./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/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_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/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_3f99f177-74b3-451e-8a97-2d3a4b972be4/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 0842e496ceaac3d13d858cc0582a001755cc3c52e4d707c236161f2153e0d0c9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:30:24,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:30:24,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:30:24,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:30:24,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:30:24,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:30:24,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:30:24,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:30:24,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:30:24,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:30:24,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:30:24,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:30:24,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:30:24,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:30:24,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:30:24,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:30:24,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:30:24,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:30:24,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:30:24,230 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:30:24,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:30:24,233 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:30:24,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:30:24,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:30:24,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:30:24,240 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:30:24,241 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:30:24,242 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:30:24,242 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:30:24,244 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:30:24,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:30:24,245 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:30:24,246 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:30:24,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:30:24,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:30:24,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:30:24,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:30:24,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:30:24,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:30:24,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:30:24,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:30:24,253 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:30:24,281 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:30:24,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:30:24,281 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:30:24,282 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:30:24,282 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:30:24,283 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:30:24,283 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:30:24,283 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:30:24,283 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:30:24,284 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:30:24,284 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:30:24,284 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:30:24,284 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:30:24,284 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:30:24,285 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:30:24,285 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:30:24,285 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:30:24,285 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:30:24,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:30:24,286 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:30:24,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:30:24,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:30:24,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:30:24,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:30:24,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:30:24,288 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:30:24,288 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:30:24,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:30:24,288 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:30:24,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:30:24,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:30:24,289 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:30:24,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:30:24,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:30:24,290 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:30:24,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:30:24,290 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:30:24,291 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:30:24,291 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_3f99f177-74b3-451e-8a97-2d3a4b972be4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0842e496ceaac3d13d858cc0582a001755cc3c52e4d707c236161f2153e0d0c9 [2022-11-03 02:30:24,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:30:24,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:30:24,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:30:24,642 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:30:24,647 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:30:24,649 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal3.c [2022-11-03 02:30:24,750 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/data/34636b330/86556104dc124fc58fbb519f4fd3339c/FLAGf6acea7cf [2022-11-03 02:30:25,438 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:30:25,455 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal3.c [2022-11-03 02:30:25,488 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/data/34636b330/86556104dc124fc58fbb519f4fd3339c/FLAGf6acea7cf [2022-11-03 02:30:25,648 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/data/34636b330/86556104dc124fc58fbb519f4fd3339c [2022-11-03 02:30:25,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:30:25,653 