,062 INFO L93 Difference]: Finished difference Result 1083 states and 1580 transitions. [2022-11-03 03:46:30,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-03 03:46:30,063 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:46:30,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:30,066 INFO L225 Difference]: With dead ends: 1083 [2022-11-03 03:46:30,067 INFO L226 Difference]: Without dead ends: 870 [2022-11-03 03:46:30,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=384, Invalid=1022, Unknown=0, NotChecked=0, Total=1406 [2022-11-03 03:46:30,068 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 5593 mSDsluCounter, 2269 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5593 SdHoareTripleChecker+Valid, 2554 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:30,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5593 Valid, 2554 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 03:46:30,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2022-11-03 03:46:30,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 225. [2022-11-03 03:46:30,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.4553571428571428) internal successors, (326), 224 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:30,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 326 transitions. [2022-11-03 03:46:30,080 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 326 transitions. Word has length 109 [2022-11-03 03:46:30,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:30,080 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 326 transitions. [2022-11-03 03:46:30,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:30,081 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 326 transitions. [2022-11-03 03:46:30,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:46:30,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:30,082 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:30,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:30,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:30,298 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:30,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:30,299 INFO L85 PathProgramCache]: Analyzing trace with hash 2099615815, now seen corresponding path program 1 times [2022-11-03 03:46:30,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:30,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [571679281] [2022-11-03 03:46:30,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:30,300 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:30,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:30,300 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:30,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 03:46:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:30,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-03 03:46:30,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:31,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:46:31,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:31,342 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:31,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [571679281] [2022-11-03 03:46:31,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [571679281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:31,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:31,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:46:31,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201800136] [2022-11-03 03:46:31,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:31,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:46:31,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:31,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:46:31,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:46:31,345 INFO L87 Difference]: Start difference. First operand 225 states and 326 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:31,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:31,852 INFO L93 Difference]: Finished difference Result 868 states and 1265 transitions. [2022-11-03 03:46:31,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:46:31,854 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:46:31,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:31,856 INFO L225 Difference]: With dead ends: 868 [2022-11-03 03:46:31,856 INFO L226 Difference]: Without dead ends: 645 [2022-11-03 03:46:31,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:46:31,857 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 2062 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2062 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:31,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2062 Valid, 1163 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:46:31,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2022-11-03 03:46:31,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 231. [2022-11-03 03:46:31,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.4521739130434783) internal successors, (334), 230 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:31,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 334 transitions. [2022-11-03 03:46:31,869 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 334 transitions. Word has length 109 [2022-11-03 03:46:31,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:31,869 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 334 transitions. [2022-11-03 03:46:31,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:31,870 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 334 transitions. [2022-11-03 03:46:31,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:46:31,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:31,871 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:31,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:32,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:32,079 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:32,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:32,080 INFO L85 PathProgramCache]: Analyzing trace with hash -318288251, now seen corresponding path program 1 times [2022-11-03 03:46:32,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:32,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [386848829] [2022-11-03 03:46:32,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:32,081 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:32,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:32,082 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:32,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 03:46:32,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:32,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:46:32,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:32,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:46:32,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:32,788 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:32,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [386848829] [2022-11-03 03:46:32,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [386848829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:32,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:32,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:46:32,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943366543] [2022-11-03 03:46:32,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:32,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:46:32,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:32,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:46:32,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:46:32,791 INFO L87 Difference]: Start difference. First operand 231 states and 334 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:33,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:33,034 INFO L93 Difference]: Finished difference Result 962 states and 1385 transitions. [2022-11-03 03:46:33,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:46:33,035 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:46:33,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:33,037 INFO L225 Difference]: With dead ends: 962 [2022-11-03 03:46:33,037 INFO L226 Difference]: Without dead ends: 733 [2022-11-03 03:46:33,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:46:33,039 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 2047 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2047 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:33,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2047 Valid, 1301 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:46:33,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-11-03 03:46:33,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 233. [2022-11-03 03:46:33,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 1.4482758620689655) internal successors, (336), 232 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:33,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 336 transitions. [2022-11-03 03:46:33,050 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 336 transitions. Word has length 109 [2022-11-03 03:46:33,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:33,050 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 336 transitions. [2022-11-03 03:46:33,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:33,051 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 336 transitions. [2022-11-03 03:46:33,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:46:33,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:33,052 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:33,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:33,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:33,278 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:33,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:33,279 INFO L85 PathProgramCache]: Analyzing trace with hash 2018104259, now seen corresponding path program 1 times [2022-11-03 03:46:33,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:33,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1425607144] [2022-11-03 03:46:33,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:33,280 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:33,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:33,281 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:33,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 03:46:33,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:33,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:46:33,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:33,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:46:33,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:33,953 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:33,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1425607144] [2022-11-03 03:46:33,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1425607144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:33,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:33,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:46:33,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785516272] [2022-11-03 03:46:33,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:33,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:46:33,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:33,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:46:33,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:46:33,956 INFO L87 Difference]: Start difference. First operand 233 states and 336 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:34,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:34,195 INFO L93 Difference]: Finished difference Result 968 states and 1391 transitions. [2022-11-03 03:46:34,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:46:34,196 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:46:34,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:34,198 INFO L225 Difference]: With dead ends: 968 [2022-11-03 03:46:34,199 INFO L226 Difference]: Without dead ends: 737 [2022-11-03 03:46:34,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:46:34,200 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 2039 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2039 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:34,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2039 Valid, 1307 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:46:34,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2022-11-03 03:46:34,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 237. [2022-11-03 03:46:34,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.444915254237288) internal successors, (341), 236 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:34,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 341 transitions. [2022-11-03 03:46:34,212 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 341 transitions. Word has length 109 [2022-11-03 03:46:34,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:34,212 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 341 transitions. [2022-11-03 03:46:34,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:34,213 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 341 transitions. [2022-11-03 03:46:34,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:46:34,214 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:34,214 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:34,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:34,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:34,419 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:34,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:34,420 INFO L85 PathProgramCache]: Analyzing trace with hash -710105087, now seen corresponding path program 1 times [2022-11-03 03:46:34,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:34,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1818094975] [2022-11-03 03:46:34,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:34,421 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:34,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:34,425 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:34,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 03:46:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:34,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:46:34,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:35,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:46:35,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:35,162 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:35,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1818094975] [2022-11-03 03:46:35,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1818094975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:35,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:35,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:46:35,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239109296] [2022-11-03 03:46:35,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:35,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:46:35,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:35,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:46:35,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:46:35,165 INFO L87 Difference]: Start difference. First operand 237 states and 341 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:35,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:35,388 INFO L93 Difference]: Finished difference Result 974 states and 1397 transitions. [2022-11-03 03:46:35,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:46:35,389 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:46:35,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:35,391 INFO L225 Difference]: With dead ends: 974 [2022-11-03 03:46:35,391 INFO L226 Difference]: Without dead ends: 739 [2022-11-03 03:46:35,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:46:35,393 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 2033 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2033 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:35,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2033 Valid, 1310 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:46:35,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2022-11-03 03:46:35,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 239. [2022-11-03 03:46:35,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.4411764705882353) internal successors, (343), 238 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:35,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 343 transitions. [2022-11-03 03:46:35,405 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 343 transitions. Word has length 109 [2022-11-03 03:46:35,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:35,405 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 343 transitions. [2022-11-03 03:46:35,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:35,406 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 343 transitions. [2022-11-03 03:46:35,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:46:35,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:35,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:35,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:35,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:35,624 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:35,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:35,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1852607553, now seen corresponding path program 1 times [2022-11-03 03:46:35,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:35,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1130582196] [2022-11-03 03:46:35,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:35,626 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:35,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:35,627 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:35,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 03:46:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:36,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:46:36,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:36,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:46:36,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:36,344 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:36,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1130582196] [2022-11-03 03:46:36,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1130582196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:36,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:36,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:46:36,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778833460] [2022-11-03 03:46:36,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:36,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:46:36,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:36,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:46:36,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:46:36,348 INFO L87 Difference]: Start difference. First operand 239 states and 343 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:36,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:36,591 INFO L93 Difference]: Finished difference Result 982 states and 1406 transitions. [2022-11-03 03:46:36,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:46:36,595 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:46:36,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:36,598 INFO L225 Difference]: With dead ends: 982 [2022-11-03 03:46:36,598 INFO L226 Difference]: Without dead ends: 745 [2022-11-03 03:46:36,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:46:36,599 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 2023 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2023 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:36,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2023 Valid, 1319 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:46:36,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2022-11-03 03:46:36,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 245. [2022-11-03 03:46:36,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 1.4385245901639345) internal successors, (351), 244 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:36,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 351 transitions. [2022-11-03 03:46:36,611 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 351 transitions. Word has length 109 [2022-11-03 03:46:36,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:36,612 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 351 transitions. [2022-11-03 03:46:36,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:36,612 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 351 transitions. [2022-11-03 03:46:36,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:46:36,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:36,613 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:36,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:36,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:36,827 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:36,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:36,828 INFO L85 PathProgramCache]: Analyzing trace with hash -965384707, now seen corresponding path program 1 times [2022-11-03 03:46:36,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:36,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2006633494] [2022-11-03 03:46:36,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:36,829 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:36,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:36,831 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:36,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 03:46:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:37,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:46:37,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:37,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:46:37,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:37,522 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:37,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2006633494] [2022-11-03 03:46:37,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2006633494] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:37,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:37,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:46:37,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273263597] [2022-11-03 03:46:37,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:37,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:46:37,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:37,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:46:37,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:46:37,524 INFO L87 Difference]: Start difference. First operand 245 states and 351 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:37,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:37,845 INFO L93 Difference]: Finished difference Result 990 states and 1415 transitions. [2022-11-03 03:46:37,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:46:37,845 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:46:37,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:37,848 INFO L225 Difference]: With dead ends: 990 [2022-11-03 03:46:37,848 INFO L226 Difference]: Without dead ends: 747 [2022-11-03 03:46:37,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:46:37,849 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 2017 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2017 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:37,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2017 Valid, 1318 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:46:37,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-11-03 03:46:37,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 247. [2022-11-03 03:46:37,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 1.434959349593496) internal successors, (353), 246 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:37,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 353 transitions. [2022-11-03 03:46:37,861 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 353 transitions. Word has length 109 [2022-11-03 03:46:37,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:37,862 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 353 transitions. [2022-11-03 03:46:37,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:37,862 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 353 transitions. [2022-11-03 03:46:37,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:46:37,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:37,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:37,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:38,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:38,080 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:38,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:38,080 INFO L85 PathProgramCache]: Analyzing trace with hash -888483909, now seen corresponding path program 1 times [2022-11-03 03:46:38,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:38,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1899752229] [2022-11-03 03:46:38,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:38,082 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:38,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:38,083 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:38,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-03 03:46:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:38,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 03:46:38,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:38,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:46:38,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:38,951 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:38,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1899752229] [2022-11-03 03:46:38,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1899752229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:38,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:38,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:46:38,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054706560] [2022-11-03 03:46:38,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:38,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:46:38,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:38,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:46:38,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:46:38,953 INFO L87 Difference]: Start difference. First operand 247 states and 353 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:39,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:39,428 INFO L93 Difference]: Finished difference Result 994 states and 1418 transitions. [2022-11-03 03:46:39,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:46:39,429 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:46:39,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:39,432 INFO L225 Difference]: With dead ends: 994 [2022-11-03 03:46:39,432 INFO L226 Difference]: Without dead ends: 749 [2022-11-03 03:46:39,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:46:39,433 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 2011 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2011 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:39,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2011 Valid, 1253 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:46:39,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-11-03 03:46:39,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 249. [2022-11-03 03:46:39,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.4314516129032258) internal successors, (355), 248 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:39,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 355 transitions. [2022-11-03 03:46:39,446 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 355 transitions. Word has length 109 [2022-11-03 03:46:39,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:39,446 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 355 transitions. [2022-11-03 03:46:39,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:39,447 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 355 transitions. [2022-11-03 03:46:39,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:46:39,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:39,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:39,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:39,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:39,667 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:39,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:39,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1019973881, now seen corresponding path program 1 times [2022-11-03 03:46:39,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:39,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1575597648] [2022-11-03 03:46:39,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:39,668 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:39,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:39,669 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:39,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-03 03:46:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:40,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:46:40,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:40,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:46:40,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:40,347 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:40,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1575597648] [2022-11-03 03:46:40,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1575597648] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:40,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:40,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:46:40,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507861386] [2022-11-03 03:46:40,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:40,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:46:40,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:40,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:46:40,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:46:40,349 INFO L87 Difference]: Start difference. First operand 249 states and 355 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:40,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:40,665 INFO L93 Difference]: Finished difference Result 998 states and 1421 transitions. [2022-11-03 03:46:40,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:46:40,665 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:46:40,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:40,668 INFO L225 Difference]: With dead ends: 998 [2022-11-03 03:46:40,668 INFO L226 Difference]: Without dead ends: 751 [2022-11-03 03:46:40,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:46:40,669 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 2005 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2005 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:40,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2005 Valid, 1324 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:46:40,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2022-11-03 03:46:40,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 251. [2022-11-03 03:46:40,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.428) internal successors, (357), 250 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:40,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 357 transitions. [2022-11-03 03:46:40,681 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 357 transitions. Word has length 109 [2022-11-03 03:46:40,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:40,681 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 357 transitions. [2022-11-03 03:46:40,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:40,681 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 357 transitions. [2022-11-03 03:46:40,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:46:40,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:40,683 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:40,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:40,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:40,905 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:40,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:40,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1973914039, now seen corresponding path program 1 times [2022-11-03 03:46:40,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:40,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1676840740] [2022-11-03 03:46:40,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:40,907 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:40,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:40,908 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:40,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-03 03:46:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:41,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:46:41,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:41,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:46:41,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:41,617 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:41,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1676840740] [2022-11-03 03:46:41,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1676840740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:41,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:41,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:46:41,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412890261] [2022-11-03 03:46:41,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:41,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:46:41,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:41,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:46:41,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:46:41,620 INFO L87 Difference]: Start difference. First operand 251 states and 357 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:41,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:41,908 INFO L93 Difference]: Finished difference Result 1002 states and 1424 transitions. [2022-11-03 03:46:41,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:46:41,908 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:46:41,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:41,911 INFO L225 Difference]: With dead ends: 1002 [2022-11-03 03:46:41,911 INFO L226 Difference]: Without dead ends: 753 [2022-11-03 03:46:41,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:46:41,913 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 1999 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1999 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:41,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1999 Valid, 1327 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:46:41,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-11-03 03:46:41,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 253. [2022-11-03 03:46:41,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.4246031746031746) internal successors, (359), 252 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:41,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 359 transitions. [2022-11-03 03:46:41,925 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 359 transitions. Word has length 109 [2022-11-03 03:46:41,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:41,925 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 359 transitions. [2022-11-03 03:46:41,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:41,926 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 359 transitions. [2022-11-03 03:46:41,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:46:41,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:41,927 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:41,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:42,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:42,148 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:42,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:42,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1241946613, now seen corresponding path program 1 times [2022-11-03 03:46:42,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:42,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1397342680] [2022-11-03 03:46:42,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:42,150 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:42,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:42,151 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:42,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-03 03:46:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:42,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 03:46:42,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:42,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:46:42,942 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:42,942 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:42,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1397342680] [2022-11-03 03:46:42,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1397342680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:42,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:42,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:46:42,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213534414] [2022-11-03 03:46:42,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:42,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:46:42,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:42,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:46:42,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:46:42,945 INFO L87 Difference]: Start difference. First operand 253 states and 359 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:43,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:43,417 INFO L93 Difference]: Finished difference Result 1006 states and 1427 transitions. [2022-11-03 03:46:43,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:46:43,418 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:46:43,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:43,420 INFO L225 Difference]: With dead ends: 1006 [2022-11-03 03:46:43,420 INFO L226 Difference]: Without dead ends: 755 [2022-11-03 03:46:43,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:46:43,421 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 1993 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1993 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:43,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1993 Valid, 1262 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:46:43,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2022-11-03 03:46:43,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 255. [2022-11-03 03:46:43,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.421259842519685) internal successors, (361), 254 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:43,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 361 transitions. [2022-11-03 03:46:43,437 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 361 transitions. Word has length 109 [2022-11-03 03:46:43,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:43,439 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 361 transitions. [2022-11-03 03:46:43,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:43,439 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 361 transitions. [2022-11-03 03:46:43,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:46:43,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:43,441 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:43,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:43,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:43,656 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:43,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:43,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1187553715, now seen corresponding path program 1 times [2022-11-03 03:46:43,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:43,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1608904066] [2022-11-03 03:46:43,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:43,658 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:43,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:43,659 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:43,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-03 03:46:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:44,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-03 03:46:44,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:44,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:46:44,902 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:44,902 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:44,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1608904066] [2022-11-03 03:46:44,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1608904066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:44,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:44,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:46:44,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695743072] [2022-11-03 03:46:44,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:44,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:46:44,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:44,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:46:44,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:46:44,905 INFO L87 Difference]: Start difference. First operand 255 states and 361 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:45,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:45,365 INFO L93 Difference]: Finished difference Result 1010 states and 1430 transitions. [2022-11-03 03:46:45,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:46:45,366 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:46:45,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:45,369 INFO L225 Difference]: With dead ends: 1010 [2022-11-03 03:46:45,370 INFO L226 Difference]: Without dead ends: 757 [2022-11-03 03:46:45,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:46:45,371 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 1987 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1987 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:45,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1987 Valid, 1289 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:46:45,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2022-11-03 03:46:45,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 257. [2022-11-03 03:46:45,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.41796875) internal successors, (363), 256 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:45,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 363 transitions. [2022-11-03 03:46:45,394 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 363 transitions. Word has length 109 [2022-11-03 03:46:45,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:45,394 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 363 transitions. [2022-11-03 03:46:45,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:45,395 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 363 transitions. [2022-11-03 03:46:45,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:46:45,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:45,396 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:45,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:45,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:45,613 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:45,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:45,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1866825969, now seen corresponding path program 1 times [2022-11-03 03:46:45,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:45,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075628198] [2022-11-03 03:46:45,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:45,615 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:45,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:45,616 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:45,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-03 03:46:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:46,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 03:46:46,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:46,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:46:46,481 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:46,481 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:46,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2075628198] [2022-11-03 03:46:46,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2075628198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:46,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:46,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:46:46,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168400129] [2022-11-03 03:46:46,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:46,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:46:46,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:46,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:46:46,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:46:46,484 INFO L87 Difference]: Start difference. First operand 257 states and 363 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:46,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:46,798 INFO L93 Difference]: Finished difference Result 840 states and 1175 transitions. [2022-11-03 03:46:46,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:46:46,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:46:46,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:46,801 INFO L225 Difference]: With dead ends: 840 [2022-11-03 03:46:46,801 INFO L226 Difference]: Without dead ends: 585 [2022-11-03 03:46:46,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:46:46,802 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 572 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:46,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 1684 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 15 Unchecked, 0.2s Time] [2022-11-03 03:46:46,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-11-03 03:46:46,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 331. [2022-11-03 03:46:46,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 1.3757575757575757) internal successors, (454), 330 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:46,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 454 transitions. [2022-11-03 03:46:46,817 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 454 transitions. Word has length 109 [2022-11-03 03:46:46,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:46,817 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 454 transitions. [2022-11-03 03:46:46,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:46,817 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 454 transitions. [2022-11-03 03:46:46,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:46:46,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:46,819 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:46,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-11-03 03:46:47,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:47,035 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:47,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:47,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1665002035, now seen corresponding path program 1 times [2022-11-03 03:46:47,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:47,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818037714] [2022-11-03 03:46:47,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:47,036 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:47,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:47,037 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:47,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-03 03:46:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:47,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:46:47,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:47,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:46:47,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:47,813 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:47,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [818037714] [2022-11-03 03:46:47,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [818037714] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:47,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:47,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:46:47,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956078461] [2022-11-03 03:46:47,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:47,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:46:47,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:47,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:46:47,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:46:47,818 INFO L87 Difference]: Start difference. First operand 331 states and 454 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:48,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:48,185 INFO L93 Difference]: Finished difference Result 1001 states and 1412 transitions. [2022-11-03 03:46:48,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:46:48,186 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:46:48,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:48,188 INFO L225 Difference]: With dead ends: 1001 [2022-11-03 03:46:48,188 INFO L226 Difference]: Without dead ends: 746 [2022-11-03 03:46:48,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-03 03:46:48,189 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 1872 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1872 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:48,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1872 Valid, 1298 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:46:48,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-11-03 03:46:48,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 335. [2022-11-03 03:46:48,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 1.374251497005988) internal successors, (459), 334 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:48,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 459 transitions. [2022-11-03 03:46:48,206 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 459 transitions. Word has length 109 [2022-11-03 03:46:48,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:48,207 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 459 transitions. [2022-11-03 03:46:48,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:48,207 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 459 transitions. [2022-11-03 03:46:48,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:46:48,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:48,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:48,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:48,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:48,424 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:48,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:48,425 INFO L85 PathProgramCache]: Analyzing trace with hash 2098731121, now seen corresponding path program 1 times [2022-11-03 03:46:48,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:48,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1225928450] [2022-11-03 03:46:48,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:48,426 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:48,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:48,427 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:48,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-03 03:46:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:48,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:46:48,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:49,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:46:49,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:49,138 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:49,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1225928450] [2022-11-03 03:46:49,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1225928450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:49,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:49,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:46:49,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248963975] [2022-11-03 03:46:49,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:49,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:46:49,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:49,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:46:49,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:46:49,140 INFO L87 Difference]: Start difference. First operand 335 states and 459 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:49,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:49,616 INFO L93 Difference]: Finished difference Result 1110 states and 1553 transitions. [2022-11-03 03:46:49,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:46:49,616 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:46:49,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:49,620 INFO L225 Difference]: With dead ends: 1110 [2022-11-03 03:46:49,620 INFO L226 Difference]: Without dead ends: 851 [2022-11-03 03:46:49,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:46:49,622 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 2301 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2301 SdHoareTripleChecker+Valid, 1885 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:49,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2301 Valid, 1885 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:46:49,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-11-03 03:46:49,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 337. [2022-11-03 03:46:49,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 1.3720238095238095) internal successors, (461), 336 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:49,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 461 transitions. [2022-11-03 03:46:49,639 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 461 transitions. Word has length 109 [2022-11-03 03:46:49,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:49,640 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 461 transitions. [2022-11-03 03:46:49,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:49,640 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 461 transitions. [2022-11-03 03:46:49,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:46:49,641 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:49,641 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:49,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:49,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:49,857 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:49,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:49,857 INFO L85 PathProgramCache]: Analyzing trace with hash 2139405871, now seen corresponding path program 1 times [2022-11-03 03:46:49,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:49,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [467785809] [2022-11-03 03:46:49,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:49,858 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:49,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:49,859 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:49,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-03 03:46:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:50,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 03:46:50,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:50,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:46:50,823 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:50,823 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:50,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [467785809] [2022-11-03 03:46:50,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [467785809] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:50,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:50,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:46:50,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359910045] [2022-11-03 03:46:50,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:50,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:46:50,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:50,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:46:50,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:46:50,825 INFO L87 Difference]: Start difference. First operand 337 states and 461 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:51,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:51,488 INFO L93 Difference]: Finished difference Result 1114 states and 1556 transitions. [2022-11-03 03:46:51,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:46:51,488 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:46:51,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:51,491 INFO L225 Difference]: With dead ends: 1114 [2022-11-03 03:46:51,492 INFO L226 Difference]: Without dead ends: 853 [2022-11-03 03:46:51,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:46:51,493 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 2291 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2291 SdHoareTripleChecker+Valid, 1815 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:51,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2291 Valid, 1815 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:46:51,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2022-11-03 03:46:51,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 339. [2022-11-03 03:46:51,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 1.3698224852071006) internal successors, (463), 338 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:51,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 463 transitions. [2022-11-03 03:46:51,510 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 463 transitions. Word has length 109 [2022-11-03 03:46:51,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:51,511 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 463 transitions. [2022-11-03 03:46:51,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:51,511 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 463 transitions. [2022-11-03 03:46:51,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:46:51,512 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:51,513 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:51,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:51,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:51,731 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:51,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:51,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1279542419, now seen corresponding path program 1 times [2022-11-03 03:46:51,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:51,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710115025] [2022-11-03 03:46:51,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:51,732 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:51,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:51,734 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:51,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-03 03:46:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:52,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:46:52,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:52,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:46:52,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:52,442 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:52,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710115025] [2022-11-03 03:46:52,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1710115025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:52,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:52,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:46:52,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084404985] [2022-11-03 03:46:52,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:52,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:46:52,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:52,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:46:52,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:46:52,444 INFO L87 Difference]: Start difference. First operand 339 states and 463 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:52,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:52,930 INFO L93 Difference]: Finished difference Result 1118 states and 1559 transitions. [2022-11-03 03:46:52,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:46:52,931 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:46:52,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:52,935 INFO L225 Difference]: With dead ends: 1118 [2022-11-03 03:46:52,935 INFO L226 Difference]: Without dead ends: 855 [2022-11-03 03:46:52,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:46:52,936 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 2287 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2287 SdHoareTripleChecker+Valid, 1891 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:52,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2287 Valid, 1891 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:46:52,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2022-11-03 03:46:52,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 341. [2022-11-03 03:46:52,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 1.3676470588235294) internal successors, (465), 340 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:52,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 465 transitions. [2022-11-03 03:46:52,954 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 465 transitions. Word has length 109 [2022-11-03 03:46:52,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:52,954 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 465 transitions. [2022-11-03 03:46:52,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:52,954 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 465 transitions. [2022-11-03 03:46:52,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:46:52,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:52,956 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:52,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:53,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:53,172 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:53,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:53,172 INFO L85 PathProgramCache]: Analyzing trace with hash 258797611, now seen corresponding path program 1 times [2022-11-03 03:46:53,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:53,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92280803] [2022-11-03 03:46:53,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:53,173 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:53,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:53,174 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:53,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-03 03:46:53,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:53,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:46:53,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:53,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:46:53,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:53,898 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:53,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92280803] [2022-11-03 03:46:53,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [92280803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:53,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:53,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:46:53,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273871437] [2022-11-03 03:46:53,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:53,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:46:53,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:53,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:46:53,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:46:53,900 INFO L87 Difference]: Start difference. First operand 341 states and 465 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:54,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:54,405 INFO L93 Difference]: Finished difference Result 1122 states and 1562 transitions. [2022-11-03 03:46:54,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:46:54,409 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:46:54,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:54,411 INFO L225 Difference]: With dead ends: 1122 [2022-11-03 03:46:54,411 INFO L226 Difference]: Without dead ends: 857 [2022-11-03 03:46:54,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:46:54,413 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 2280 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2280 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:54,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2280 Valid, 1894 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:46:54,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2022-11-03 03:46:54,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 343. [2022-11-03 03:46:54,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 1.3654970760233918) internal successors, (467), 342 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:54,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 467 transitions. [2022-11-03 03:46:54,430 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 467 transitions. Word has length 109 [2022-11-03 03:46:54,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:54,430 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 467 transitions. [2022-11-03 03:46:54,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:54,431 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 467 transitions. [2022-11-03 03:46:54,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:46:54,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:54,432 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:54,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:54,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:54,648 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:54,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:54,648 INFO L85 PathProgramCache]: Analyzing trace with hash -222282647, now seen corresponding path program 1 times [2022-11-03 03:46:54,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:54,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [861112680] [2022-11-03 03:46:54,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:54,649 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:54,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:54,650 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:54,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-03 03:46:55,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:55,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 03:46:55,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:55,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:46:55,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:55,649 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:55,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [861112680] [2022-11-03 03:46:55,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [861112680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:55,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:55,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:46:55,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090433412] [2022-11-03 03:46:55,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:55,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:46:55,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:55,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:46:55,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:46:55,652 INFO L87 Difference]: Start difference. First operand 343 states and 467 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:56,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:56,292 INFO L93 Difference]: Finished difference Result 1126 states and 1565 transitions. [2022-11-03 03:46:56,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:46:56,299 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:46:56,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:56,302 INFO L225 Difference]: With dead ends: 1126 [2022-11-03 03:46:56,302 INFO L226 Difference]: Without dead ends: 859 [2022-11-03 03:46:56,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:46:56,303 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 2270 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2270 SdHoareTripleChecker+Valid, 1824 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:56,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2270 Valid, 1824 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:46:56,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2022-11-03 03:46:56,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 345. [2022-11-03 03:46:56,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 1.3633720930232558) internal successors, (469), 344 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:56,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 469 transitions. [2022-11-03 03:46:56,327 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 469 transitions. Word has length 109 [2022-11-03 03:46:56,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:56,327 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 469 transitions. [2022-11-03 03:46:56,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:56,327 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 469 transitions. [2022-11-03 03:46:56,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:46:56,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:56,328 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:56,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:56,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:56,542 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:56,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:56,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1716879399, now seen corresponding path program 1 times [2022-11-03 03:46:56,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:56,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [665699063] [2022-11-03 03:46:56,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:56,544 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:56,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:56,544 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:56,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-03 03:46:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:57,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:46:57,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:57,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:46:57,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:57,325 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:57,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [665699063] [2022-11-03 03:46:57,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [665699063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:57,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:57,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:46:57,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605970737] [2022-11-03 03:46:57,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:57,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:46:57,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:57,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:46:57,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:46:57,328 INFO L87 Difference]: Start difference. First operand 345 states and 469 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:57,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:57,647 INFO L93 Difference]: Finished difference Result 1029 states and 1436 transitions. [2022-11-03 03:46:57,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:46:57,647 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:46:57,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:57,649 INFO L225 Difference]: With dead ends: 1029 [2022-11-03 03:46:57,649 INFO L226 Difference]: Without dead ends: 760 [2022-11-03 03:46:57,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-03 03:46:57,650 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 1834 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1834 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:57,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1834 Valid, 1318 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:46:57,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-11-03 03:46:57,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 349. [2022-11-03 03:46:57,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.3620689655172413) internal successors, (474), 348 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:57,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 474 transitions. [2022-11-03 03:46:57,667 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 474 transitions. Word has length 109 [2022-11-03 03:46:57,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:57,667 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 474 transitions. [2022-11-03 03:46:57,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:57,667 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 474 transitions. [2022-11-03 03:46:57,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:46:57,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:57,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:57,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:57,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:57,884 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:57,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:57,884 INFO L85 PathProgramCache]: Analyzing trace with hash -332508443, now seen corresponding path program 1 times [2022-11-03 03:46:57,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:57,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1192633426] [2022-11-03 03:46:57,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:57,886 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:57,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:57,887 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:57,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-03 03:46:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:58,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:46:58,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:58,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:46:58,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:58,630 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:58,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1192633426] [2022-11-03 03:46:58,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1192633426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:58,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:58,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:46:58,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957040447] [2022-11-03 03:46:58,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:58,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:46:58,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:58,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:46:58,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:46:58,632 INFO L87 Difference]: Start difference. First operand 349 states and 474 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:59,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:59,120 INFO L93 Difference]: Finished difference Result 1166 states and 1613 transitions. [2022-11-03 03:46:59,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:46:59,120 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:46:59,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:59,123 INFO L225 Difference]: With dead ends: 1166 [2022-11-03 03:46:59,123 INFO L226 Difference]: Without dead ends: 893 [2022-11-03 03:46:59,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:46:59,124 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 2314 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2314 SdHoareTripleChecker+Valid, 1905 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:59,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2314 Valid, 1905 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:46:59,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2022-11-03 03:46:59,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 351. [2022-11-03 03:46:59,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 1.36) internal successors, (476), 350 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:59,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 476 transitions. [2022-11-03 03:46:59,148 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 476 transitions. Word has length 109 [2022-11-03 03:46:59,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:59,149 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 476 transitions. [2022-11-03 03:46:59,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:59,149 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 476 transitions. [2022-11-03 03:46:59,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:46:59,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:59,150 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:59,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-11-03 03:46:59,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:59,359 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:59,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:59,359 INFO L85 PathProgramCache]: Analyzing trace with hash -84361949, now seen corresponding path program 1 times [2022-11-03 03:46:59,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:59,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [110601815] [2022-11-03 03:46:59,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:59,361 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:59,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:59,361 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:59,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-03 03:46:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:59,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 03:46:59,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:00,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:47:00,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:47:00,382 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:47:00,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [110601815] [2022-11-03 03:47:00,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [110601815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:00,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:00,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:47:00,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987123423] [2022-11-03 03:47:00,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:00,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:47:00,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:47:00,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:47:00,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:47:00,385 INFO L87 Difference]: Start difference. First operand 351 states and 476 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:01,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:01,013 INFO L93 Difference]: Finished difference Result 1170 states and 1616 transitions. [2022-11-03 03:47:01,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:47:01,013 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:47:01,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:01,016 INFO L225 Difference]: With dead ends: 1170 [2022-11-03 03:47:01,016 INFO L226 Difference]: Without dead ends: 895 [2022-11-03 03:47:01,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:47:01,016 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 2304 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2304 SdHoareTripleChecker+Valid, 1835 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:01,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2304 Valid, 1835 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:47:01,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2022-11-03 03:47:01,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 353. [2022-11-03 03:47:01,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 1.3579545454545454) internal successors, (478), 352 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:01,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 478 transitions. [2022-11-03 03:47:01,034 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 478 transitions. Word has length 109 [2022-11-03 03:47:01,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:01,035 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 478 transitions. [2022-11-03 03:47:01,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:01,035 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 478 transitions. [2022-11-03 03:47:01,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:47:01,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:01,036 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:01,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-03 03:47:01,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:47:01,251 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:01,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:01,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1456169247, now seen corresponding path program 1 times [2022-11-03 03:47:01,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:47:01,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123266902] [2022-11-03 03:47:01,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:01,253 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:47:01,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:47:01,254 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:47:01,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-03 03:47:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:01,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:47:01,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:01,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:47:01,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:47:01,958 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:47:01,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123266902] [2022-11-03 03:47:01,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123266902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:01,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:01,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:47:01,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234669347] [2022-11-03 03:47:01,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:01,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:47:01,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:47:01,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:47:01,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:47:01,960 INFO L87 Difference]: Start difference. First operand 353 states and 478 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:02,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:02,285 INFO L93 Difference]: Finished difference Result 1043 states and 1448 transitions. [2022-11-03 03:47:02,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:47:02,286 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:47:02,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:02,287 INFO L225 Difference]: With dead ends: 1043 [2022-11-03 03:47:02,288 INFO L226 Difference]: Without dead ends: 766 [2022-11-03 03:47:02,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-03 03:47:02,288 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 1816 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1816 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:02,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1816 Valid, 1326 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:47:02,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-11-03 03:47:02,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 355. [2022-11-03 03:47:02,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.3559322033898304) internal successors, (480), 354 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:02,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 480 transitions. [2022-11-03 03:47:02,306 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 480 transitions. Word has length 109 [2022-11-03 03:47:02,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:02,306 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 480 transitions. [2022-11-03 03:47:02,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:02,306 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 480 transitions. [2022-11-03 03:47:02,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:47:02,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:02,307 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:02,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-03 03:47:02,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:47:02,523 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:02,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:02,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1809438751, now seen corresponding path program 1 times [2022-11-03 03:47:02,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:47:02,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [605263566] [2022-11-03 03:47:02,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:02,525 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:47:02,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:47:02,526 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:47:02,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-03 03:47:02,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:03,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:47:03,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:03,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:47:03,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:47:03,338 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:47:03,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [605263566] [2022-11-03 03:47:03,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [605263566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:03,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:03,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:47:03,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170794881] [2022-11-03 03:47:03,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:03,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:47:03,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:47:03,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:47:03,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:47:03,340 INFO L87 Difference]: Start difference. First operand 355 states and 480 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:03,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:03,717 INFO L93 Difference]: Finished difference Result 1047 states and 1451 transitions. [2022-11-03 03:47:03,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:47:03,717 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:47:03,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:03,719 INFO L225 Difference]: With dead ends: 1047 [2022-11-03 03:47:03,719 INFO L226 Difference]: Without dead ends: 768 [2022-11-03 03:47:03,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-03 03:47:03,720 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 1810 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1810 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:03,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1810 Valid, 1328 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:47:03,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2022-11-03 03:47:03,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 357. [2022-11-03 03:47:03,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 1.353932584269663) internal successors, (482), 356 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:03,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 482 transitions. [2022-11-03 03:47:03,735 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 482 transitions. Word has length 109 [2022-11-03 03:47:03,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:03,736 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 482 transitions. [2022-11-03 03:47:03,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:03,736 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 482 transitions. [2022-11-03 03:47:03,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:47:03,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:03,737 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:03,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-11-03 03:47:03,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:47:03,951 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:03,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:03,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1415071965, now seen corresponding path program 1 times [2022-11-03 03:47:03,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:47:03,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1820356059] [2022-11-03 03:47:03,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:03,952 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:47:03,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:47:03,953 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:47:03,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-03 03:47:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:04,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 03:47:04,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:04,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:47:04,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:47:04,997 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:47:04,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1820356059] [2022-11-03 03:47:04,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1820356059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:04,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:04,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:47:04,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090226742] [2022-11-03 03:47:04,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:04,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:47:04,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:47:04,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:47:04,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:47:04,999 INFO L87 Difference]: Start difference. First operand 357 states