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:30:25,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:30:25,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:30:25,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:30:25,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:30:25" (1/1) ... [2022-11-03 02:30:25,669 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67435219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:30:25, skipping insertion in model container [2022-11-03 02:30:25,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:30:25" (1/1) ... [2022-11-03 02:30:25,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:30:25,776 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:30:26,078 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_3f99f177-74b3-451e-8a97-2d3a4b972be4/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal3.c[1107,1120] [2022-11-03 02:30:26,467 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:30:26,483 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:30:26,500 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_3f99f177-74b3-451e-8a97-2d3a4b972be4/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal3.c[1107,1120] [2022-11-03 02:30:26,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:30:26,720 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:30:26,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:30:26 WrapperNode [2022-11-03 02:30:26,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:30:26,722 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:30:26,722 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:30:26,722 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:30:26,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:30:26" (1/1) ... [2022-11-03 02:30:26,790 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:30:26" (1/1) ... [2022-11-03 02:30:27,094 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2098 [2022-11-03 02:30:27,094 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:30:27,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:30:27,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:30:27,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:30:27,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:30:26" (1/1) ... [2022-11-03 02:30:27,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:30:26" (1/1) ... [2022-11-03 02:30:27,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:30:26" (1/1) ... [2022-11-03 02:30:27,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:30:26" (1/1) ... [2022-11-03 02:30:27,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:30:26" (1/1) ... [2022-11-03 02:30:27,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:30:26" (1/1) ... [2022-11-03 02:30:27,249 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:30:26" (1/1) ... [2022-11-03 02:30:27,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:30:26" (1/1) ... [2022-11-03 02:30:27,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:30:27,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:30:27,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:30:27,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:30:27,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:30:26" (1/1) ... [2022-11-03 02:30:27,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:30:27,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:30:27,346 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:30:27,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:30:27,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:30:27,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:30:28,037 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:30:28,040 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:30:35,554 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:30:41,844 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:30:41,844 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:30:41,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:30:41 BoogieIcfgContainer [2022-11-03 02:30:41,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:30:41,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:30:41,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:30:41,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:30:41,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:30:25" (1/3) ... [2022-11-03 02:30:41,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18fee32f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:30:41, skipping insertion in model container [2022-11-03 02:30:41,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:30:26" (2/3) ... [2022-11-03 02:30:41,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18fee32f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:30:41, skipping insertion in model container [2022-11-03 02:30:41,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:30:41" (3/3) ... [2022-11-03 02:30:41,864 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal3.c [2022-11-03 02:30:41,887 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:30:41,888 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:30:41,944 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:30:41,953 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;@192ff798, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:30:41,953 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:30:41,958 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:30:41,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 02:30:41,966 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:41,966 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 02:30:41,967 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:30:41,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:41,974 INFO L85 PathProgramCache]: Analyzing trace with hash 24975320, now seen corresponding path program 1 times [2022-11-03 02:30:41,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:30:41,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979317495] [2022-11-03 02:30:41,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:41,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:32:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:32:11,488 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:33:34,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:33:34,158 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 02:33:34,161 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:33:34,162 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 02:33:34,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:33:34,171 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-03 02:33:34,177 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:33:34,270 