and 482 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:05,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:05,664 INFO L93 Difference]: Finished difference Result 1194 states and 1640 transitions. [2022-11-03 03:47:05,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:47:05,665 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:47:05,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:05,667 INFO L225 Difference]: With dead ends: 1194 [2022-11-03 03:47:05,668 INFO L226 Difference]: Without dead ends: 913 [2022-11-03 03:47:05,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:47:05,669 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 2307 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2307 SdHoareTripleChecker+Valid, 1842 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:05,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2307 Valid, 1842 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:47:05,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2022-11-03 03:47:05,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 359. [2022-11-03 03:47:05,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.3519553072625698) internal successors, (484), 358 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:05,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 484 transitions. [2022-11-03 03:47:05,682 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 484 transitions. Word has length 109 [2022-11-03 03:47:05,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:05,683 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 484 transitions. [2022-11-03 03:47:05,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:05,683 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 484 transitions. [2022-11-03 03:47:05,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:47:05,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:05,684 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:05,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-03 03:47:05,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:47:05,900 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:05,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:05,900 INFO L85 PathProgramCache]: Analyzing trace with hash -828911333, now seen corresponding path program 1 times [2022-11-03 03:47:05,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:47:05,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [12969473] [2022-11-03 03:47:05,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:05,901 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:47:05,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:47:05,902 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:47:05,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-03 03:47:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:06,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-03 03:47:06,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:07,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:47:07,466 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:47:07,466 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:47:07,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [12969473] [2022-11-03 03:47:07,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [12969473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:07,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:07,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:47:07,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020629080] [2022-11-03 03:47:07,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:07,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:47:07,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:47:07,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:47:07,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:47:07,467 INFO L87 Difference]: Start difference. First operand 359 states and 484 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:08,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:08,176 INFO L93 Difference]: Finished difference Result 1186 states and 1628 transitions. [2022-11-03 03:47:08,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:47:08,177 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:47:08,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:08,180 INFO L225 Difference]: With dead ends: 1186 [2022-11-03 03:47:08,180 INFO L226 Difference]: Without dead ends: 903 [2022-11-03 03:47:08,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:47:08,181 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 2276 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2276 SdHoareTripleChecker+Valid, 1872 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:08,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2276 Valid, 1872 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:47:08,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2022-11-03 03:47:08,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 361. [2022-11-03 03:47:08,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 1.35) internal successors, (486), 360 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:08,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 486 transitions. [2022-11-03 03:47:08,194 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 486 transitions. Word has length 109 [2022-11-03 03:47:08,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:08,194 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 486 transitions. [2022-11-03 03:47:08,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:08,194 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 486 transitions. [2022-11-03 03:47:08,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:47:08,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:08,195 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:08,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2022-11-03 03:47:08,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:47:08,396 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:08,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:08,396 INFO L85 PathProgramCache]: Analyzing trace with hash -554151719, now seen corresponding path program 1 times [2022-11-03 03:47:08,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:47:08,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [551105343] [2022-11-03 03:47:08,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:08,397 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:47:08,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:47:08,398 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:47:08,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-03 03:47:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:08,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-03 03:47:08,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:11,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:47:11,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:47:11,079 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:47:11,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [551105343] [2022-11-03 03:47:11,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [551105343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:11,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:11,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:47:11,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010427066] [2022-11-03 03:47:11,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:11,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:47:11,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:47:11,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:47:11,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:47:11,082 INFO L87 Difference]: Start difference. First operand 361 states and 486 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:11,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:11,953 INFO L93 Difference]: Finished difference Result 1162 states and 1595 transitions. [2022-11-03 03:47:11,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:47:11,953 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:47:11,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:11,956 INFO L225 Difference]: With dead ends: 1162 [2022-11-03 03:47:11,956 INFO L226 Difference]: Without dead ends: 877 [2022-11-03 03:47:11,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:47:11,957 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 2212 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2212 SdHoareTripleChecker+Valid, 1875 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:11,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2212 Valid, 1875 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:47:11,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2022-11-03 03:47:11,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 363. [2022-11-03 03:47:11,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 1.3480662983425415) internal successors, (488), 362 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:11,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 488 transitions. [2022-11-03 03:47:11,975 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 488 transitions. Word has length 109 [2022-11-03 03:47:11,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:11,976 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 488 transitions. [2022-11-03 03:47:11,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:11,976 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 488 transitions. [2022-11-03 03:47:11,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:47:11,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:11,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:11,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-03 03:47:12,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:47:12,193 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:12,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:12,193 INFO L85 PathProgramCache]: Analyzing trace with hash -531519465, now seen corresponding path program 1 times [2022-11-03 03:47:12,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:47:12,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1087960813] [2022-11-03 03:47:12,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:12,194 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:47:12,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:47:12,195 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:47:12,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-03 03:47:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:12,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 03:47:12,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:13,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:47:13,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:47:13,067 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:47:13,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1087960813] [2022-11-03 03:47:13,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1087960813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:13,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:13,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:47:13,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182031692] [2022-11-03 03:47:13,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:13,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:47:13,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:47:13,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:47:13,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:47:13,069 INFO L87 Difference]: Start difference. First operand 363 states and 488 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:13,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:13,348 INFO L93 Difference]: Finished difference Result 968 states and 1310 transitions. [2022-11-03 03:47:13,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:47:13,348 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:47:13,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:13,351 INFO L225 Difference]: With dead ends: 968 [2022-11-03 03:47:13,351 INFO L226 Difference]: Without dead ends: 681 [2022-11-03 03:47:13,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:47:13,352 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 525 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 1873 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:13,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 1873 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 16 Unchecked, 0.2s Time] [2022-11-03 03:47:13,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2022-11-03 03:47:13,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 395. [2022-11-03 03:47:13,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 1.3223350253807107) internal successors, (521), 394 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:13,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 521 transitions. [2022-11-03 03:47:13,378 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 521 transitions. Word has length 109 [2022-11-03 03:47:13,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:13,379 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 521 transitions. [2022-11-03 03:47:13,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:13,379 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 521 transitions. [2022-11-03 03:47:13,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:47:13,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:13,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:13,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2022-11-03 03:47:13,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:47:13,580 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:13,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:13,580 INFO L85 PathProgramCache]: Analyzing trace with hash -22046375, now seen corresponding path program 1 times [2022-11-03 03:47:13,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:47:13,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [109347247] [2022-11-03 03:47:13,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:13,581 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:47:13,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:47:13,582 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:47:13,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-03 03:47:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:14,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 03:47:14,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:14,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:47:14,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:47:14,382 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:47:14,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [109347247] [2022-11-03 03:47:14,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [109347247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:14,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:14,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:47:14,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268725308] [2022-11-03 03:47:14,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:14,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:47:14,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:47:14,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:47:14,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:47:14,384 INFO L87 Difference]: Start difference. First operand 395 states and 521 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:14,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:14,790 INFO L93 Difference]: Finished difference Result 1316 states and 1794 transitions. [2022-11-03 03:47:14,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:47:14,791 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:47:14,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:14,794 INFO L225 Difference]: With dead ends: 1316 [2022-11-03 03:47:14,794 INFO L226 Difference]: Without dead ends: 1029 [2022-11-03 03:47:14,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:47:14,796 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 1892 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1892 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:14,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1892 Valid, 1613 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:47:14,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2022-11-03 03:47:14,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 397. [2022-11-03 03:47:14,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 1.3207070707070707) internal successors, (523), 396 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:14,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 523 transitions. [2022-11-03 03:47:14,814 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 523 transitions. Word has length 109 [2022-11-03 03:47:14,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:14,815 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 523 transitions. [2022-11-03 03:47:14,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:14,815 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 523 transitions. [2022-11-03 03:47:14,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:47:14,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:14,815 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:14,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2022-11-03 03:47:15,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:47:15,016 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:15,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:15,016 INFO L85 PathProgramCache]: Analyzing trace with hash -156059881, now seen corresponding path program 1 times [2022-11-03 03:47:15,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:47:15,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1181056653] [2022-11-03 03:47:15,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:15,017 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:47:15,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:47:15,021 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:47:15,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-03 03:47:15,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:15,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-03 03:47:15,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:16,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:47:16,401 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:47:16,401 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:47:16,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1181056653] [2022-11-03 03:47:16,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1181056653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:16,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:16,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:47:16,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144278832] [2022-11-03 03:47:16,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:16,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:47:16,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:47:16,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:47:16,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:47:16,403 INFO L87 Difference]: Start difference. First operand 397 states and 523 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:16,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:16,879 INFO L93 Difference]: Finished difference Result 1320 states and 1797 transitions. [2022-11-03 03:47:16,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:47:16,880 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:47:16,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:16,883 INFO L225 Difference]: With dead ends: 1320 [2022-11-03 03:47:16,883 INFO L226 Difference]: Without dead ends: 1031 [2022-11-03 03:47:16,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:47:16,884 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 1886 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1886 SdHoareTripleChecker+Valid, 1576 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:16,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1886 Valid, 1576 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:47:16,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2022-11-03 03:47:16,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 399. [2022-11-03 03:47:16,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 1.3190954773869348) internal successors, (525), 398 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:16,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 525 transitions. [2022-11-03 03:47:16,903 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 525 transitions. Word has length 109 [2022-11-03 03:47:16,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:16,904 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 525 transitions. [2022-11-03 03:47:16,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:16,904 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 525 transitions. [2022-11-03 03:47:16,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:47:16,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:16,905 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:16,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2022-11-03 03:47:17,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:47:17,115 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:17,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:17,115 INFO L85 PathProgramCache]: Analyzing trace with hash 62794837, now seen corresponding path program 1 times [2022-11-03 03:47:17,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:47:17,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2036889430] [2022-11-03 03:47:17,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:17,116 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:47:17,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:47:17,117 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:47:17,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-03 03:47:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:17,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:47:17,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:17,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:47:17,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:47:17,684 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:47:17,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2036889430] [2022-11-03 03:47:17,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2036889430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:17,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:17,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:47:17,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466976491] [2022-11-03 03:47:17,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:17,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:47:17,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:47:17,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:47:17,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:47:17,686 INFO L87 Difference]: Start difference. First operand 399 states and 525 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:17,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:17,755 INFO L93 Difference]: Finished difference Result 1167 states and 1597 transitions. [2022-11-03 03:47:17,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:47:17,756 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:47:17,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:17,758 INFO L225 Difference]: With dead ends: 1167 [2022-11-03 03:47:17,758 INFO L226 Difference]: Without dead ends: 876 [2022-11-03 03:47:17,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:47:17,759 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 684 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:17,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 1190 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:47:17,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-11-03 03:47:17,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 471. [2022-11-03 03:47:17,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 470 states have (on average 1.3404255319148937) internal successors, (630), 470 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:17,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 630 transitions. [2022-11-03 03:47:17,774 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 630 transitions. Word has length 109 [2022-11-03 03:47:17,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:17,774 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 630 transitions. [2022-11-03 03:47:17,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:17,774 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 630 transitions. [2022-11-03 03:47:17,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:47:17,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:17,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:17,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2022-11-03 03:47:17,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:47:17,991 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:17,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:17,991 INFO L85 PathProgramCache]: Analyzing trace with hash -754853613, now seen corresponding path program 1 times [2022-11-03 03:47:17,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:47:17,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [131737168] [2022-11-03 03:47:17,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:17,992 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:47:17,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:47:17,993 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:47:17,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-03 03:47:18,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:18,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:47:18,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:18,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:47:18,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:47:18,563 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:47:18,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [131737168] [2022-11-03 03:47:18,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [131737168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:18,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:18,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:47:18,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906116997] [2022-11-03 03:47:18,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:18,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:47:18,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:47:18,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:47:18,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:47:18,565 INFO L87 Difference]: Start difference. First operand 471 states and 630 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:18,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:18,637 INFO L93 Difference]: Finished difference Result 1167 states and 1596 transitions. [2022-11-03 03:47:18,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:47:18,638 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:47:18,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:18,640 INFO L225 Difference]: With dead ends: 1167 [2022-11-03 03:47:18,640 INFO L226 Difference]: Without dead ends: 876 [2022-11-03 03:47:18,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:47:18,641 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 678 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:18,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1189 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:47:18,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-11-03 03:47:18,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 473. [2022-11-03 03:47:18,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 1.3389830508474576) internal successors, (632), 472 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:18,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 632 transitions. [2022-11-03 03:47:18,659 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 632 transitions. Word has length 109 [2022-11-03 03:47:18,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:18,659 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 632 transitions. [2022-11-03 03:47:18,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:18,659 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 632 transitions. [2022-11-03 03:47:18,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:47:18,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:18,660 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:18,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2022-11-03 03:47:18,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:47:18,875 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:18,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:18,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1545968977, now seen corresponding path program 1 times [2022-11-03 03:47:18,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:47:18,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499172993] [2022-11-03 03:47:18,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:18,877 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:47:18,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:47:18,878 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:47:18,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-03 03:47:19,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:19,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:47:19,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:19,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:47:19,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:47:19,502 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:47:19,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [499172993] [2022-11-03 03:47:19,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [499172993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:19,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:19,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:47:19,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667239259] [2022-11-03 03:47:19,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:19,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:47:19,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:47:19,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:47:19,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:47:19,504 INFO L87 Difference]: Start difference. First operand 473 states and 632 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:19,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:19,571 INFO L93 Difference]: Finished difference Result 1167 states and 1595 transitions. [2022-11-03 03:47:19,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:47:19,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:47:19,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:19,573 INFO L225 Difference]: With dead ends: 1167 [2022-11-03 03:47:19,573 INFO L226 Difference]: Without dead ends: 876 [2022-11-03 03:47:19,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:47:19,574 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 657 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:19,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 1188 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:47:19,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-11-03 03:47:19,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 481. [2022-11-03 03:47:19,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.3395833333333333) internal successors, (643), 480 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:19,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 643 transitions. [2022-11-03 03:47:19,598 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 643 transitions. Word has length 109 [2022-11-03 03:47:19,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:19,598 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 643 transitions. [2022-11-03 03:47:19,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:19,599 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 643 transitions. [2022-11-03 03:47:19,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:47:19,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:19,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:19,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-03 03:47:19,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:47:19,815 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:19,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:19,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1152941967, now seen corresponding path program 1 times [2022-11-03 03:47:19,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:47:19,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1049799704] [2022-11-03 03:47:19,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:19,817 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:47:19,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:47:19,819 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:47:19,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-03 03:47:20,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:20,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:47:20,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:20,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:47:20,458 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:47:20,458 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:47:20,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1049799704] [2022-11-03 03:47:20,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1049799704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:20,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:20,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:47:20,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244544065] [2022-11-03 03:47:20,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:20,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:47:20,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:47:20,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:47:20,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:47:20,460 INFO L87 Difference]: Start difference. First operand 481 states and 643 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:20,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:20,770 INFO L93 Difference]: Finished difference Result 1348 states and 1829 transitions. [2022-11-03 03:47:20,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:47:20,771 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:47:20,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:20,772 INFO L225 Difference]: With dead ends: 1348 [2022-11-03 03:47:20,772 INFO L226 Difference]: Without dead ends: 1057 [2022-11-03 03:47:20,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:47:20,773 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 922 mSDsluCounter, 2171 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 2606 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:20,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 2606 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 30 Unchecked, 0.3s Time] [2022-11-03 03:47:20,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2022-11-03 03:47:20,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 489. [2022-11-03 03:47:20,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 488 states have (on average 1.3381147540983607) internal successors, (653), 488 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:20,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 653 transitions. [2022-11-03 03:47:20,793 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 653 transitions. Word has length 109 [2022-11-03 03:47:20,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:20,794 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 653 transitions. [2022-11-03 03:47:20,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:20,794 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 653 transitions. [2022-11-03 03:47:20,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:47:20,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:20,795 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:20,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2022-11-03 03:47:21,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:47:21,011 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:21,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:21,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1210200269, now seen corresponding path program 1 times [2022-11-03 03:47:21,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:47:21,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2005729390] [2022-11-03 03:47:21,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:21,012 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:47:21,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:47:21,013 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:47:21,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-03 03:47:21,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:21,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 03:47:21,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:21,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:47:21,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:47:21,841 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:47:21,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2005729390] [2022-11-03 03:47:21,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2005729390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:21,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:21,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:47:21,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636189884] [2022-11-03 03:47:21,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:21,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:47:21,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:47:21,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:47:21,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:47:21,843 INFO L87 Difference]: Start difference. First operand 489 states and 653 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:22,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:22,202 INFO L93 Difference]: Finished difference Result 787 states and 1062 transitions. [2022-11-03 03:47:22,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:47:22,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-03 03:47:22,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:22,204 INFO L225 Difference]: With dead ends: 787 [2022-11-03 03:47:22,204 INFO L226 Difference]: Without dead ends: 785 [2022-11-03 03:47:22,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:47:22,204 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 787 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1305 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:22,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 1305 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:47:22,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2022-11-03 03:47:22,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 497. [2022-11-03 03:47:22,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 1.3387096774193548) internal successors, (664), 496 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:22,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 664 transitions. [2022-11-03 03:47:22,223 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 664 transitions. Word has length 109 [2022-11-03 03:47:22,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:22,223 INFO L495 AbstractCegarLoop]: Abstraction has 497 states and 664 transitions. [2022-11-03 03:47:22,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:22,224 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 664 transitions. [2022-11-03 03:47:22,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:47:22,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:22,226 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:22,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-03 03:47:22,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:47:22,439 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:22,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:22,439 INFO L85 PathProgramCache]: Analyzing trace with hash -303024265, now seen corresponding path program 1 times [2022-11-03 03:47:22,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:47:22,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652580243] [2022-11-03 03:47:22,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:22,441 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:47:22,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:47:22,442 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:47:22,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-03 03:47:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:23,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:47:23,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:23,391 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:47:23,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:47:23,391 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:47:23,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652580243] [2022-11-03 03:47:23,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [652580243] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:23,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:23,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:47:23,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729161220] [2022-11-03 03:47:23,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:23,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:47:23,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:47:23,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:47:23,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:47:23,393 INFO L87 Difference]: Start difference. First operand 497 states and 664 transitions. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:23,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:23,481 INFO L93 Difference]: Finished difference Result 1173 states and 1602 transitions. [2022-11-03 03:47:23,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:47:23,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:47:23,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:23,484 INFO L225 Difference]: With dead ends: 1173 [2022-11-03 03:47:23,484 INFO L226 Difference]: Without dead ends: 882 [2022-11-03 03:47:23,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:47:23,485 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 628 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:23,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [628 Valid, 1185 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:47:23,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2022-11-03 03:47:23,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 499. [2022-11-03 03:47:23,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 498 states have (on average 1.3373493975903614) internal successors, (666), 498 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:23,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 666 transitions. [2022-11-03 03:47:23,503 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 666 transitions. Word has length 310 [2022-11-03 03:47:23,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:23,504 INFO L495 AbstractCegarLoop]: Abstraction has 499 states and 666 transitions. [2022-11-03 03:47:23,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:23,504 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 666 transitions. [2022-11-03 03:47:23,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:47:23,505 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:23,506 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:23,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2022-11-03 03:47:23,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:47:23,727 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:23,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:23,728 INFO L85 PathProgramCache]: Analyzing trace with hash 2024138105, now seen corresponding path program 1 times [2022-11-03 03:47:23,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:47:23,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [768925279] [2022-11-03 03:47:23,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:23,730 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:47:23,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:47:23,731 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:47:23,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-03 03:47:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:24,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:47:24,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:24,738 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:47:24,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:47:24,738 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:47:24,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [768925279] [2022-11-03 03:47:24,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [768925279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:24,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:24,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:47:24,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248083073] [2022-11-03 03:47:24,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:24,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:47:24,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:47:24,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:47:24,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:47:24,740 INFO L87 Difference]: Start difference. First operand 499 states and 666 transitions. Second operand has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:25,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:25,063 INFO L93 Difference]: Finished difference Result 1356 states and 1838 transitions. [2022-11-03 03:47:25,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:47:25,064 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:47:25,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:25,065 INFO L225 Difference]: With dead ends: 1356 [2022-11-03 03:47:25,065 INFO L226 Difference]: Without dead ends: 1065 [2022-11-03 03:47:25,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:47:25,067 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 1173 mSDsluCounter, 1460 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 1908 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:25,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1173 Valid, 1908 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 28 Unchecked, 0.3s Time] [2022-11-03 03:47:25,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2022-11-03 03:47:25,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 509. [2022-11-03 03:47:25,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 508 states have (on average 1.3346456692913387) internal successors, (678), 508 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:25,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 678 transitions. [2022-11-03 03:47:25,088 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 678 transitions. Word has length 310 [2022-11-03 03:47:25,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:25,088 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 678 transitions. [2022-11-03 03:47:25,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:25,089 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 678 transitions. [2022-11-03 03:47:25,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:47:25,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:25,091 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:25,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2022-11-03 03:47:25,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:47:25,307 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:25,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:25,308 INFO L85 PathProgramCache]: Analyzing trace with hash 299295867, now seen corresponding path program 1 times [2022-11-03 03:47:25,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:47:25,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773140552] [2022-11-03 03:47:25,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:25,310 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:47:25,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:47:25,311 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:47:25,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-03 03:47:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:26,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:47:26,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:26,277 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:47:26,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:47:26,277 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:47:26,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [773140552] [2022-11-03 03:47:26,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [773140552] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:26,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:26,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:47:26,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686902217] [2022-11-03 03:47:26,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:26,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:47:26,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:47:26,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:47:26,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:47:26,279 INFO L87 Difference]: Start difference. First operand 509 states and 678 transitions. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:26,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:26,349 INFO L93 Difference]: Finished difference Result 1183 states and 1613 transitions. [2022-11-03 03:47:26,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:47:26,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:47:26,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:26,353 INFO L225 Difference]: With dead ends: 1183 [2022-11-03 03:47:26,353 INFO L226 Difference]: Without dead ends: 892 [2022-11-03 03:47:26,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:47:26,354 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 612 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:26,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 1184 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:47:26,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2022-11-03 03:47:26,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 515. [2022-11-03 03:47:26,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 514 states have (on average 1.3346303501945525) internal successors, (686), 514 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:26,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 686 transitions. [2022-11-03 03:47:26,380 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 686 transitions. Word has length 310 [2022-11-03 03:47:26,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:26,380 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 686 transitions. [2022-11-03 03:47:26,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:26,380 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 686 transitions. [2022-11-03 03:47:26,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:47:26,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:26,383 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:26,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-03 03:47:26,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:47:26,599 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:26,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:26,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1981826051, now seen corresponding path program 1 times [2022-11-03 03:47:26,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:47:26,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1545687143] [2022-11-03 03:47:26,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:26,602 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:47:26,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:47:26,603 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:47:26,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-03 03:47:27,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:27,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:47:27,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:27,686 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:47:27,686 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:47:27,686 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:47:27,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1545687143] [2022-11-03 03:47:27,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1545687143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:27,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:27,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:47:27,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125926462] [2022-11-03 03:47:27,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:27,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:47:27,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:47:27,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:47:27,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:47:27,691 INFO L87 Difference]: Start difference. First operand 515 states and 686 transitions. Second operand has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:27,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:27,929 INFO L93 Difference]: Finished difference Result 848 states and 1139 transitions. [2022-11-03 03:47:27,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:47:27,929 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:47:27,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:27,930 INFO L225 Difference]: With dead ends: 848 [2022-11-03 03:47:27,931 INFO L226 Difference]: Without dead ends: 557 [2022-11-03 03:47:27,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:47:27,931 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 79 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:27,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1427 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 44 Unchecked, 0.2s Time] [2022-11-03 03:47:27,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2022-11-03 03:47:27,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2022-11-03 03:47:27,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 556 states have (on average 1.329136690647482) internal successors, (739), 556 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:27,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 739 transitions. [2022-11-03 03:47:27,951 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 739 transitions. Word has length 310 [2022-11-03 03:47:27,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:27,951 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 739 transitions. [2022-11-03 03:47:27,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:27,952 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 739 transitions. [2022-11-03 03:47:27,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:47:27,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:27,954 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:27,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-11-03 03:47:28,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:47:28,176 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:28,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:28,176 INFO L85 PathProgramCache]: Analyzing trace with hash 98757627, now seen corresponding path program 1 times [2022-11-03 03:47:28,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:47:28,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [546495368] [2022-11-03 03:47:28,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:28,178 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:47:28,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:47:28,179 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:47:28,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-03 03:47:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:28,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:47:28,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:29,230 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:47:29,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:47:29,230 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:47:29,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [546495368] [2022-11-03 03:47:29,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [546495368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:29,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:29,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:47:29,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936797381] [2022-11-03 03:47:29,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:29,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:47:29,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:47:29,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:47:29,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:47:29,233 INFO L87 Difference]: Start difference. First operand 557 states and 739 transitions. Second operand has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:29,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:29,600 INFO L93 Difference]: Finished difference Result 1408 states and 1901 transitions. [2022-11-03 03:47:29,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:47:29,601 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:47:29,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:29,603 INFO L225 Difference]: With dead ends: 1408 [2022-11-03 03:47:29,603 INFO L226 Difference]: Without dead ends: 1117 [2022-11-03 03:47:29,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:47:29,604 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 889 mSDsluCounter, 2200 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 2656 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:29,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 2656 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 30 Unchecked, 0.3s Time] [2022-11-03 03:47:29,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2022-11-03 03:47:29,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 567. [2022-11-03 03:47:29,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 566 states have (on average 1.325088339222615) internal successors, (750), 566 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:29,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 750 transitions. [2022-11-03 03:47:29,626 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 750 transitions. Word has length 310 [2022-11-03 03:47:29,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:29,626 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 750 transitions. [2022-11-03 03:47:29,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:29,627 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 750 transitions. [2022-11-03 03:47:29,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:47:29,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:29,629 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:29,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2022-11-03 03:47:29,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:47:29,851 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:29,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:29,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1686645635, now seen corresponding path program 1 times [2022-11-03 03:47:29,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:47:29,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1921736314] [2022-11-03 03:47:29,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:29,854 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:47:29,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:47:29,855 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:47:29,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-03 03:47:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:30,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-03 03:47:30,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:31,608 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:47:31,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:47:31,609 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:47:31,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1921736314] [2022-11-03 03:47:31,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1921736314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:31,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:31,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:47:31,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722242134] [2022-11-03 03:47:31,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:31,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:47:31,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:47:31,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:47:31,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:47:31,611 INFO L87 Difference]: Start difference. First operand 567 states and 750 transitions. Second operand has 6 states, 6 states have (on average 51.666666666666664) internal successors, (310), 6 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:32,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:32,201 INFO L93 Difference]: Finished difference Result 1399 states and 1892 transitions. [2022-11-03 03:47:32,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:47:32,202 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 51.666666666666664) internal successors, (310), 6 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:47:32,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:32,203 INFO L225 Difference]: With dead ends: 1399 [2022-11-03 03:47:32,203 INFO L226 Difference]: Without dead ends: 1108 [2022-11-03 03:47:32,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-03 03:47:32,204 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 1403 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1403 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:32,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1403 Valid, 1500 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:47:32,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2022-11-03 03:47:32,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 699. [2022-11-03 03:47:32,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 698 states have (on average 1.320916905444126) internal successors, (922), 698 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:32,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 922 transitions. [2022-11-03 03:47:32,223 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 922 transitions. Word has length 310 [2022-11-03 03:47:32,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:32,223 INFO L495 AbstractCegarLoop]: Abstraction has 699 states and 922 transitions. [2022-11-03 03:47:32,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.666666666666664) internal successors, (310), 6 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:32,224 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 922 transitions. [2022-11-03 03:47:32,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:47:32,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:32,226 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:32,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-11-03 03:47:32,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:47:32,439 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:32,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:32,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1563363969, now seen corresponding path program 1 times [2022-11-03 03:47:32,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:47:32,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [648776710] [2022-11-03 03:47:32,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:32,441 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:47:32,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:47:32,442 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:47:32,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-03 03:47:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:33,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 224 conjunts are in the unsatisfiable core [2022-11-03 03:47:33,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:49,704 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:47:49,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:47:49,704 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:47:49,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [648776710] [2022-11-03 03:47:49,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [648776710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:49,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:49,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 03:47:49,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289104070] [2022-11-03 03:47:49,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:49,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 03:47:49,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:47:49,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 03:47:49,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-11-03 03:47:49,706 INFO L87 Difference]: Start difference. First operand 699 states and 922 transitions. Second operand has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:52,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:52,057 INFO L93 Difference]: Finished difference Result 2276 states and 3049 transitions. [2022-11-03 03:47:52,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 03:47:52,059 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:47:52,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:52,063 INFO L225 Difference]: With dead ends: 2276 [2022-11-03 03:47:52,064 INFO L226 Difference]: Without dead ends: 1951 [2022-11-03 03:47:52,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2022-11-03 03:47:52,065 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 2902 mSDsluCounter, 5039 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2902 SdHoareTripleChecker+Valid, 5447 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 160 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:52,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2902 Valid, 5447 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 243 Invalid, 0 Unknown, 160 Unchecked, 0.7s Time] [2022-11-03 03:47:52,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1951 states. [2022-11-03 03:47:52,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1951 to 875. [2022-11-03 03:47:52,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 874 states have (on average 1.294050343249428) internal successors, (1131), 874 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:52,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1131 transitions. [2022-11-03 03:47:52,102 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1131 transitions. Word has length 310 [2022-11-03 03:47:52,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:52,103 INFO L495 AbstractCegarLoop]: Abstraction has 875 states and 1131 transitions. [2022-11-03 03:47:52,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:52,103 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1131 transitions. [2022-11-03 03:47:52,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:47:52,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:52,106 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:52,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-11-03 03:47:52,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:47:52,319 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:52,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:52,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1571362943, now seen corresponding path program 1 times [2022-11-03 03:47:52,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:47:52,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [593723550] [2022-11-03 03:47:52,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:52,322 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:47:52,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:47:52,323 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:47:52,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-03 03:47:53,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:53,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 237 conjunts are in the unsatisfiable core [2022-11-03 03:47:53,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:48:11,459 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:48:11,459 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:48:11,460 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:48:11,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [593723550] [2022-11-03 03:48:11,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [593723550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:11,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:11,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 03:48:11,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097281436] [2022-11-03 03:48:11,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:11,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 03:48:11,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:48:11,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 03:48:11,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-11-03 03:48:11,461 INFO L87 Difference]: Start difference. First operand 875 states and 1131 transitions. Second operand has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:48:14,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:14,974 INFO L93 Difference]: Finished difference Result 2838 states and 3803 transitions. [2022-11-03 03:48:14,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 03:48:14,974 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:48:14,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:14,978 INFO L225 Difference]: With dead ends: 2838 [2022-11-03 03:48:14,978 INFO L226 Difference]: Without dead ends: 2513 [2022-11-03 03:48:14,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2022-11-03 03:48:14,980 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 4112 mSDsluCounter, 5542 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4112 SdHoareTripleChecker+Valid, 5999 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:14,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4112 Valid, 5999 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 416 Invalid, 0 Unknown, 59 Unchecked, 1.1s Time] [2022-11-03 03:48:14,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2022-11-03 03:48:15,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 877. [2022-11-03 03:48:15,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 876 states have (on average 1.29337899543379) internal successors, (1133), 876 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:48:15,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1133 transitions. [2022-11-03 03:48:15,013 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1133 transitions. Word has length 310 [2022-11-03 03:48:15,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:15,014 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1133 transitions. [2022-11-03 03:48:15,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:48:15,014 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1133 transitions. [2022-11-03 03:48:15,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:48:15,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:15,017 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:15,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2022-11-03 03:48:15,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:48:15,231 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:48:15,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:15,232 INFO L85 PathProgramCache]: Analyzing trace with hash -413830653, now seen corresponding path program 1 times [2022-11-03 03:48:15,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:48:15,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1646270304] [2022-11-03 03:48:15,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:15,233 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:48:15,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:48:15,234 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:48:15,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-03 03:48:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:16,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-03 03:48:16,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:48:19,745 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:48:19,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:48:19,746 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:48:19,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1646270304] [2022-11-03 03:48:19,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1646270304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:19,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:19,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-03 03:48:19,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997936314] [2022-11-03 03:48:19,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:19,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-03 03:48:19,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:48:19,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-03 03:48:19,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2022-11-03 03:48:19,748 INFO L87 Difference]: Start difference. First operand 877 states and 1133 transitions. Second operand has 24 states, 24 states have (on average 12.916666666666666) internal successors, (310), 24 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:48:20,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:20,303 INFO L93 Difference]: Finished difference Result 1901 states and 2506 transitions. [2022-11-03 03:48:20,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-03 03:48:20,304 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 12.916666666666666) internal successors, (310), 24 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:48:20,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:20,306 INFO L225 Difference]: With dead ends: 1901 [2022-11-03 03:48:20,307 INFO L226 Difference]: Without dead ends: 1576 [2022-11-03 03:48:20,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=56, Invalid=594, Unknown=0, NotChecked=0, Total=650 [2022-11-03 03:48:20,308 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 861 mSDsluCounter, 8353 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 8759 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 853 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:20,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 8759 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 138 Invalid, 0 Unknown, 853 Unchecked, 0.4s Time] [2022-11-03 03:48:20,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2022-11-03 03:48:20,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1065. [2022-11-03 03:48:20,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1064 states have (on average 1.281954887218045) internal successors, (1364), 1064 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:48:20,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1364 transitions. [2022-11-03 03:48:20,339 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1364 transitions. Word has length 310 [2022-11-03 03:48:20,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:20,339 INFO L495 AbstractCegarLoop]: Abstraction has 1065 states and 1364 transitions. [2022-11-03 03:48:20,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 12.916666666666666) internal successors, (310), 24 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:48:20,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1364 transitions. [2022-11-03 03:48:20,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:48:20,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:20,343 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:20,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (49)] Ended with exit code 0 [2022-11-03 03:48:20,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:48:20,557 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:48:20,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:20,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1229877883, now seen corresponding path program 1 times [2022-11-03 03:48:20,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:48:20,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295039591] [2022-11-03 03:48:20,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:20,559 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:48:20,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:48:20,560 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:48:20,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-03 03:48:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:21,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 238 conjunts are in the unsatisfiable core [2022-11-03 03:48:21,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:48:45,891 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:48:45,892 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:48:45,892 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:48:45,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295039591] [2022-11-03 03:48:45,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1295039591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:45,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:45,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-03 03:48:45,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430448114] [2022-11-03 03:48:45,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:45,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-03 03:48:45,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:48:45,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-03 03:48:45,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=701, Unknown=0, NotChecked=0, Total=756 [2022-11-03 03:48:45,895 INFO L87 Difference]: Start difference. First operand 1065 states and 1364 transitions. Second operand has 28 states, 28 states have (on average 11.071428571428571) internal successors, (310), 28 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:48:46,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:46,363 INFO L93 Difference]: Finished difference Result 2103 states and 2793 transitions. [2022-11-03 03:48:46,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-03 03:48:46,365 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 11.071428571428571) internal successors, (310), 28 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:48:46,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:46,367 INFO L225 Difference]: With dead ends: 2103 [2022-11-03 03:48:46,367 INFO L226 Difference]: Without dead ends: 1778 [2022-11-03 03:48:46,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=70, Invalid=860, Unknown=0, NotChecked=0, Total=930 [2022-11-03 03:48:46,368 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 997 mSDsluCounter, 7842 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 8155 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1179 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:46,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [997 Valid, 8155 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 1179 Unchecked, 0.2s Time] [2022-11-03 03:48:46,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2022-11-03 03:48:46,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1187. [2022-11-03 03:48:46,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 1186 states have (on average 1.279089376053963) internal successors, (1517), 1186 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:48:46,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1517 transitions. [2022-11-03 03:48:46,399 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1517 transitions. Word has length 310 [2022-11-03 03:48:46,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:46,399 INFO L495 AbstractCegarLoop]: Abstraction has 1187 states and 1517 transitions. [2022-11-03 03:48:46,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 11.071428571428571) internal successors, (310), 28 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:48:46,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1517 transitions. [2022-11-03 03:48:46,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:48:46,402 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:46,403 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:46,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (50)] Ended with exit code 0 [2022-11-03 03:48:46,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:48:46,628 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:48:46,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:46,628 INFO L85 PathProgramCache]: Analyzing trace with hash 369271175, now seen corresponding path program 1 times [2022-11-03 03:48:46,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:48:46,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1120893274] [2022-11-03 03:48:46,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:46,631 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:48:46,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:48:46,632 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:48:46,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-03 03:48:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:47,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:48:47,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:48:47,608 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:48:47,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:48:47,608 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:48:47,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1120893274] [2022-11-03 03:48:47,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1120893274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:47,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:47,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:48:47,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586658005] [2022-11-03 03:48:47,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:47,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:48:47,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:48:47,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:48:47,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:48:47,610 INFO L87 Difference]: Start difference. First operand 1187 states and 1517 transitions. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:48:47,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:47,810 INFO L93 Difference]: Finished difference Result 1543 states and 2011 transitions. [2022-11-03 03:48:47,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:48:47,811 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:48:47,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:47,813 INFO L225 Difference]: With dead ends: 1543 [2022-11-03 03:48:47,813 INFO L226 Difference]: Without dead ends: 1218 [2022-11-03 03:48:47,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:48:47,814 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 463 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:47,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 649 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:48:47,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2022-11-03 03:48:47,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1187. [2022-11-03 03:48:47,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 1186 states have (on average 1.2782462057335582) internal successors, (1516), 1186 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:48:47,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1516 transitions. [2022-11-03 03:48:47,841 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1516 transitions. Word has length 310 [2022-11-03 03:48:47,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:47,842 INFO L495 AbstractCegarLoop]: Abstraction has 1187 states and 1516 transitions. [2022-11-03 03:48:47,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:48:47,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1516 transitions. [2022-11-03 03:48:47,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:48:47,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:47,846 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:47,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-11-03 03:48:48,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:48:48,059 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:48:48,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:48,060 INFO L85 PathProgramCache]: Analyzing trace with hash 459331465, now seen corresponding path program 1 times [2022-11-03 03:48:48,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:48:48,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [490226672] [2022-11-03 03:48:48,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:48,061 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:48:48,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:48:48,062 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:48:48,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-03 03:48:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:48,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:48:48,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:48:49,021 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:48:49,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:48:49,022 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:48:49,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [490226672] [2022-11-03 03:48:49,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [490226672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:49,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:49,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:48:49,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946420414] [2022-11-03 03:48:49,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:49,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:48:49,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:48:49,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:48:49,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:48:49,024 INFO L87 Difference]: Start difference. First operand 1187 states and 1516 transitions. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:48:49,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:49,217 INFO L93 Difference]: Finished difference Result 1547 states and 2014 transitions. [2022-11-03 03:48:49,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:48:49,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:48:49,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:49,220 INFO L225 Difference]: With dead ends: 1547 [2022-11-03 03:48:49,220 INFO L226 Difference]: Without dead ends: 1222 [2022-11-03 03:48:49,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:48:49,221 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 457 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:49,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 656 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:48:49,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2022-11-03 03:48:49,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1187. [2022-11-03 03:48:49,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 1186 states have (on average 1.2774030354131534) internal successors, (1515), 1186 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:48:49,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1515 transitions. [2022-11-03 03:48:49,248 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1515 transitions. Word has length 310 [2022-11-03 03:48:49,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:49,249 INFO L495 AbstractCegarLoop]: Abstraction has 1187 states and 1515 transitions. [2022-11-03 03:48:49,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:48:49,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1515 transitions. [2022-11-03 03:48:49,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:48:49,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:49,253 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:49,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (52)] Ended with exit code 0 [2022-11-03 03:48:49,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:48:49,467 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:48:49,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:49,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1463918965, now seen corresponding path program 1 times [2022-11-03 03:48:49,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:48:49,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163352430] [2022-11-03 03:48:49,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:49,469 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:48:49,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:48:49,470 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:48:49,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-03 03:48:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:50,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:48:50,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:48:50,525 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:48:50,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:48:50,525 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:48:50,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163352430] [2022-11-03 03:48:50,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163352430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:50,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:50,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:48:50,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173178143] [2022-11-03 03:48:50,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:50,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:48:50,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:48:50,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:48:50,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:48:50,528 INFO L87 Difference]: Start difference. First operand 1187 states and 1515 transitions. Second operand has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:48:50,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:50,829 INFO L93 Difference]: Finished difference Result 1878 states and 2467 transitions. [2022-11-03 03:48:50,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:48:50,829 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:48:50,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:50,831 INFO L225 Difference]: With dead ends: 1878 [2022-11-03 03:48:50,831 INFO L226 Difference]: Without dead ends: 1553 [2022-11-03 03:48:50,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:48:50,833 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 390 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 2100 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:50,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 2100 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 32 Unchecked, 0.3s Time] [2022-11-03 03:48:50,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2022-11-03 03:48:50,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 1229. [2022-11-03 03:48:50,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 1228 states have (on average 1.281758957654723) internal successors, (1574), 1228 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:48:50,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1574 transitions. [2022-11-03 03:48:50,851 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1574 transitions. Word has length 310 [2022-11-03 03:48:50,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:50,851 INFO L495 AbstractCegarLoop]: Abstraction has 1229 states and 1574 transitions. [2022-11-03 03:48:50,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:48:50,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1574 transitions. [2022-11-03 03:48:50,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:48:50,854 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:50,854 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:50,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2022-11-03 03:48:51,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:48:51,079 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:48:51,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:51,080 INFO L85 PathProgramCache]: Analyzing trace with hash -796537075, now seen corresponding path program 1 times [2022-11-03 03:48:51,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:48:51,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1934094808] [2022-11-03 03:48:51,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:51,081 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:48:51,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:48:51,082 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:48:51,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-03 03:48:51,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:51,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:48:51,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:48:52,055 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:48:52,055 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:48:52,055 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:48:52,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1934094808] [2022-11-03 03:48:52,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1934094808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:52,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:52,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:48:52,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852300521] [2022-11-03 03:48:52,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:52,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:48:52,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:48:52,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:48:52,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:48:52,057 INFO L87 Difference]: Start difference. First operand 1229 states and 1574 transitions. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:48:52,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:52,246 INFO L93 Difference]: Finished difference Result 1575 states and 2050 transitions. [2022-11-03 03:48:52,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:48:52,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:48:52,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:52,248 INFO L225 Difference]: With dead ends: 1575 [2022-11-03 03:48:52,248 INFO L226 Difference]: Without dead ends: 1250 [2022-11-03 03:48:52,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:48:52,249 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 443 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:52,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 683 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:48:52,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2022-11-03 03:48:52,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1229. [2022-11-03 03:48:52,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 1228 states have (on average 1.2809446254071661) internal successors, (1573), 1228 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:48:52,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1573 transitions. [2022-11-03 03:48:52,273 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1573 transitions. Word has length 310 [2022-11-03 03:48:52,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:52,274 INFO L495 AbstractCegarLoop]: Abstraction has 1229 states and 1573 transitions. [2022-11-03 03:48:52,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:48:52,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1573 transitions. [2022-11-03 03:48:52,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:48:52,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:52,278 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:52,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2022-11-03 03:48:52,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:48:52,503 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:48:52,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:52,503 INFO L85 PathProgramCache]: Analyzing trace with hash 2093238543, now seen corresponding path program 1 times [2022-11-03 03:48:52,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:48:52,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1824247774] [2022-11-03 03:48:52,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:52,506 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:48:52,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:48:52,507 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:48:52,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-03 03:48:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:53,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 03:48:53,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:48:54,106 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:48:54,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:48:54,106 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:48:54,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1824247774] [2022-11-03 03:48:54,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1824247774] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:54,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:54,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:48:54,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213708313] [2022-11-03 03:48:54,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:54,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:48:54,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:48:54,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:48:54,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:48:54,108 INFO L87 Difference]: Start difference. First operand 1229 states and 1573 transitions. Second operand has 6 states, 6 states have (on average 51.666666666666664) internal successors, (310), 6 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:48:54,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:54,563 INFO L93 Difference]: Finished difference Result 1906 states and 2501 transitions. [2022-11-03 03:48:54,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:48:54,564 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 51.666666666666664) internal successors, (310), 6 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:48:54,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:54,566 INFO L225 Difference]: With dead ends: 1906 [2022-11-03 03:48:54,566 INFO L226 Difference]: Without dead ends: 1581 [2022-11-03 03:48:54,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:48:54,568 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 1095 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:54,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1095 Valid, 1687 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:48:54,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2022-11-03 03:48:54,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1231. [2022-11-03 03:48:54,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1231 states, 1230 states have (on average 1.2804878048780488) internal successors, (1575), 1230 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:48:54,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1575 transitions. [2022-11-03 03:48:54,596 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1575 transitions. Word has length 310 [2022-11-03 03:48:54,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:54,596 INFO L495 AbstractCegarLoop]: Abstraction has 1231 states and 1575 transitions. [2022-11-03 03:48:54,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.666666666666664) internal successors, (310), 6 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:48:54,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1575 transitions. [2022-11-03 03:48:54,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:48:54,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:54,599 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:54,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2022-11-03 03:48:54,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:48:54,825 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:48:54,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:54,825 INFO L85 PathProgramCache]: Analyzing trace with hash -270603119, now seen corresponding path program 1 times [2022-11-03 03:48:54,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:48:54,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1626307991] [2022-11-03 03:48:54,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:54,827 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:48:54,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:48:54,829 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:48:54,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-03 03:48:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:55,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 238 conjunts are in the unsatisfiable core [2022-11-03 03:48:55,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:20,155 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:49:20,155 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:49:20,156 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:49:20,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1626307991] [2022-11-03 03:49:20,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1626307991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:20,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:49:20,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-03 03:49:20,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534276538] [2022-11-03 03:49:20,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:20,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-03 03:49:20,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:49:20,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-03 03:49:20,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=701, Unknown=0, NotChecked=0, Total=756 [2022-11-03 03:49:20,158 INFO L87 Difference]: Start difference. First operand 1231 states and 1575 transitions. Second operand has 28 states, 28 states have (on average 11.071428571428571) internal successors, (310), 28 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:49:20,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:20,456 INFO L93 Difference]: Finished difference Result 2113 states and 2781 transitions. [2022-11-03 03:49:20,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-03 03:49:20,456 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 11.071428571428571) internal successors, (310), 28 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:49:20,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:20,458 INFO L225 Difference]: With dead ends: 2113 [2022-11-03 03:49:20,458 INFO L226 Difference]: Without dead ends: 1786 [2022-11-03 03:49:20,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=70, Invalid=860, Unknown=0, NotChecked=0, Total=930 [2022-11-03 03:49:20,460 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 779 mSDsluCounter, 7912 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 8222 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1077 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:20,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 8222 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 1077 Unchecked, 0.0s Time] [2022-11-03 03:49:20,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2022-11-03 03:49:20,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1285. [2022-11-03 03:49:20,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1285 states, 1284 states have (on average 1.2834890965732086) internal successors, (1648), 1284 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:49:20,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 1648 transitions. [2022-11-03 03:49:20,482 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 1648 transitions. Word has length 310 [2022-11-03 03:49:20,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:20,482 INFO L495 AbstractCegarLoop]: Abstraction has 1285 states and 1648 transitions. [2022-11-03 03:49:20,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 11.071428571428571) internal successors, (310), 28 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:49:20,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 1648 transitions. [2022-11-03 03:49:20,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:49:20,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:20,485 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:49:20,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2022-11-03 03:49:20,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:49:20,706 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:49:20,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:20,706 INFO L85 PathProgramCache]: Analyzing trace with hash -426583661, now seen corresponding path program 1 times [2022-11-03 03:49:20,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:49:20,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1919841051] [2022-11-03 03:49:20,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:20,709 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:49:20,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:49:20,710 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:49:20,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-03 03:49:21,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:21,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 03:49:21,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:21,999 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:49:22,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:49:22,000 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:49:22,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1919841051] [2022-11-03 03:49:22,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1919841051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:22,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:49:22,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:49:22,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373555161] [2022-11-03 03:49:22,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:22,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:49:22,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:49:22,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:49:22,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:49:22,002 INFO L87 Difference]: Start difference. First operand 1285 states and 1648 transitions. Second operand has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:49:22,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:22,586 INFO L93 Difference]: Finished difference Result 2384 states and 3152 transitions. [2022-11-03 03:49:22,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:49:22,587 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:49:22,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:22,588 INFO L225 Difference]: With dead ends: 2384 [2022-11-03 03:49:22,588 INFO L226 Difference]: Without dead ends: 2057 [2022-11-03 03:49:22,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:49:22,589 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 2011 mSDsluCounter, 2032 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2011 SdHoareTripleChecker+Valid, 2534 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:22,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2011 Valid, 2534 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:49:22,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2057 states. [2022-11-03 03:49:22,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2057 to 1343. [2022-11-03 03:49:22,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 1342 states have (on average 1.2868852459016393) internal successors, (1727), 1342 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:49:22,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 1727 transitions. [2022-11-03 03:49:22,612 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 1727 transitions. Word has length 310 [2022-11-03 03:49:22,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:22,613 INFO L495 AbstractCegarLoop]: Abstraction has 1343 states and 1727 transitions. [2022-11-03 03:49:22,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:49:22,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 1727 transitions. [2022-11-03 03:49:22,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:49:22,615 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:22,615 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:49:22,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2022-11-03 03:49:22,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:49:22,816 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:49:22,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:22,817 INFO L85 PathProgramCache]: Analyzing trace with hash 2080513813, now seen corresponding path program 1 times [2022-11-03 03:49:22,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:49:22,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [747594729] [2022-11-03 03:49:22,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:22,818 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:49:22,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:49:22,821 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:49:22,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-03 03:49:23,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:23,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:49:23,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:23,820 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:49:23,820 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:49:23,820 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:49:23,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [747594729] [2022-11-03 03:49:23,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [747594729] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:23,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:49:23,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:49:23,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631566621] [2022-11-03 03:49:23,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:23,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:49:23,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:49:23,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:49:23,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:49:23,822 INFO L87 Difference]: Start difference. First operand 1343 states and 1727 transitions. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:49:24,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:24,032 INFO L93 Difference]: Finished difference Result 1773 states and 2317 transitions. [2022-11-03 03:49:24,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:49:24,032 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:49:24,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:24,033 INFO L225 Difference]: With dead ends: 1773 [2022-11-03 03:49:24,033 INFO L226 Difference]: Without dead ends: 1408 [2022-11-03 03:49:24,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:49:24,035 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 421 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:24,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 738 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:49:24,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1408 states. [2022-11-03 03:49:24,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1408 to 1343. [2022-11-03 03:49:24,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 1342 states have (on average 1.286140089418778) internal successors, (1726), 1342 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:49:24,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 1726 transitions. [2022-11-03 03:49:24,054 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 1726 transitions. Word has length 310 [2022-11-03 03:49:24,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:24,054 INFO L495 AbstractCegarLoop]: Abstraction has 1343 states and 1726 transitions. [2022-11-03 03:49:24,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:49:24,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 1726 transitions. [2022-11-03 03:49:24,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:49:24,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:24,058 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:49:24,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2022-11-03 03:49:24,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:49:24,280 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:49:24,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:24,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1850986985, now seen corresponding path program 1 times [2022-11-03 03:49:24,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:49:24,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1844617274] [2022-11-03 03:49:24,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:24,283 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:49:24,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:49:24,284 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:49:24,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2022-11-03 03:49:25,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:25,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:49:25,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:25,361 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:49:25,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:49:25,362 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:49:25,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1844617274] [2022-11-03 03:49:25,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1844617274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:25,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:49:25,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:49:25,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786602010] [2022-11-03 03:49:25,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:25,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:49:25,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:49:25,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:49:25,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:49:25,363 INFO L87 Difference]: Start difference. First operand 1343 states and 1726 transitions. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:49:25,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:25,580 INFO L93 Difference]: Finished difference Result 1783 states and 2329 transitions. [2022-11-03 03:49:25,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:49:25,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:49:25,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:25,582 INFO L225 Difference]: With dead ends: 1783 [2022-11-03 03:49:25,582 INFO L226 Difference]: Without dead ends: 1418 [2022-11-03 03:49:25,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:49:25,583 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 409 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:25,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 761 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:49:25,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2022-11-03 03:49:25,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 1343. [2022-11-03 03:49:25,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 1342 states have (on average 1.2853949329359164) internal successors, (1725), 1342 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:49:25,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 1725 transitions. [2022-11-03 03:49:25,601 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 1725 transitions. Word has length 310 [2022-11-03 03:49:25,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:25,602 INFO L495 AbstractCegarLoop]: Abstraction has 1343 states and 1725 transitions. [2022-11-03 03:49:25,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:49:25,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 1725 transitions. [2022-11-03 03:49:25,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:49:25,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:25,604 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:49:25,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (59)] Ended with exit code 0 [2022-11-03 03:49:25,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:49:25,805 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:49:25,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:25,806 INFO L85 PathProgramCache]: Analyzing trace with hash -989153383, now seen corresponding path program 1 times [2022-11-03 03:49:25,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:49:25,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754786449] [2022-11-03 03:49:25,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:25,807 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:49:25,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:49:25,808 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:49:25,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2022-11-03 03:49:26,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:26,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-03 03:49:26,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:31,357 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:49:31,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:49:31,357 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:49:31,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754786449] [2022-11-03 03:49:31,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754786449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:31,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:49:31,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-03 03:49:31,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862214876] [2022-11-03 03:49:31,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:31,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-03 03:49:31,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:49:31,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-03 03:49:31,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=597, Unknown=0, NotChecked=0, Total=650 [2022-11-03 03:49:31,359 INFO L87 Difference]: Start difference. First operand 1343 states and 1725 transitions. Second operand has 26 states, 26 states have (on average 11.923076923076923) internal successors, (310), 26 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:49:31,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:31,440 INFO L93 Difference]: Finished difference Result 1819 states and 2375 transitions. [2022-11-03 03:49:31,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-03 03:49:31,441 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 11.923076923076923) internal successors, (310), 26 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:49:31,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:31,442 INFO L225 Difference]: With dead ends: 1819 [2022-11-03 03:49:31,442 INFO L226 Difference]: Without dead ends: 1454 [2022-11-03 03:49:31,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=53, Invalid=597, Unknown=0, NotChecked=0, Total=650 [2022-11-03 03:49:31,443 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 194 mSDsluCounter, 6054 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 6325 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 379 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:31,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 6325 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 379 Unchecked, 0.0s Time] [2022-11-03 03:49:31,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2022-11-03 03:49:31,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 1445. [2022-11-03 03:49:31,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1444 states have (on average 1.290858725761773) internal successors, (1864), 1444 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:49:31,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1864 transitions. [2022-11-03 03:49:31,469 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1864 transitions. Word has length 310 [2022-11-03 03:49:31,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:31,470 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1864 transitions. [2022-11-03 03:49:31,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.923076923076923) internal successors, (310), 26 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:49:31,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1864 transitions. [2022-11-03 03:49:31,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:49:31,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:31,473 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:49:31,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2022-11-03 03:49:31,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:49:31,696 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:49:31,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:31,697 INFO L85 PathProgramCache]: Analyzing trace with hash 2023641627, now seen corresponding path program 1 times [2022-11-03 03:49:31,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:49:31,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1935080435] [2022-11-03 03:49:31,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:31,699 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:49:31,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:49:31,700 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:49:31,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2022-11-03 03:49:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:32,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:49:32,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:32,775 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:49:32,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:49:32,775 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:49:32,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1935080435] [2022-11-03 03:49:32,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1935080435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:32,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:49:32,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:49:32,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885612173] [2022-11-03 03:49:32,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:32,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:49:32,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:49:32,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:49:32,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:49:32,776 INFO L87 Difference]: Start difference. First operand 1445 states and 1864 transitions. Second operand has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:49:33,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:33,162 INFO L93 Difference]: Finished difference Result 2465 states and 3248 transitions. [2022-11-03 03:49:33,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 03:49:33,163 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:49:33,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:33,168 INFO L225 Difference]: With dead ends: 2465 [2022-11-03 03:49:33,168 INFO L226 Difference]: Without dead ends: 2100 [2022-11-03 03:49:33,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:49:33,169 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 789 mSDsluCounter, 2315 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 2869 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:33,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 2869 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 59 Unchecked, 0.3s Time] [2022-11-03 03:49:33,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2022-11-03 03:49:33,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 1509. [2022-11-03 03:49:33,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1509 states, 1508 states have (on average 1.2937665782493368) internal successors, (1951), 1508 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:49:33,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 1951 transitions. [2022-11-03 03:49:33,193 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 1951 transitions. Word has length 310 [2022-11-03 03:49:33,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:33,194 INFO L495 AbstractCegarLoop]: Abstraction has 1509 states and 1951 transitions. [2022-11-03 03:49:33,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:49:33,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 1951 transitions. [2022-11-03 03:49:33,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:49:33,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:33,196 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:49:33,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (61)] Ended with exit code 0 [2022-11-03 03:49:33,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:49:33,396 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:49:33,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:33,397 INFO L85 PathProgramCache]: Analyzing trace with hash 301638941, now seen corresponding path program 1 times [2022-11-03 03:49:33,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:49:33,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1388410335] [2022-11-03 03:49:33,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:33,399 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:49:33,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:49:33,400 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:49:33,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2022-11-03 03:49:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:34,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 03:49:34,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:35,496 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 58 proven. 29 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:49:35,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:49:37,195 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 58 proven. 29 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:49:37,196 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:49:37,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1388410335] [2022-11-03 03:49:37,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1388410335] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:49:37,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2015544320] [2022-11-03 03:49:37,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:37,196 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:49:37,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:49:37,198 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:49:37,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (63)] Waiting until timeout for monitored process [2022-11-03 03:49:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:38,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:49:38,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:38,563 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-03 03:49:38,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:49:38,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2015544320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:38,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:49:38,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2022-11-03 03:49:38,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931754514] [2022-11-03 03:49:38,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:38,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:49:38,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:49:38,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:49:38,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-03 03:49:38,566 INFO L87 Difference]: Start difference. First operand 1509 states and 1951 transitions. Second operand has 5 states, 5 states have (on average 44.4) internal successors, (222), 5 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:49:38,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:38,686 INFO L93 Difference]: Finished difference Result 3418 states and 4523 transitions. [2022-11-03 03:49:38,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:49:38,686 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.4) internal successors, (222), 5 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:49:38,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:38,689 INFO L225 Difference]: With dead ends: 3418 [2022-11-03 03:49:38,689 INFO L226 Difference]: Without dead ends: 3053 [2022-11-03 03:49:38,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 933 GetRequests, 919 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:49:38,691 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 1437 mSDsluCounter, 1269 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:38,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1437 Valid, 1710 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:49:38,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3053 states. [2022-11-03 03:49:38,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3053 to 1525. [2022-11-03 03:49:38,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1524 states have (on average 1.2946194225721785) internal successors, (1973), 1524 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:49:38,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 1973 transitions. [2022-11-03 03:49:38,725 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 1973 transitions. Word has length 310 [2022-11-03 03:49:38,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:38,726 INFO L495 AbstractCegarLoop]: Abstraction has 1525 states and 1973 transitions. [2022-11-03 03:49:38,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.4) internal successors, (222), 5 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:49:38,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 1973 transitions. [2022-11-03 03:49:38,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:49:38,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:38,729 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:49:38,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (63)] Ended with exit code 0 [2022-11-03 03:49:38,954 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (62)] Ended with exit code 0 [2022-11-03 03:49:39,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:49:39,138 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:49:39,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:39,138 INFO L85 PathProgramCache]: Analyzing trace with hash 358897243, now seen corresponding path program 1 times [2022-11-03 03:49:39,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:49:39,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2058178021] [2022-11-03 03:49:39,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:39,140 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:49:39,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:49:39,141 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:49:39,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2022-11-03 03:49:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:39,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 03:49:39,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:41,287 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 58 proven. 29 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:49:41,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:49:42,887 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 58 proven. 29 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:49:42,887 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:49:42,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2058178021] [2022-11-03 03:49:42,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2058178021] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:49:42,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1395907885] [2022-11-03 03:49:42,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:42,889 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:49:42,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:49:42,891 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:49:42,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (65)] Waiting until timeout for monitored process [2022-11-03 03:49:44,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:44,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 03:49:44,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:45,370 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:49:45,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:49:45,907 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:49:45,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1395907885] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:49:45,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787798660] [2022-11-03 03:49:45,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:45,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:49:45,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:49:45,910 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:49:45,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-11-03 03:49:46,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:46,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 03:49:46,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:47,286 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:49:47,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:49:47,749 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:49:47,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787798660] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:49:47,749 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 03:49:47,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8, 8, 8, 8] total 19 [2022-11-03 03:49:47,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553171445] [2022-11-03 03:49:47,750 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 03:49:47,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-03 03:49:47,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:49:47,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-03 03:49:47,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-11-03 03:49:47,753 INFO L87 Difference]: Start difference. First operand 1525 states and 1973 transitions. Second operand has 19 states, 19 states have (on average 50.63157894736842) internal successors, (962), 19 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:49:49,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:49,547 INFO L93 Difference]: Finished difference Result 4915 states and 6563 transitions. [2022-11-03 03:49:49,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-03 03:49:49,547 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 50.63157894736842) internal successors, (962), 19 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:49:49,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:49,549 INFO L225 Difference]: With dead ends: 4915 [2022-11-03 03:49:49,549 INFO L226 Difference]: Without dead ends: 4534 [2022-11-03 03:49:49,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1879 GetRequests, 1839 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=435, Invalid=1287, Unknown=0, NotChecked=0, Total=1722 [2022-11-03 03:49:49,550 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 4648 mSDsluCounter, 6832 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4648 SdHoareTripleChecker+Valid, 7125 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 180 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:49,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4648 Valid, 7125 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 579 Invalid, 0 Unknown, 180 Unchecked, 1.0s Time] [2022-11-03 03:49:49,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4534 states. [2022-11-03 03:49:49,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4534 to 2503. [2022-11-03 03:49:49,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2503 states, 2502 states have (on average 1.3017585931254996) internal successors, (3257), 2502 states have internal predecessors, (3257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:49:49,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 3257 transitions. [2022-11-03 03:49:49,614 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 3257 transitions. Word has length 310 [2022-11-03 03:49:49,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:49,614 INFO L495 AbstractCegarLoop]: Abstraction has 2503 states and 3257 transitions. [2022-11-03 03:49:49,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 50.63157894736842) internal successors, (962), 19 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:49:49,615 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 3257 transitions. [2022-11-03 03:49:49,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:49:49,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:49,619 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:49:49,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-11-03 03:49:49,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (65)] Ended with exit code 0 [2022-11-03 03:49:50,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (64)] Ended with exit code 0 [2022-11-03 03:49:50,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:49:50,227 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:49:50,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:50,228 INFO L85 PathProgramCache]: Analyzing trace with hash -660575141, now seen corresponding path program 1 times [2022-11-03 03:49:50,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:49:50,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [312281307] [2022-11-03 03:49:50,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:50,230 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:49:50,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:49:50,231 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:49:50,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2022-11-03 03:49:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:51,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 03:49:51,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:52,951 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:49:52,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:49:55,314 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:49:55,314 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:49:55,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [312281307] [2022-11-03 03:49:55,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [312281307] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:49:55,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2085324372] [2022-11-03 03:49:55,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:55,315 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:49:55,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:49:55,315 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:49:55,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (68)] Waiting until timeout for monitored process [2022-11-03 03:49:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:56,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:49:56,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:56,681 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-03 03:49:56,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:49:56,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2085324372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:56,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:49:56,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2022-11-03 03:49:56,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458557850] [2022-11-03 03:49:56,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:56,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:49:56,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:49:56,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:49:56,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-03 03:49:56,683 INFO L87 Difference]: Start difference. First operand 2503 states and 3257 transitions. Second operand has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:49:56,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:56,845 INFO L93 Difference]: Finished difference Result 4800 states and 6365 transitions. [2022-11-03 03:49:56,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:49:56,846 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:49:56,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:56,849 INFO L225 Difference]: With dead ends: 4800 [2022-11-03 03:49:56,849 INFO L226 Difference]: Without dead ends: 3895 [2022-11-03 03:49:56,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 932 GetRequests, 918 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:49:56,851 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 1082 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:56,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1082 Valid, 1417 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:49:56,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3895 states. [2022-11-03 03:49:56,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3895 to 2511. [2022-11-03 03:49:56,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2511 states, 2510 states have (on average 1.300796812749004) internal successors, (3265), 2510 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:49:56,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 3265 transitions. [2022-11-03 03:49:56,893 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 3265 transitions. Word has length 310 [2022-11-03 03:49:56,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:56,893 INFO L495 AbstractCegarLoop]: Abstraction has 2511 states and 3265 transitions. [2022-11-03 03:49:56,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:49:56,894 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 3265 transitions. [2022-11-03 03:49:56,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:49:56,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:56,896 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:49:56,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (68)] Forceful destruction successful, exit code 0 [2022-11-03 03:49:57,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (67)] Ended with exit code 0 [2022-11-03 03:49:57,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:49:57,297 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:49:57,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:57,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1640247449, now seen corresponding path program 1 times [2022-11-03 03:49:57,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:49:57,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396520930] [2022-11-03 03:49:57,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:57,299 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:49:57,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:49:57,300 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:49:57,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2022-11-03 03:49:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:58,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 03:49:58,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:50:00,034 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:50:00,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:50:02,370 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:50:02,371 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:50:02,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396520930] [2022-11-03 03:50:02,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1396520930] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:50:02,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2106808821] [2022-11-03 03:50:02,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:50:02,372 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:50:02,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:50:02,373 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:50:02,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (70)] Waiting until timeout for monitored process [2022-11-03 03:50:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:50:03,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:50:03,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:50:03,718 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-03 03:50:03,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:50:03,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2106808821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:50:03,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:50:03,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2022-11-03 03:50:03,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252617239] [2022-11-03 03:50:03,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:50:03,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:50:03,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:50:03,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:50:03,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-03 03:50:03,720 INFO L87 Difference]: Start difference. First operand 2511 states and 3265 transitions. Second operand has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:50:03,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:50:03,894 INFO L93 Difference]: Finished difference Result 4848 states and 6421 transitions. [2022-11-03 03:50:03,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:50:03,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:50:03,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:50:03,898 INFO L225 Difference]: With dead ends: 4848 [2022-11-03 03:50:03,899 INFO L226 Difference]: Without dead ends: 3935 [2022-11-03 03:50:03,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 933 GetRequests, 919 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:50:03,901 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 1083 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:50:03,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 1416 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:50:03,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3935 states. [2022-11-03 03:50:03,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3935 to 2559. [2022-11-03 03:50:03,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2559 states, 2558 states have (on average 1.3014073494917904) internal successors, (3329), 2558 states have internal predecessors, (3329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:50:03,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2559 states to 2559 states and 3329 transitions. [2022-11-03 03:50:03,967 INFO L78 Accepts]: Start accepts. Automaton has 2559 states and 3329 transitions. Word has length 310 [2022-11-03 03:50:03,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:50:03,968 INFO L495 AbstractCegarLoop]: Abstraction has 2559 states and 3329 transitions. [2022-11-03 03:50:03,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:50:03,968 INFO L276 IsEmpty]: Start isEmpty. Operand 2559 states and 3329 transitions. [2022-11-03 03:50:03,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:50:03,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:50:03,972 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:50:03,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (70)] Forceful destruction successful, exit code 0 [2022-11-03 03:50:04,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2022-11-03 03:50:04,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:50:04,381 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:50:04,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:50:04,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1247220439, now seen corresponding path program 1 times [2022-11-03 03:50:04,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:50:04,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1519056363] [2022-11-03 03:50:04,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:50:04,384 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:50:04,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:50:04,385 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:50:04,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2022-11-03 03:50:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:50:05,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 03:50:05,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:50:07,249 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:50:07,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:50:09,556 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:50:09,556 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:50:09,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1519056363] [2022-11-03 03:50:09,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1519056363] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:50:09,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2120653750] [2022-11-03 03:50:09,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:50:09,556 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:50:09,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:50:09,557 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:50:09,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (72)] Waiting until timeout for monitored process [2022-11-03 03:50:11,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:50:11,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-03 03:50:11,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:50:13,962 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-03 03:50:13,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:50:16,240 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-03 03:50:16,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2120653750] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:50:16,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132488758] [2022-11-03 03:50:16,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:50:16,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:50:16,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:50:16,243 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:50:16,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-11-03 03:50:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:50:16,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 03:50:16,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:50:18,086 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 64 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 03:50:18,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:50:19,225 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 29 proven. 61 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 03:50:19,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132488758] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:50:19,225 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 03:50:19,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 17, 9, 10, 10] total 44 [2022-11-03 03:50:19,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755317855] [2022-11-03 03:50:19,226 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 03:50:19,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-03 03:50:19,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:50:19,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-03 03:50:19,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1732, Unknown=0, NotChecked=0, Total=1892 [2022-11-03 03:50:19,228 INFO L87 Difference]: Start difference. First operand 2559 states and 3329 transitions. Second operand has 44 states, 44 states have (on average 33.5) internal successors, (1474), 44 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:50:23,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:50:23,590 INFO L93 Difference]: Finished difference Result 4501 states and 5916 transitions. [2022-11-03 03:50:23,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-03 03:50:23,590 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 33.5) internal successors, (1474), 44 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:50:23,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:50:23,593 INFO L225 Difference]: With dead ends: 4501 [2022-11-03 03:50:23,593 INFO L226 Difference]: Without dead ends: 3540 [2022-11-03 03:50:23,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1899 GetRequests, 1824 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 944 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=710, Invalid=5142, Unknown=0, NotChecked=0, Total=5852 [2022-11-03 03:50:23,595 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 2974 mSDsluCounter, 6928 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2974 SdHoareTripleChecker+Valid, 7197 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 741 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:50:23,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2974 Valid, 7197 Invalid, 1205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 458 Invalid, 0 Unknown, 741 Unchecked, 0.7s Time] [2022-11-03 03:50:23,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3540 states. [2022-11-03 03:50:23,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3540 to 2599. [2022-11-03 03:50:23,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2599 states, 2598 states have (on average 1.3006158583525789) internal successors, (3379), 2598 states have internal predecessors, (3379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:50:23,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2599 states to 2599 states and 3379 transitions. [2022-11-03 03:50:23,636 INFO L78 Accepts]: Start accepts. Automaton has 2599 states and 3379 transitions. Word has length 310 [2022-11-03 03:50:23,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:50:23,636 INFO L495 AbstractCegarLoop]: Abstraction has 2599 states and 3379 transitions. [2022-11-03 03:50:23,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 33.5) internal successors, (1474), 44 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:50:23,637 INFO L276 IsEmpty]: Start isEmpty. Operand 2599 states and 3379 transitions. [2022-11-03 03:50:23,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:50:23,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:50:23,640 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:50:23,650 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (72)] Ended with exit code 0 [2022-11-03 03:50:23,858 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (71)] Ended with exit code 0 [2022-11-03 03:50:24,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2022-11-03 03:50:24,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:50:24,241 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:50:24,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:50:24,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1756753111, now seen corresponding path program 1 times [2022-11-03 03:50:24,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:50:24,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1958181817] [2022-11-03 03:50:24,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:50:24,243 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:50:24,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:50:24,244 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:50:24,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2022-11-03 03:50:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:50:25,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:50:25,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:50:25,319 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:50:25,319 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:50:25,319 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:50:25,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1958181817] [2022-11-03 03:50:25,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1958181817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:50:25,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:50:25,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:50:25,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191091139] [2022-11-03 03:50:25,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:50:25,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:50:25,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:50:25,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:50:25,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:50:25,321 INFO L87 Difference]: Start difference. First operand 2599 states and 3379 transitions. Second operand has 6 states, 6 states have (on average 48.666666666666664) internal successors, (292), 6 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:50:25,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:50:25,511 INFO L93 Difference]: Finished difference Result 5853 states and 7668 transitions. [2022-11-03 03:50:25,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:50:25,511 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 48.666666666666664) internal successors, (292), 6 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:50:25,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:50:25,514 INFO L225 Difference]: With dead ends: 5853 [2022-11-03 03:50:25,514 INFO L226 Difference]: Without dead ends: 4024 [2022-11-03 03:50:25,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:50:25,516 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 1241 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:50:25,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1241 Valid, 1423 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:50:25,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2022-11-03 03:50:25,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 2699. [2022-11-03 03:50:25,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2699 states, 2698 states have (on average 1.292438843587843) internal successors, (3487), 2698 states have internal predecessors, (3487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:50:25,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2699 states to 2699 states and 3487 transitions. [2022-11-03 03:50:25,557 INFO L78 Accepts]: Start accepts. Automaton has 2699 states and 3487 transitions. Word has length 310 [2022-11-03 03:50:25,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:50:25,557 INFO L495 AbstractCegarLoop]: Abstraction has 2699 states and 3487 transitions. [2022-11-03 03:50:25,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.666666666666664) internal successors, (292), 6 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:50:25,558 INFO L276 IsEmpty]: Start isEmpty. Operand 2699 states and 3487 transitions. [2022-11-03 03:50:25,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:50:25,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:50:25,560 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:50:25,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2022-11-03 03:50:25,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:50:25,761 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:50:25,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:50:25,761 INFO L85 PathProgramCache]: Analyzing trace with hash 2014858967, now seen corresponding path program 1 times [2022-11-03 03:50:25,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:50:25,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1509565530] [2022-11-03 03:50:25,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:50:25,763 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:50:25,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:50:25,764 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:50:25,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2022-11-03 03:50:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:50:26,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:50:26,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:50:26,571 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-03 03:50:26,571 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:50:26,571 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:50:26,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1509565530] [2022-11-03 03:50:26,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1509565530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:50:26,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:50:26,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:50:26,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579498794] [2022-11-03 03:50:26,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:50:26,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:50:26,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:50:26,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:50:26,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:50:26,573 INFO L87 Difference]: Start difference. First operand 2699 states and 3487 transitions. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:50:26,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:50:26,736 INFO L93 Difference]: Finished difference Result 5533 states and 7207 transitions. [2022-11-03 03:50:26,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:50:26,737 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:50:26,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:50:26,740 INFO L225 Difference]: With dead ends: 5533 [2022-11-03 03:50:26,740 INFO L226 Difference]: Without dead ends: 4024 [2022-11-03 03:50:26,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:50:26,742 INFO L413 NwaCegarLoop]: 629 mSDtfsCounter, 652 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:50:26,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 1652 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:50:26,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2022-11-03 03:50:26,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 2699. [2022-11-03 03:50:26,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2699 states, 2698 states have (on average 1.2835433654558932) internal successors, (3463), 2698 states have internal predecessors, (3463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:50:26,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2699 states to 2699 states and 3463 transitions. [2022-11-03 03:50:26,807 INFO L78 Accepts]: Start accepts. Automaton has 2699 states and 3463 transitions. Word has length 310 [2022-11-03 03:50:26,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:50:26,808 INFO L495 AbstractCegarLoop]: Abstraction has 2699 states and 3463 transitions. [2022-11-03 03:50:26,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:50:26,808 INFO L276 IsEmpty]: Start isEmpty. Operand 2699 states and 3463 transitions. [2022-11-03 03:50:26,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:50:26,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:50:26,812 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:50:26,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (75)] Forceful destruction successful, exit code 0 [2022-11-03 03:50:27,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:50:27,037 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:50:27,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:50:27,037 INFO L85 PathProgramCache]: Analyzing trace with hash 2014918549, now seen corresponding path program 1 times [2022-11-03 03:50:27,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:50:27,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1891352159] [2022-11-03 03:50:27,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:50:27,039 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:50:27,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:50:27,040 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:50:27,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2022-11-03 03:50:27,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:50:27,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-03 03:50:27,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:50:30,534 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 03:50:30,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:50:34,545 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 03:50:34,545 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:50:34,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1891352159] [2022-11-03 03:50:34,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1891352159] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:50:34,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [663136954] [2022-11-03 03:50:34,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:50:34,546 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:50:34,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:50:34,547 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:50:34,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (77)] Waiting until timeout for monitored process [2022-11-03 03:50:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:50:36,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-03 03:50:36,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:50:38,907 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-03 03:50:38,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:50:40,391 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 03:50:40,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [663136954] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:50:40,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240910720] [2022-11-03 03:50:40,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:50:40,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:50:40,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:50:40,392 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:50:40,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-11-03 03:50:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:50:41,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-03 03:50:41,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:50:43,330 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 03:50:43,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:50:44,919 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 03:50:44,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240910720] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:50:44,920 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 03:50:44,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 24, 20, 21, 21] total 44 [2022-11-03 03:50:44,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471170973] [2022-11-03 03:50:44,920 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 03:50:44,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-03 03:50:44,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:50:44,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-03 03:50:44,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1690, Unknown=0, NotChecked=0, Total=1892 [2022-11-03 03:50:44,923 INFO L87 Difference]: Start difference. First operand 2699 states and 3463 transitions. Second operand has 44 states, 44 states have (on average 10.25) internal successors, (451), 44 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 03:50:58,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:50:58,836 INFO L93 Difference]: Finished difference Result 13707 states and 18271 transitions. [2022-11-03 03:50:58,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-11-03 03:50:58,837 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 10.25) internal successors, (451), 44 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) Word has length 310 [2022-11-03 03:50:58,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:50:58,847 INFO L225 Difference]: With dead ends: 13707 [2022-11-03 03:50:58,847 INFO L226 Difference]: Without dead ends: 13705 [2022-11-03 03:50:58,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1956 GetRequests, 1816 SyntacticMatches, 2 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4593 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=3010, Invalid=16450, Unknown=0, NotChecked=0, Total=19460 [2022-11-03 03:50:58,852 INFO L413 NwaCegarLoop]: 762 mSDtfsCounter, 7328 mSDsluCounter, 23000 mSDsCounter, 0 mSdLazyCounter, 2026 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7328 SdHoareTripleChecker+Valid, 23762 SdHoareTripleChecker+Invalid, 6530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4437 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:50:58,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7328 Valid, 23762 Invalid, 6530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 2026 Invalid, 0 Unknown, 4437 Unchecked, 2.6s Time] [2022-11-03 03:50:58,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13705 states. [2022-11-03 03:50:59,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13705 to 6199. [2022-11-03 03:50:59,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6199 states, 6198 states have (on average 1.303162310422717) internal successors, (8077), 6198 states have internal predecessors, (8077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:50:59,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6199 states to 6199 states and 8077 transitions. [2022-11-03 03:50:59,090 INFO L78 Accepts]: Start accepts. Automaton has 6199 states and 8077 transitions. Word has length 310 [2022-11-03 03:50:59,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:50:59,090 INFO L495 AbstractCegarLoop]: Abstraction has 6199 states and 8077 transitions. [2022-11-03 03:50:59,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 10.25) internal successors, (451), 44 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 03:50:59,091 INFO L276 IsEmpty]: Start isEmpty. Operand 6199 states and 8077 transitions. [2022-11-03 03:50:59,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:50:59,098 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:50:59,098 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:50:59,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (77)] Forceful destruction successful, exit code 0 [2022-11-03 03:50:59,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2022-11-03 03:50:59,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2022-11-03 03:50:59,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:50:59,711 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:50:59,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:50:59,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1205571923, now seen corresponding path program 1 times [2022-11-03 03:50:59,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:50:59,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1110462819] [2022-11-03 03:50:59,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:50:59,714 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:50:59,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:50:59,715 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:50:59,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2022-11-03 03:51:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:00,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:51:00,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:51:00,939 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 03:51:00,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:51:00,985 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-03 03:51:00,986 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:51:00,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1110462819] [2022-11-03 03:51:00,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1110462819] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 03:51:00,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:51:00,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-03 03:51:00,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33020518] [2022-11-03 03:51:00,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:00,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:51:00,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:51:00,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:51:00,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:51:00,988 INFO L87 Difference]: Start difference. First operand 6199 states and 8077 transitions. Second operand has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:01,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:01,219 INFO L93 Difference]: Finished difference Result 20526 states and 27036 transitions. [2022-11-03 03:51:01,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:51:01,219 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:51:01,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:01,229 INFO L225 Difference]: With dead ends: 20526 [2022-11-03 03:51:01,230 INFO L226 Difference]: Without dead ends: 15549 [2022-11-03 03:51:01,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 612 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:51:01,235 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 1731 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1731 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:01,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1731 Valid, 1287 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:51:01,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15549 states. [2022-11-03 03:51:01,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15549 to 6471. [2022-11-03 03:51:01,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6471 states, 6470 states have (on average 1.2984544049459041) internal successors, (8401), 6470 states have internal predecessors, (8401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:01,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6471 states to 6471 states and 8401 transitions. [2022-11-03 03:51:01,456 INFO L78 Accepts]: Start accepts. Automaton has 6471 states and 8401 transitions. Word has length 310 [2022-11-03 03:51:01,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:01,457 INFO L495 AbstractCegarLoop]: Abstraction has 6471 states and 8401 transitions. [2022-11-03 03:51:01,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:01,457 INFO L276 IsEmpty]: Start isEmpty. Operand 6471 states and 8401 transitions. [2022-11-03 03:51:01,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:51:01,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:01,464 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:01,483 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (79)] Ended with exit code 0 [2022-11-03 03:51:01,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:51:01,665 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:01,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:01,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1326189799, now seen corresponding path program 1 times [2022-11-03 03:51:01,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:51:01,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [312996822] [2022-11-03 03:51:01,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:01,668 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:51:01,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:51:01,669 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:51:01,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2022-11-03 03:51:02,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:02,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-03 03:51:02,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:51:04,513 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-03 03:51:04,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:51:07,076 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-03 03:51:07,076 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:51:07,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [312996822] [2022-11-03 03:51:07,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [312996822] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:51:07,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1765968436] [2022-11-03 03:51:07,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:07,077 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:51:07,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:51:07,078 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:51:07,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (81)] Waiting until timeout for monitored process [2022-11-03 03:51:08,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:08,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-03 03:51:08,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:51:10,824 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 03:51:10,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:51:12,163 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-03 03:51:12,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1765968436] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:51:12,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400817183] [2022-11-03 03:51:12,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:12,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:51:12,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:51:12,165 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:51:12,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-11-03 03:51:12,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:12,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-03 03:51:12,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:51:14,831 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-03 03:51:14,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:51:16,445 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-03 03:51:16,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400817183] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:51:16,446 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 03:51:16,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15, 13, 17, 17] total 34 [2022-11-03 03:51:16,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676453546] [2022-11-03 03:51:16,446 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 03:51:16,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-03 03:51:16,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:51:16,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-03 03:51:16,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=905, Unknown=0, NotChecked=0, Total=1122 [2022-11-03 03:51:16,448 INFO L87 Difference]: Start difference. First operand 6471 states and 8401 transitions. Second operand has 34 states, 34 states have (on average 13.264705882352942) internal successors, (451), 34 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 03:51:21,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:21,373 INFO L93 Difference]: Finished difference Result 16620 states and 21791 transitions. [2022-11-03 03:51:21,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-03 03:51:21,373 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 13.264705882352942) internal successors, (451), 34 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) Word has length 310 [2022-11-03 03:51:21,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:21,383 INFO L225 Difference]: With dead ends: 16620 [2022-11-03 03:51:21,383 INFO L226 Difference]: Without dead ends: 16618 [2022-11-03 03:51:21,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1888 GetRequests, 1823 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1154, Invalid=3006, Unknown=0, NotChecked=0, Total=4160 [2022-11-03 03:51:21,387 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 4987 mSDsluCounter, 11803 mSDsCounter, 0 mSdLazyCounter, 1782 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4987 SdHoareTripleChecker+Valid, 12678 SdHoareTripleChecker+Invalid, 3339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1518 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:21,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4987 Valid, 12678 Invalid, 3339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1782 Invalid, 0 Unknown, 1518 Unchecked, 2.1s Time] [2022-11-03 03:51:21,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16618 states. [2022-11-03 03:51:21,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16618 to 6483. [2022-11-03 03:51:21,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6483 states, 6482 states have (on average 1.2979018821351436) internal successors, (8413), 6482 states have internal predecessors, (8413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:21,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6483 states to 6483 states and 8413 transitions. [2022-11-03 03:51:21,533 INFO L78 Accepts]: Start accepts. Automaton has 6483 states and 8413 transitions. Word has length 310 [2022-11-03 03:51:21,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:21,534 INFO L495 AbstractCegarLoop]: Abstraction has 6483 states and 8413 transitions. [2022-11-03 03:51:21,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 13.264705882352942) internal successors, (451), 34 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 03:51:21,534 INFO L276 IsEmpty]: Start isEmpty. Operand 6483 states and 8413 transitions. [2022-11-03 03:51:21,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:51:21,539 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:21,539 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:21,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2022-11-03 03:51:21,749 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (81)] Ended with exit code 0 [2022-11-03 03:51:21,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (80)] Ended with exit code 0 [2022-11-03 03:51:22,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:51:22,140 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:22,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:22,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1268931497, now seen corresponding path program 1 times [2022-11-03 03:51:22,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:51:22,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [87515327] [2022-11-03 03:51:22,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:22,143 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:51:22,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:51:22,144 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:51:22,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2022-11-03 03:51:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:22,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:51:22,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:51:23,414 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 03:51:23,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:51:23,459 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-03 03:51:23,459 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:51:23,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [87515327] [2022-11-03 03:51:23,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [87515327] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 03:51:23,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:51:23,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-03 03:51:23,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41226892] [2022-11-03 03:51:23,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:23,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:51:23,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:51:23,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:51:23,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:51:23,461 INFO L87 Difference]: Start difference. First operand 6483 states and 8413 transitions. Second operand has 5 states, 5 states have (on average 43.6) internal successors, (218), 5 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:23,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:23,649 INFO L93 Difference]: Finished difference Result 16437 states and 21609 transitions. [2022-11-03 03:51:23,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:51:23,650 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.6) internal successors, (218), 5 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:51:23,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:23,657 INFO L225 Difference]: With dead ends: 16437 [2022-11-03 03:51:23,657 INFO L226 Difference]: Without dead ends: 11198 [2022-11-03 03:51:23,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 612 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:51:23,661 INFO L413 NwaCegarLoop]: 729 mSDtfsCounter, 865 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1736 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:23,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 1736 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:51:23,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11198 states. [2022-11-03 03:51:23,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11198 to 6483. [2022-11-03 03:51:23,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6483 states, 6482 states have (on average 1.2898796667695156) internal successors, (8361), 6482 states have internal predecessors, (8361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:23,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6483 states to 6483 states and 8361 transitions. [2022-11-03 03:51:23,777 INFO L78 Accepts]: Start accepts. Automaton has 6483 states and 8361 transitions. Word has length 310 [2022-11-03 03:51:23,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:23,778 INFO L495 AbstractCegarLoop]: Abstraction has 6483 states and 8361 transitions. [2022-11-03 03:51:23,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.6) internal successors, (218), 5 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:23,778 INFO L276 IsEmpty]: Start isEmpty. Operand 6483 states and 8361 transitions. [2022-11-03 03:51:23,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:51:23,783 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:23,783 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:23,808 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (83)] Ended with exit code 0 [2022-11-03 03:51:23,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:51:23,984 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:23,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:23,984 INFO L85 PathProgramCache]: Analyzing trace with hash 993850195, now seen corresponding path program 1 times [2022-11-03 03:51:23,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:51:23,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1599114284] [2022-11-03 03:51:23,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:23,986 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:51:23,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:51:23,987 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:51:23,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2022-11-03 03:51:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:24,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:51:24,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:51:25,245 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 03:51:25,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:51:25,275 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-03 03:51:25,275 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:51:25,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1599114284] [2022-11-03 03:51:25,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1599114284] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 03:51:25,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:51:25,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-03 03:51:25,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487569149] [2022-11-03 03:51:25,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:25,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:51:25,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:51:25,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:51:25,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:51:25,278 INFO L87 Difference]: Start difference. First operand 6483 states and 8361 transitions. Second operand has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:25,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:25,499 INFO L93 Difference]: Finished difference Result 16553 states and 21631 transitions. [2022-11-03 03:51:25,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:51:25,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:51:25,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:25,506 INFO L225 Difference]: With dead ends: 16553 [2022-11-03 03:51:25,506 INFO L226 Difference]: Without dead ends: 11222 [2022-11-03 03:51:25,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 614 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:51:25,509 INFO L413 NwaCegarLoop]: 728 mSDtfsCounter, 875 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:25,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 1590 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:51:25,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11222 states. [2022-11-03 03:51:25,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11222 to 6483. [2022-11-03 03:51:25,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6483 states, 6482 states have (on average 1.2787719839555693) internal successors, (8289), 6482 states have internal predecessors, (8289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:25,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6483 states to 6483 states and 8289 transitions. [2022-11-03 03:51:25,696 INFO L78 Accepts]: Start accepts. Automaton has 6483 states and 8289 transitions. Word has length 310 [2022-11-03 03:51:25,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:25,696 INFO L495 AbstractCegarLoop]: Abstraction has 6483 states and 8289 transitions. [2022-11-03 03:51:25,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:25,697 INFO L276 IsEmpty]: Start isEmpty. Operand 6483 states and 8289 transitions. [2022-11-03 03:51:25,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:51:25,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:25,701 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:25,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (84)] Forceful destruction successful, exit code 0 [2022-11-03 03:51:25,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:51:25,907 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:25,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:25,907 INFO L85 PathProgramCache]: Analyzing trace with hash 184503569, now seen corresponding path program 1 times [2022-11-03 03:51:25,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:51:25,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1319031949] [2022-11-03 03:51:25,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:25,909 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:51:25,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:51:25,911 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:51:25,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2022-11-03 03:51:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:26,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-03 03:51:26,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:51:28,831 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-03 03:51:28,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:51:32,228 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-03 03:51:32,228 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:51:32,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1319031949] [2022-11-03 03:51:32,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1319031949] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:51:32,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1404127200] [2022-11-03 03:51:32,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:32,229 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:51:32,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:51:32,230 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:51:32,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (86)] Waiting until timeout for monitored process [2022-11-03 03:51:33,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:33,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-03 03:51:33,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:51:35,894 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-03 03:51:35,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:51:37,345 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-03 03:51:37,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1404127200] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:51:37,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866259412] [2022-11-03 03:51:37,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:37,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:51:37,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:51:37,346 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:51:37,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-11-03 03:51:38,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:38,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-03 03:51:38,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:51:40,263 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-03 03:51:40,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:51:42,160 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-03 03:51:42,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866259412] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:51:42,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 03:51:42,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 19, 17, 21, 21] total 42 [2022-11-03 03:51:42,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563301243] [2022-11-03 03:51:42,161 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 03:51:42,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-03 03:51:42,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:51:42,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-03 03:51:42,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=1443, Unknown=0, NotChecked=0, Total=1722 [2022-11-03 03:51:42,164 INFO L87 Difference]: Start difference. First operand 6483 states and 8289 transitions. Second operand has 42 states, 42 states have (on average 10.833333333333334) internal successors, (455), 42 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:49,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:49,000 INFO L93 Difference]: Finished difference Result 13472 states and 17482 transitions. [2022-11-03 03:51:49,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-03 03:51:49,001 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 10.833333333333334) internal successors, (455), 42 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:51:49,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:49,007 INFO L225 Difference]: With dead ends: 13472 [2022-11-03 03:51:49,008 INFO L226 Difference]: Without dead ends: 13470 [2022-11-03 03:51:49,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1897 GetRequests, 1812 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1060 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=1638, Invalid=5502, Unknown=0, NotChecked=0, Total=7140 [2022-11-03 03:51:49,010 INFO L413 NwaCegarLoop]: 872 mSDtfsCounter, 3733 mSDsluCounter, 15146 mSDsCounter, 0 mSdLazyCounter, 1998 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3733 SdHoareTripleChecker+Valid, 16018 SdHoareTripleChecker+Invalid, 4384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2359 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:49,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3733 Valid, 16018 Invalid, 4384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1998 Invalid, 0 Unknown, 2359 Unchecked, 2.2s Time] [2022-11-03 03:51:49,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13470 states. [2022-11-03 03:51:49,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13470 to 6491. [2022-11-03 03:51:49,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6491 states, 6490 states have (on average 1.2784283513097072) internal successors, (8297), 6490 states have internal predecessors, (8297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:49,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6491 states to 6491 states and 8297 transitions. [2022-11-03 03:51:49,128 INFO L78 Accepts]: Start accepts. Automaton has 6491 states and 8297 transitions. Word has length 310 [2022-11-03 03:51:49,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:49,128 INFO L495 AbstractCegarLoop]: Abstraction has 6491 states and 8297 transitions. [2022-11-03 03:51:49,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 10.833333333333334) internal successors, (455), 42 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:49,128 INFO L276 IsEmpty]: Start isEmpty. Operand 6491 states and 8297 transitions. [2022-11-03 03:51:49,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:51:49,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:49,132 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:49,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (86)] Forceful destruction successful, exit code 0 [2022-11-03 03:51:49,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (85)] Ended with exit code 0 [2022-11-03 03:51:49,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-11-03 03:51:49,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:51:49,733 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:49,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:49,734 INFO L85 PathProgramCache]: Analyzing trace with hash -624389175, now seen corresponding path program 1 times [2022-11-03 03:51:49,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:51:49,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [757009262] [2022-11-03 03:51:49,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:49,736 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:51:49,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:51:49,736 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:51:49,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2022-11-03 03:51:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:50,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 03:51:50,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:51:51,862 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 82 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:51:51,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:51:53,724 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 82 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:51:53,724 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:51:53,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [757009262] [2022-11-03 03:51:53,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [757009262] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:51:53,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [536430091] [2022-11-03 03:51:53,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:53,725 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:51:53,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:51:53,731 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:51:53,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (89)] Waiting until timeout for monitored process [2022-11-03 03:51:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:55,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 03:51:55,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:51:56,211 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:56,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:51:56,771 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:56,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [536430091] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:51:56,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993071424] [2022-11-03 03:51:56,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:56,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:51:56,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:51:56,775 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:51:56,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-11-03 03:51:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:57,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:51:57,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:51:58,442 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 80 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:51:58,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:51:59,648 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 80 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:51:59,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993071424] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:51:59,648 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 03:51:59,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 7, 7] total 29 [2022-11-03 03:51:59,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220838513] [2022-11-03 03:51:59,649 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 03:51:59,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-03 03:51:59,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:51:59,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-03 03:51:59,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=740, Unknown=0, NotChecked=0, Total=812 [2022-11-03 03:51:59,655 INFO L87 Difference]: Start difference. First operand 6491 states and 8297 transitions. Second operand has 29 states, 29 states have (on average 46.62068965517241) internal successors, (1352), 29 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:35,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:35,926 INFO L93 Difference]: Finished difference Result 55503 states and 72809 transitions. [2022-11-03 03:52:35,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2022-11-03 03:52:35,928 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 46.62068965517241) internal successors, (1352), 29 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:52:35,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:35,956 INFO L225 Difference]: With dead ends: 55503 [2022-11-03 03:52:35,956 INFO L226 Difference]: Without dead ends: 52674 [2022-11-03 03:52:35,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2021 GetRequests, 1827 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14417 ImplicationChecksByTransitivity, 30.8s TimeCoverageRelationStatistics Valid=7397, Invalid=30823, Unknown=0, NotChecked=0, Total=38220 [2022-11-03 03:52:35,965 INFO L413 NwaCegarLoop]: 1120 mSDtfsCounter, 26232 mSDsluCounter, 13838 mSDsCounter, 0 mSdLazyCounter, 2987 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26232 SdHoareTripleChecker+Valid, 14958 SdHoareTripleChecker+Invalid, 3184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 2987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:52:35,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26232 Valid, 14958 Invalid, 3184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 2987 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-03 03:52:35,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52674 states. [2022-11-03 03:52:36,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52674 to 7608. [2022-11-03 03:52:36,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7608 states, 7607 states have (on average 1.2865781517023793) internal successors, (9787), 7607 states have internal predecessors, (9787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:36,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7608 states to 7608 states and 9787 transitions. [2022-11-03 03:52:36,235 INFO L78 Accepts]: Start accepts. Automaton has 7608 states and 9787 transitions. Word has length 310 [2022-11-03 03:52:36,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:36,235 INFO L495 AbstractCegarLoop]: Abstraction has 7608 states and 9787 transitions. [2022-11-03 03:52:36,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 46.62068965517241) internal successors, (1352), 29 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:36,235 INFO L276 IsEmpty]: Start isEmpty. Operand 7608 states and 9787 transitions. [2022-11-03 03:52:36,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:52:36,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:36,241 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:52:36,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2022-11-03 03:52:36,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (89)] Ended with exit code 0 [2022-11-03 03:52:36,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (88)] Forceful destruction successful, exit code 0 [2022-11-03 03:52:36,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:52:36,842 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:52:36,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:36,842 INFO L85 PathProgramCache]: Analyzing trace with hash 153384959, now seen corresponding path program 1 times [2022-11-03 03:52:36,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:52:36,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [313091586] [2022-11-03 03:52:36,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:36,844 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:52:36,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:52:36,845 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:52:36,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2022-11-03 03:52:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:37,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:52:37,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:52:38,435 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 78 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:52:38,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:52:39,553 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 78 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:52:39,554 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:52:39,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [313091586] [2022-11-03 03:52:39,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [313091586] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:52:39,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [44514474] [2022-11-03 03:52:39,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:39,554 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:52:39,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:52:39,555 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:52:39,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (92)] Waiting until timeout for monitored process [2022-11-03 03:52:41,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:41,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 03:52:41,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:52:43,815 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:52:43,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:52:46,946 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:52:46,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [44514474] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:52:46,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273590267] [2022-11-03 03:52:46,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:46,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:52:46,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:52:46,947 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:52:46,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-11-03 03:52:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:47,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:52:47,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:52:48,460 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 78 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:52:48,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:52:49,574 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 78 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:52:49,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273590267] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:52:49,574 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 03:52:49,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 20 [2022-11-03 03:52:49,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086790569] [2022-11-03 03:52:49,575 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 03:52:49,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-03 03:52:49,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:52:49,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-03 03:52:49,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-11-03 03:52:49,576 INFO L87 Difference]: Start difference. First operand 7608 states and 9787 transitions. Second operand has 20 states, 20 states have (on average 51.3) internal successors, (1026), 20 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:52,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:52,404 INFO L93 Difference]: Finished difference Result 54616 states and 71571 transitions. [2022-11-03 03:52:52,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 03:52:52,406 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 51.3) internal successors, (1026), 20 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:52:52,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:52,436 INFO L225 Difference]: With dead ends: 54616 [2022-11-03 03:52:52,436 INFO L226 Difference]: Without dead ends: 50686 [2022-11-03 03:52:52,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1874 GetRequests, 1837 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=241, Invalid=1241, Unknown=0, NotChecked=0, Total=1482 [2022-11-03 03:52:52,444 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 2431 mSDsluCounter, 11028 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2431 SdHoareTripleChecker+Valid, 11454 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 120 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:52:52,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2431 Valid, 11454 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 474 Invalid, 0 Unknown, 120 Unchecked, 1.1s Time] [2022-11-03 03:52:52,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50686 states. [2022-11-03 03:52:52,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50686 to 11552. [2022-11-03 03:52:52,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11552 states, 11551 states have (on average 1.2925287853865466) internal successors, (14930), 11551 states have internal predecessors, (14930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:52,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11552 states to 11552 states and 14930 transitions. [2022-11-03 03:52:52,872 INFO L78 Accepts]: Start accepts. Automaton has 11552 states and 14930 transitions. Word has length 310 [2022-11-03 03:52:52,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:52,872 INFO L495 AbstractCegarLoop]: Abstraction has 11552 states and 14930 transitions. [2022-11-03 03:52:52,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.3) internal successors, (1026), 20 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:52,873 INFO L276 IsEmpty]: Start isEmpty. Operand 11552 states and 14930 transitions. [2022-11-03 03:52:52,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:52:52,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:52,880 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:52:52,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2022-11-03 03:52:53,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (92)] Forceful destruction successful, exit code 0 [2022-11-03 03:52:53,297 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (91)] Ended with exit code 0 [2022-11-03 03:52:53,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:52:53,481 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:52:53,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:53,481 INFO L85 PathProgramCache]: Analyzing trace with hash -989117507, now seen corresponding path program 1 times [2022-11-03 03:52:53,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:52:53,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1442914254] [2022-11-03 03:52:53,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:53,483 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:52:53,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:52:53,484 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:52:53,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (94)] Waiting until timeout for monitored process [2022-11-03 03:52:54,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:54,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:52:54,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:52:55,084 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 72 proven. 15 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:52:55,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:52:56,255 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 72 proven. 15 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:52:56,255 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:52:56,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1442914254] [2022-11-03 03:52:56,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1442914254] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:52:56,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1302651946] [2022-11-03 03:52:56,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:56,256 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:52:56,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:52:56,257 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:52:56,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (95)] Waiting until timeout for monitored process [2022-11-03 03:52:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:58,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 03:52:58,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:00,527 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:53:00,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:53:03,475 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:53:03,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1302651946] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:53:03,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583182999] [2022-11-03 03:53:03,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:03,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:53:03,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:53:03,477 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:53:03,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-11-03 03:53:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:04,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:53:04,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:04,995 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 72 proven. 15 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:53:04,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:53:06,062 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 72 proven. 15 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:53:06,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583182999] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:53:06,063 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 03:53:06,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 20 [2022-11-03 03:53:06,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385353506] [2022-11-03 03:53:06,063 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 03:53:06,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-03 03:53:06,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:06,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-03 03:53:06,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-11-03 03:53:06,066 INFO L87 Difference]: Start difference. First operand 11552 states and 14930 transitions. Second operand has 20 states, 20 states have (on average 51.3) internal successors, (1026), 20 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:08,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:08,935 INFO L93 Difference]: Finished difference Result 54556 states and 71473 transitions. [2022-11-03 03:53:08,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 03:53:08,936 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 51.3) internal successors, (1026), 20 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:53:08,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:08,963 INFO L225 Difference]: With dead ends: 54556 [2022-11-03 03:53:08,963 INFO L226 Difference]: Without dead ends: 50638 [2022-11-03 03:53:08,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1874 GetRequests, 1837 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=241, Invalid=1241, Unknown=0, NotChecked=0, Total=1482 [2022-11-03 03:53:08,971 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 2279 mSDsluCounter, 13005 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2279 SdHoareTripleChecker+Valid, 13437 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 124 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:08,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2279 Valid, 13437 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 493 Invalid, 0 Unknown, 124 Unchecked, 1.1s Time] [2022-11-03 03:53:08,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50638 states. [2022-11-03 03:53:09,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50638 to 11588. [2022-11-03 03:53:09,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11588 states, 11587 states have (on average 1.292482955035816) internal successors, (14976), 11587 states have internal predecessors, (14976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:09,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11588 states to 11588 states and 14976 transitions. [2022-11-03 03:53:09,418 INFO L78 Accepts]: Start accepts. Automaton has 11588 states and 14976 transitions. Word has length 310 [2022-11-03 03:53:09,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:09,418 INFO L495 AbstractCegarLoop]: Abstraction has 11588 states and 14976 transitions. [2022-11-03 03:53:09,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.3) internal successors, (1026), 20 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:09,419 INFO L276 IsEmpty]: Start isEmpty. Operand 11588 states and 14976 transitions. [2022-11-03 03:53:09,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:53:09,429 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:09,430 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:09,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2022-11-03 03:53:09,652 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (95)] Ended with exit code 0 [2022-11-03 03:53:09,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (94)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:10,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:10,043 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:10,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:10,044 INFO L85 PathProgramCache]: Analyzing trace with hash -101894661, now seen corresponding path program 1 times [2022-11-03 03:53:10,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:10,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [210086085] [2022-11-03 03:53:10,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:10,045 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:10,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:10,046 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:10,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (97)] Waiting until timeout for monitored process [2022-11-03 03:53:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:10,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:53:10,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:11,651 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 70 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:53:11,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:53:12,796 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 70 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:53:12,797 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:12,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [210086085] [2022-11-03 03:53:12,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [210086085] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:53:12,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2097038785] [2022-11-03 03:53:12,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:12,797 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:53:12,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:53:12,798 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:53:12,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (98)] Waiting until timeout for monitored process [2022-11-03 03:53:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:14,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 03:53:14,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:17,102 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:53:17,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:53:20,209 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:53:20,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2097038785] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:53:20,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058675911] [2022-11-03 03:53:20,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:20,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:53:20,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:53:20,211 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:53:20,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-11-03 03:53:20,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:20,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:53:20,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:21,655 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 70 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:53:21,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:53:22,762 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 70 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:53:22,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058675911] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:53:22,763 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 03:53:22,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 20 [2022-11-03 03:53:22,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736413531] [2022-11-03 03:53:22,763 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 03:53:22,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-03 03:53:22,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:22,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-03 03:53:22,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-11-03 03:53:22,765 INFO L87 Difference]: Start difference. First operand 11588 states and 14976 transitions. Second operand has 20 states, 20 states have (on average 51.3) internal successors, (1026), 20 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:25,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:25,206 INFO L93 Difference]: Finished difference Result 47684 states and 62199 transitions. [2022-11-03 03:53:25,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-03 03:53:25,208 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 51.3) internal successors, (1026), 20 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:53:25,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:25,229 INFO L225 Difference]: With dead ends: 47684 [2022-11-03 03:53:25,229 INFO L226 Difference]: Without dead ends: 43770 [2022-11-03 03:53:25,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1871 GetRequests, 1837 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=219, Invalid=1041, Unknown=0, NotChecked=0, Total=1260 [2022-11-03 03:53:25,236 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 1905 mSDsluCounter, 10596 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1905 SdHoareTripleChecker+Valid, 11028 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 147 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:25,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1905 Valid, 11028 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 450 Invalid, 0 Unknown, 147 Unchecked, 0.9s Time] [2022-11-03 03:53:25,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43770 states. [2022-11-03 03:53:25,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43770 to 11600. [2022-11-03 03:53:25,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11600 states, 11599 states have (on average 1.2920079317182516) internal successors, (14986), 11599 states have internal predecessors, (14986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:25,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11600 states to 11600 states and 14986 transitions. [2022-11-03 03:53:25,548 INFO L78 Accepts]: Start accepts. Automaton has 11600 states and 14986 transitions. Word has length 310 [2022-11-03 03:53:25,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:25,549 INFO L495 AbstractCegarLoop]: Abstraction has 11600 states and 14986 transitions. [2022-11-03 03:53:25,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.3) internal successors, (1026), 20 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:25,549 INFO L276 IsEmpty]: Start isEmpty. Operand 11600 states and 14986 transitions. [2022-11-03 03:53:25,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:53:25,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:25,562 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:25,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:25,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (97)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:25,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (98)] Ended with exit code 0 [2022-11-03 03:53:26,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,97 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,98 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 03:53:26,175 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:26,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:26,176 INFO L85 PathProgramCache]: Analyzing trace with hash -24993863, now seen corresponding path program 1 times [2022-11-03 03:53:26,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:26,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1640139032] [2022-11-03 03:53:26,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:26,177 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:26,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:26,178 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:26,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (100)] Waiting until timeout for monitored process [2022-11-03 03:53:26,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:26,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 03:53:26,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:29,053 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 68 proven. 19 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:53:29,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:53:34,211 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 68 proven. 19 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:53:34,212 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:34,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1640139032] [2022-11-03 03:53:34,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1640139032] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:53:34,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [526683218] [2022-11-03 03:53:34,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:34,214 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:53:34,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:53:34,215 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:53:34,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (101)] Waiting until timeout for monitored process [2022-11-03 03:53:35,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:35,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 03:53:35,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:38,393 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:53:38,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:53:41,555 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:53:41,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [526683218] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:53:41,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91579680] [2022-11-03 03:53:41,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:41,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:53:41,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:53:41,556 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:53:41,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-11-03 03:53:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:42,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:53:42,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:43,156 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 66 proven. 21 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:53:43,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:53:44,403 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 66 proven. 21 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:53:44,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91579680] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:53:44,404 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 03:53:44,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 28 [2022-11-03 03:53:44,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559420346] [2022-11-03 03:53:44,405 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 03:53:44,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-03 03:53:44,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:44,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-03 03:53:44,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2022-11-03 03:53:44,406 INFO L87 Difference]: Start difference. First operand 11600 states and 14986 transitions. Second operand has 28 states, 28 states have (on average 52.0) internal successors, (1456), 28 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:51,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:51,335 INFO L93 Difference]: Finished difference Result 100332 states and 131693 transitions. [2022-11-03 03:53:51,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-03 03:53:51,337 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 52.0) internal successors, (1456), 28 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:53:51,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:51,381 INFO L225 Difference]: With dead ends: 100332 [2022-11-03 03:53:51,381 INFO L226 Difference]: Without dead ends: 96422 [2022-11-03 03:53:51,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1893 GetRequests, 1829 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=612, Invalid=3678, Unknown=0, NotChecked=0, Total=4290 [2022-11-03 03:53:51,388 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 3279 mSDsluCounter, 26274 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3279 SdHoareTripleChecker+Valid, 26838 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 345 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:51,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3279 Valid, 26838 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1111 Invalid, 0 Unknown, 345 Unchecked, 2.2s Time] [2022-11-03 03:53:51,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96422 states. [2022-11-03 03:53:51,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96422 to 11612. [2022-11-03 03:53:51,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11612 states, 11611 states have (on average 1.291533890276462) internal successors, (14996), 11611 states have internal predecessors, (14996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:51,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11612 states to 11612 states and 14996 transitions. [2022-11-03 03:53:51,866 INFO L78 Accepts]: Start accepts. Automaton has 11612 states and 14996 transitions. Word has length 310 [2022-11-03 03:53:51,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:51,866 INFO L495 AbstractCegarLoop]: Abstraction has 11612 states and 14996 transitions. [2022-11-03 03:53:51,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 52.0) internal successors, (1456), 28 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:51,867 INFO L276 IsEmpty]: Start isEmpty. Operand 11612 states and 14996 transitions. [2022-11-03 03:53:51,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:53:51,876 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:51,876 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:51,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (100)] Ended with exit code 0 [2022-11-03 03:53:52,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:52,288 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (101)] Ended with exit code 0 [2022-11-03 03:53:52,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,102 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,101 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 03:53:52,479 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:52,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:52,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1883463927, now seen corresponding path program 1 times [2022-11-03 03:53:52,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:52,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1275030554] [2022-11-03 03:53:52,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:52,482 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:52,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:52,482 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:52,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (103)] Waiting until timeout for monitored process [2022-11-03 03:53:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:53,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:53:53,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:54,202 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 66 proven. 21 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:53:54,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:53:55,319 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 66 proven. 21 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:53:55,319 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:55,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1275030554] [2022-11-03 03:53:55,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1275030554] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:53:55,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1266282434] [2022-11-03 03:53:55,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:55,320 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:53:55,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:53:55,321 INFO L229 MonitoredProcess]: Starting monitored process 104 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:53:55,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (104)] Waiting until timeout for monitored process [2022-11-03 03:53:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:57,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 03:53:57,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:59,631 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:53:59,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:54:02,706 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:54:02,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1266282434] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:54:02,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023101828] [2022-11-03 03:54:02,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:02,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:54:02,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:54:02,708 INFO L229 MonitoredProcess]: Starting monitored process 105 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:54:02,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-11-03 03:54:03,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:03,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:54:03,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:54:04,142 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 66 proven. 21 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:54:04,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:54:05,239 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 66 proven. 21 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:54:05,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023101828] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:54:05,240 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 03:54:05,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 20 [2022-11-03 03:54:05,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146567079] [2022-11-03 03:54:05,240 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 03:54:05,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-03 03:54:05,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:54:05,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-03 03:54:05,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-11-03 03:54:05,242 INFO L87 Difference]: Start difference. First operand 11612 states and 14996 transitions. Second operand has 20 states, 20 states have (on average 51.3) internal successors, (1026), 20 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:54:07,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:07,772 INFO L93 Difference]: Finished difference Result 47668 states and 62159 transitions. [2022-11-03 03:54:07,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-03 03:54:07,773 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 51.3) internal successors, (1026), 20 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:54:07,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:07,794 INFO L225 Difference]: With dead ends: 47668 [2022-11-03 03:54:07,795 INFO L226 Difference]: Without dead ends: 43762 [2022-11-03 03:54:07,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1871 GetRequests, 1837 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=219, Invalid=1041, Unknown=0, NotChecked=0, Total=1260 [2022-11-03 03:54:07,802 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 2061 mSDsluCounter, 9618 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2061 SdHoareTripleChecker+Valid, 10050 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 147 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:07,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2061 Valid, 10050 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 491 Invalid, 0 Unknown, 147 Unchecked, 1.0s Time] [2022-11-03 03:54:07,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43762 states. [2022-11-03 03:54:08,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43762 to 11624. [2022-11-03 03:54:08,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11624 states, 11623 states have (on average 1.2910608276692765) internal successors, (15006), 11623 states have internal predecessors, (15006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:54:08,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11624 states to 11624 states and 15006 transitions. [2022-11-03 03:54:08,122 INFO L78 Accepts]: Start accepts. Automaton has 11624 states and 15006 transitions. Word has length 310 [2022-11-03 03:54:08,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:08,123 INFO L495 AbstractCegarLoop]: Abstraction has 11624 states and 15006 transitions. [2022-11-03 03:54:08,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.3) internal successors, (1026), 20 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:54:08,123 INFO L276 IsEmpty]: Start isEmpty. Operand 11624 states and 15006 transitions. [2022-11-03 03:54:08,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:54:08,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:08,130 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:54:08,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2022-11-03 03:54:08,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (103)] Ended with exit code 0 [2022-11-03 03:54:08,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (104)] Ended with exit code 0 [2022-11-03 03:54:08,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,103 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,104 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 03:54:08,731 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:54:08,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:08,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1457563211, now seen corresponding path program 1 times [2022-11-03 03:54:08,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:54:08,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1189537444] [2022-11-03 03:54:08,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:08,733 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:54:08,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:54:08,734 INFO L229 MonitoredProcess]: Starting monitored process 106 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:54:08,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (106)] Waiting until timeout for monitored process [2022-11-03 03:54:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:09,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:54:09,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:54:10,342 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 64 proven. 23 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:54:10,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:54:11,458 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 64 proven. 23 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:54:11,458 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:54:11,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1189537444] [2022-11-03 03:54:11,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1189537444] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:54:11,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2029664568] [2022-11-03 03:54:11,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:11,459 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:54:11,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:54:11,460 INFO L229 MonitoredProcess]: Starting monitored process 107 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:54:11,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (107)] Waiting until timeout for monitored process [2022-11-03 03:54:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:13,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 03:54:13,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:54:15,632 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:54:15,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:54:18,650 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:54:18,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2029664568] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:54:18,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226963823] [2022-11-03 03:54:18,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:18,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:54:18,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:54:18,652 INFO L229 MonitoredProcess]: Starting monitored process 108 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:54:18,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-11-03 03:54:19,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:19,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:54:19,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:54:20,090 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 64 proven. 23 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:54:20,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:54:21,217 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 64 proven. 23 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:54:21,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226963823] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:54:21,218 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 03:54:21,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 20 [2022-11-03 03:54:21,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527000030] [2022-11-03 03:54:21,218 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 03:54:21,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-03 03:54:21,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:54:21,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-03 03:54:21,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-11-03 03:54:21,221 INFO L87 Difference]: Start difference. First operand 11624 states and 15006 transitions. Second operand has 20 states, 20 states have (on average 51.3) internal successors, (1026), 20 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:54:23,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:23,736 INFO L93 Difference]: Finished difference Result 47660 states and 62139 transitions. [2022-11-03 03:54:23,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-03 03:54:23,738 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 51.3) internal successors, (1026), 20 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:54:23,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:23,763 INFO L225 Difference]: With dead ends: 47660 [2022-11-03 03:54:23,763 INFO L226 Difference]: Without dead ends: 43758 [2022-11-03 03:54:23,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1871 GetRequests, 1837 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=219, Invalid=1041, Unknown=0, NotChecked=0, Total=1260 [2022-11-03 03:54:23,773 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 1909 mSDsluCounter, 10665 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1909 SdHoareTripleChecker+Valid, 11097 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 141 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:23,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1909 Valid, 11097 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 484 Invalid, 0 Unknown, 141 Unchecked, 1.0s Time] [2022-11-03 03:54:23,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43758 states. [2022-11-03 03:54:24,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43758 to 11636. [2022-11-03 03:54:24,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11636 states, 11635 states have (on average 1.2905887408680705) internal successors, (15016), 11635 states have internal predecessors, (15016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:54:24,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11636 states to 11636 states and 15016 transitions. [2022-11-03 03:54:24,109 INFO L78 Accepts]: Start accepts. Automaton has 11636 states and 15016 transitions. Word has length 310 [2022-11-03 03:54:24,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:24,110 INFO L495 AbstractCegarLoop]: Abstraction has 11636 states and 15016 transitions. [2022-11-03 03:54:24,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.3) internal successors, (1026), 20 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:54:24,110 INFO L276 IsEmpty]: Start isEmpty. Operand 11636 states and 15016 transitions. [2022-11-03 03:54:24,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:54:24,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:24,117 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:54:24,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2022-11-03 03:54:24,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (106)] Ended with exit code 0 [2022-11-03 03:54:24,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (107)] Ended with exit code 0 [2022-11-03 03:54:24,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,106 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,107 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 03:54:24,718 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:54:24,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:24,718 INFO L85 PathProgramCache]: Analyzing trace with hash 2105436659, now seen corresponding path program 1 times [2022-11-03 03:54:24,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:54:24,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753554401] [2022-11-03 03:54:24,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:24,720 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:54:24,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:54:24,721 INFO L229 MonitoredProcess]: Starting monitored process 109 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:54:24,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (109)] Waiting until timeout for monitored process [2022-11-03 03:54:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:25,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 03:54:25,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:54:27,569 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 62 proven. 25 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:54:27,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:54:32,794 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 62 proven. 25 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:54:32,794 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:54:32,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [753554401] [2022-11-03 03:54:32,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [753554401] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:54:32,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1098557148] [2022-11-03 03:54:32,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:32,794 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:54:32,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:54:32,795 INFO L229 MonitoredProcess]: Starting monitored process 110 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:54:32,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (110)] Waiting until timeout for monitored process [2022-11-03 03:54:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:34,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 03:54:34,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:54:37,194 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:54:37,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:54:41,957 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:54:41,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1098557148] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:54:41,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164070947] [2022-11-03 03:54:41,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:41,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:54:41,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:54:41,959 INFO L229 MonitoredProcess]: Starting monitored process 111 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:54:41,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-11-03 03:54:42,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:42,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:54:42,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:54:43,718 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 56 proven. 31 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:54:43,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:54:45,038 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 56 proven. 31 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:54:45,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164070947] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:54:45,039 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 03:54:45,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 29 [2022-11-03 03:54:45,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941874558] [2022-11-03 03:54:45,039 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 03:54:45,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-03 03:54:45,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:54:45,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-03 03:54:45,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=733, Unknown=0, NotChecked=0, Total=812 [2022-11-03 03:54:45,042 INFO L87 Difference]: Start difference. First operand 11636 states and 15016 transitions. Second operand has 29 states, 29 states have (on average 51.48275862068966) internal successors, (1493), 29 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:54:50,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:50,621 INFO L93 Difference]: Finished difference Result 54736 states and 71871 transitions. [2022-11-03 03:54:50,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-03 03:54:50,623 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 51.48275862068966) internal successors, (1493), 29 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:54:50,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:50,652 INFO L225 Difference]: With dead ends: 54736 [2022-11-03 03:54:50,652 INFO L226 Difference]: Without dead ends: 50838 [2022-11-03 03:54:50,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1886 GetRequests, 1828 SyntacticMatches, 4 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=507, Invalid=2573, Unknown=0, NotChecked=0, Total=3080 [2022-11-03 03:54:50,664 INFO L413 NwaCegarLoop]: 840 mSDtfsCounter, 5832 mSDsluCounter, 13161 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5832 SdHoareTripleChecker+Valid, 14001 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 285 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:50,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5832 Valid, 14001 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 627 Invalid, 0 Unknown, 285 Unchecked, 1.4s Time] [2022-11-03 03:54:50,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50838 states. [2022-11-03 03:54:51,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50838 to 11684. [2022-11-03 03:54:51,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11684 states, 11683 states have (on average 1.2900796028417358) internal successors, (15072), 11683 states have internal predecessors, (15072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:54:51,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11684 states to 11684 states and 15072 transitions. [2022-11-03 03:54:51,059 INFO L78 Accepts]: Start accepts. Automaton has 11684 states and 15072 transitions. Word has length 310 [2022-11-03 03:54:51,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:51,059 INFO L495 AbstractCegarLoop]: Abstraction has 11684 states and 15072 transitions. [2022-11-03 03:54:51,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 51.48275862068966) internal successors, (1493), 29 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:54:51,060 INFO L276 IsEmpty]: Start isEmpty. Operand 11684 states and 15072 transitions. [2022-11-03 03:54:51,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:54:51,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:51,067 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:54:51,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2022-11-03 03:54:51,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (109)] Forceful destruction successful, exit code 0 [2022-11-03 03:54:51,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (110)] Ended with exit code 0 [2022-11-03 03:54:51,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,109 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,110 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 03:54:51,668 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:54:51,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:51,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1810194449, now seen corresponding path program 1 times [2022-11-03 03:54:51,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:54:51,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79941550] [2022-11-03 03:54:51,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:51,670 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:54:51,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:54:51,671 INFO L229 MonitoredProcess]: Starting monitored process 112 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:54:51,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (112)] Waiting until timeout for monitored process [2022-11-03 03:54:52,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:52,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-03 03:54:52,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:54:58,689 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 60 proven. 27 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:54:58,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:56:15,196 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 60 proven. 27 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:56:15,196 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:56:15,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79941550] [2022-11-03 03:56:15,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [79941550] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:56:15,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [513033902] [2022-11-03 03:56:15,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:15,197 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:56:15,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:56:15,199 INFO L229 MonitoredProcess]: Starting monitored process 113 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:56:15,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (113)] Waiting until timeout for monitored process [2022-11-03 03:56:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:16,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 03:56:16,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:56:18,044 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 44 proven. 13 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-03 03:56:18,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:56:20,496 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 44 proven. 13 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-03 03:56:20,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [513033902] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:56:20,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451206296] [2022-11-03 03:56:20,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:20,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:56:20,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:56:20,498 INFO L229 MonitoredProcess]: Starting monitored process 114 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:56:20,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-11-03 03:56:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:21,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:56:21,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:56:22,258 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 54 proven. 33 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:56:22,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:56:23,590 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 54 proven. 33 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:56:23,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451206296] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:56:23,590 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 03:56:23,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 8, 8] total 30 [2022-11-03 03:56:23,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137003874] [2022-11-03 03:56:23,591 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 03:56:23,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-03 03:56:23,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:56:23,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-03 03:56:23,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=791, Unknown=0, NotChecked=0, Total=870 [2022-11-03 03:56:23,594 INFO L87 Difference]: Start difference. First operand 11684 states and 15072 transitions. Second operand has 30 states, 30 states have (on average 46.96666666666667) internal successors, (1409), 30 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:56:35,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:35,042 INFO L93 Difference]: Finished difference Result 141220 states and 187721 transitions. [2022-11-03 03:56:35,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-11-03 03:56:35,043 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 46.96666666666667) internal successors, (1409), 30 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:56:35,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:35,114 INFO L225 Difference]: With dead ends: 141220 [2022-11-03 03:56:35,114 INFO L226 Difference]: Without dead ends: 133322 [2022-11-03 03:56:35,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1936 GetRequests, 1826 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3356 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=1537, Invalid=10895, Unknown=0, NotChecked=0, Total=12432 [2022-11-03 03:56:35,127 INFO L413 NwaCegarLoop]: 1753 mSDtfsCounter, 6065 mSDsluCounter, 38306 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6065 SdHoareTripleChecker+Valid, 40059 SdHoareTripleChecker+Invalid, 2049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 967 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:35,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6065 Valid, 40059 Invalid, 2049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1035 Invalid, 0 Unknown, 967 Unchecked, 1.8s Time] [2022-11-03 03:56:35,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133322 states. [2022-11-03 03:56:36,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133322 to 19832. [2022-11-03 03:56:36,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19832 states, 19831 states have (on average 1.2948414099137713) internal successors, (25678), 19831 states have internal predecessors, (25678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:56:36,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19832 states to 19832 states and 25678 transitions. [2022-11-03 03:56:36,209 INFO L78 Accepts]: Start accepts. Automaton has 19832 states and 25678 transitions. Word has length 310 [2022-11-03 03:56:36,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:36,210 INFO L495 AbstractCegarLoop]: Abstraction has 19832 states and 25678 transitions. [2022-11-03 03:56:36,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 46.96666666666667) internal successors, (1409), 30 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:56:36,210 INFO L276 IsEmpty]: Start isEmpty. Operand 19832 states and 25678 transitions. [2022-11-03 03:56:36,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:56:36,222 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:36,223 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:56:36,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (113)] Ended with exit code 0 [2022-11-03 03:56:36,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2022-11-03 03:56:36,640 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (112)] Ended with exit code 0 [2022-11-03 03:56:36,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,114 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,112 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:56:36,824 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:56:36,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:36,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1276447149, now seen corresponding path program 1 times [2022-11-03 03:56:36,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:56:36,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [702151787] [2022-11-03 03:56:36,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:36,826 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:56:36,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:56:36,827 INFO L229 MonitoredProcess]: Starting monitored process 115 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:56:36,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (115)] Waiting until timeout for monitored process [2022-11-03 03:56:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:37,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 03:56:37,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:56:39,055 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 58 proven. 29 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:56:39,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:56:40,724 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 58 proven. 29 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:56:40,725 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:56:40,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [702151787] [2022-11-03 03:56:40,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [702151787] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:56:40,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1803703126] [2022-11-03 03:56:40,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:40,725 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:56:40,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:56:40,726 INFO L229 MonitoredProcess]: Starting monitored process 116 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:56:40,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (116)] Waiting until timeout for monitored process [2022-11-03 03:56:42,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:42,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-03 03:56:42,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:56:46,033 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-03 03:56:46,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:56:48,419 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-03 03:56:48,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1803703126] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:56:48,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183983834] [2022-11-03 03:56:48,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:48,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:56:48,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:56:48,421 INFO L229 MonitoredProcess]: Starting monitored process 117 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:56:48,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-11-03 03:56:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:49,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:56:49,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:56:50,290 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 50 proven. 37 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:56:50,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:56:51,716 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 50 proven. 37 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:56:51,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183983834] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:56:51,717 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 03:56:51,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 17, 9, 8, 8] total 44 [2022-11-03 03:56:51,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46695713] [2022-11-03 03:56:51,717 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 03:56:51,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-03 03:56:51,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:56:51,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-03 03:56:51,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1761, Unknown=0, NotChecked=0, Total=1892 [2022-11-03 03:56:51,719 INFO L87 Difference]: Start difference. First operand 19832 states and 25678 transitions. Second operand has 44 states, 44 states have (on average 33.56818181818182) internal successors, (1477), 44 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:57:42,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:57:42,689 INFO L93 Difference]: Finished difference Result 155604 states and 207567 transitions. [2022-11-03 03:57:42,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 323 states. [2022-11-03 03:57:42,690 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 33.56818181818182) internal successors, (1477), 44 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 03:57:42,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:57:42,772 INFO L225 Difference]: With dead ends: 155604 [2022-11-03 03:57:42,772 INFO L226 Difference]: Without dead ends: 147610 [2022-11-03 03:57:42,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2191 GetRequests, 1833 SyntacticMatches, 0 SemanticMatches, 358 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50055 ImplicationChecksByTransitivity, 44.7s TimeCoverageRelationStatistics Valid=6822, Invalid=122418, Unknown=0, NotChecked=0, Total=129240 [2022-11-03 03:57:42,790 INFO L413 NwaCegarLoop]: 1919 mSDtfsCounter, 8969 mSDsluCounter, 50734 mSDsCounter, 0 mSdLazyCounter, 2623 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8969 SdHoareTripleChecker+Valid, 52653 SdHoareTripleChecker+Invalid, 8916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6268 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:57:42,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8969 Valid, 52653 Invalid, 8916 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 2623 Invalid, 0 Unknown, 6268 Unchecked, 4.0s Time] [2022-11-03 03:57:42,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147610 states. [2022-11-03 03:57:44,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147610 to 35128. [2022-11-03 03:57:44,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35128 states, 35127 states have (on average 1.2975204258832238) internal successors, (45578), 35127 states have internal predecessors, (45578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:57:44,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35128 states to 35128 states and 45578 transitions. [2022-11-03 03:57:44,282 INFO L78 Accepts]: Start accepts. Automaton has 35128 states and 45578 transitions. Word has length 310 [2022-11-03 03:57:44,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:57:44,282 INFO L495 AbstractCegarLoop]: Abstraction has 35128 states and 45578 transitions. [2022-11-03 03:57:44,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 33.56818181818182) internal successors, (1477), 44 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:57:44,282 INFO L276 IsEmpty]: Start isEmpty. Operand 35128 states and 45578 transitions. [2022-11-03 03:57:44,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 03:57:44,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:57:44,304 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:57:44,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2022-11-03 03:57:44,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (115)] Ended with exit code 0 [2022-11-03 03:57:44,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (116)] Ended with exit code 0 [2022-11-03 03:57:44,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 117 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,115 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,116 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 03:57:44,905 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:57:44,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:57:44,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1704805649, now seen corresponding path program 1 times [2022-11-03 03:57:44,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:57:44,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [630506494] [2022-11-03 03:57:44,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:57:44,907 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:57:44,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:57:44,908 INFO L229 MonitoredProcess]: Starting monitored process 118 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:57:44,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (118)] Waiting until timeout for monitored process [2022-11-03 03:57:45,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:57:45,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 03:57:45,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:57:47,876 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 52 proven. 35 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:57:47,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:57:52,196 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 52 proven. 35 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:57:52,196 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:57:52,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [630506494] [2022-11-03 03:57:52,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [630506494] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:57:52,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1836917637] [2022-11-03 03:57:52,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:57:52,197 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:57:52,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:57:52,198 INFO L229 MonitoredProcess]: Starting monitored process 119 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:57:52,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54277afc-fe7d-4b1b-a99c-16b6e6f9276d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (119)] Waiting until timeout for monitored process [2022-11-03 03:57:53,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:57:54,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-03 03:57:54,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:57:55,773 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 46 proven. 11 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-03 03:57:55,774 INFO L328 TraceCheckSpWp]: Computing backward predicates...