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:33:34,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:33:34 BoogieIcfgContainer [2022-11-03 02:33:34,324 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:33:34,328 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:33:34,328 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:33:34,328 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:33:34,330 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:30:41" (3/4) ... [2022-11-03 02:33:34,334 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 02:33:34,335 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:33:34,336 INFO L158 Benchmark]: Toolchain (without parser) took 188682.77ms. Allocated memory was 119.5MB in the beginning and 3.8GB in the end (delta: 3.7GB). Free memory was 80.7MB in the beginning and 2.8GB in the end (delta: -2.7GB). Peak memory consumption was 973.5MB. Max. memory is 16.1GB. [2022-11-03 02:33:34,336 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 119.5MB. Free memory is still 100.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:33:34,337 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1066.01ms. Allocated memory is still 119.5MB. Free memory was 80.5MB in the beginning and 49.6MB in the end (delta: 30.8MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-03 02:33:34,338 INFO L158 Benchmark]: Boogie Procedure Inliner took 372.88ms. Allocated memory is still 119.5MB. Free memory was 49.1MB in the beginning and 60.3MB in the end (delta: -11.3MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. [2022-11-03 02:33:34,341 INFO L158 Benchmark]: Boogie Preprocessor took 200.99ms. Allocated memory is still 119.5MB. Free memory was 60.3MB in the beginning and 44.0MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-03 02:33:34,343 INFO L158 Benchmark]: RCFGBuilder took 14550.57ms. Allocated memory was 119.5MB in the beginning and 956.3MB in the end (delta: 836.8MB). Free memory was 44.0MB in the beginning and 418.8MB in the end (delta: -374.9MB). Peak memory consumption was 568.4MB. Max. memory is 16.1GB. [2022-11-03 02:33:34,345 INFO L158 Benchmark]: TraceAbstraction took 172474.67ms. Allocated memory was 956.3MB in the beginning and 3.8GB in the end (delta: 2.9GB). Free memory was 417.8MB in the beginning and 2.8GB in the end (delta: -2.4GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. [2022-11-03 02:33:34,346 INFO L158 Benchmark]: Witness Printer took 7.21ms. Allocated memory is still 3.8GB. Free memory was 2.8GB in the beginning and 2.8GB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:33:34,351 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 119.5MB. Free memory is still 100.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1066.01ms. Allocated memory is still 119.5MB. Free memory was 80.5MB in the beginning and 49.6MB in the end (delta: 30.8MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 372.88ms. Allocated memory is still 119.5MB. Free memory was 49.1MB in the beginning and 60.3MB in the end (delta: -11.3MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 200.99ms. Allocated memory is still 119.5MB. Free memory was 60.3MB in the beginning and 44.0MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * RCFGBuilder took 14550.57ms. Allocated memory was 119.5MB in the beginning and 956.3MB in the end (delta: 836.8MB). Free memory was 44.0MB in the beginning and 418.8MB in the end (delta: -374.9MB). Peak memory consumption was 568.4MB. Max. memory is 16.1GB. * TraceAbstraction took 172474.67ms. Allocated memory was 956.3MB in the beginning and 3.8GB in the end (delta: 2.9GB). Free memory was 417.8MB in the beginning and 2.8GB in the end (delta: -2.4GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. * Witness Printer took 7.21ms. Allocated memory is still 3.8GB. Free memory was 2.8GB in the beginning and 2.8GB in the end (delta: 1.0MB). 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 197, overapproximation of bitwiseAnd at line 159, overapproximation of bitwiseComplement at line 191, overapproximation of bitwiseXOr at line 200. 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_15 mask_SORT_15 = (SORT_15)-1 >> (sizeof(SORT_15) * 8 - 5); [L35] const SORT_15 msb_SORT_15 = (SORT_15)1 << (5 - 1); [L37] const SORT_18 mask_SORT_18 = (SORT_18)-1 >> (sizeof(SORT_18) * 8 - 8); [L38] const SORT_18 msb_SORT_18 = (SORT_18)1 << (8 - 1); [L40] const SORT_113 mask_SORT_113 = (SORT_113)-1 >> (sizeof(SORT_113) * 8 - 4); [L41] const SORT_113 msb_SORT_113 = (SORT_113)1 << (4 - 1); [L43] const SORT_153 mask_SORT_153 = (SORT_153)-1 >> (sizeof(SORT_153) * 8 - 6); [L44] const SORT_153 msb_SORT_153 = (SORT_153)1 << (6 - 1); [L46] const SORT_155 mask_SORT_155 = (SORT_155)-1 >> (sizeof(SORT_155) * 8 - 7); [L47] const SORT_155 msb_SORT_155 = (SORT_155)1 << (7 - 1); [L49] const SORT_158 mask_SORT_158 = (SORT_158)-1 >> (sizeof(SORT_158) * 8 - 9); [L50] const SORT_158 msb_SORT_158 = (SORT_158)1 << (9 - 1); [L52] const SORT_160 mask_SORT_160 = (SORT_160)-1 >> (sizeof(SORT_160) * 8 - 10); [L53] const SORT_160 msb_SORT_160 = (SORT_160)1 << (10 - 1); [L55] const SORT_162 mask_SORT_162 = (SORT_162)-1 >> (sizeof(SORT_162) * 8 - 11); [L56] const SORT_162 msb_SORT_162 = (SORT_162)1 << (11 - 1); [L58] const SORT_164 mask_SORT_164 = (SORT_164)-1 >> (sizeof(SORT_164) * 8 - 12); [L59] const SORT_164 msb_SORT_164 = (SORT_164)1 << (12 - 1); [L61] const SORT_1 var_28 = 0; [L62] const SORT_8 var_32 = 1; [L63] const SORT_8 var_34 = 2; [L64] const SORT_8 var_38 = 3; [L65] const SORT_18 var_42 = 0; [L66] const SORT_6 var_48 = 0; [L67] const SORT_1 var_56 = 1; [L68] const SORT_8 var_64 = 5; [L69] const SORT_8 var_67 = 7; [L70] const SORT_8 var_70 = 6; [L71] const SORT_8 var_74 = 4; [L72] const SORT_6 var_80 = 2; [L73] const SORT_6 var_82 = 1; [L74] const SORT_6 var_92 = 3; [L75] const SORT_15 var_103 = 11; [L76] const SORT_15 var_105 = 10; [L77] const SORT_15 var_107 = 2; [L78] const SORT_15 var_109 = 9; [L79] const SORT_15 var_125 = 21; [L80] const SORT_15 var_127 = 20; [L81] const SORT_15 var_129 = 19; [L82] const SORT_15 var_131 = 18; [L83] const SORT_15 var_133 = 17; [L84] const SORT_15 var_135 = 16; [L85] const SORT_15 var_137 = 15; [L86] const SORT_15 var_139 = 14; [L87] const SORT_15 var_141 = 8; [L88] const SORT_15 var_143 = 6; [L89] const SORT_15 var_145 = 3; [L90] const SORT_15 var_147 = 5; [L91] const SORT_15 var_167 = 4; [L92] const SORT_15 var_169 = 1; [L93] const SORT_15 var_179 = 7; [L94] const SORT_15 var_197 = 13; [L95] const SORT_15 var_205 = 12; [L96] const SORT_15 var_226 = 23; [L97] const SORT_15 var_229 = 22; [L98] const SORT_15 var_238 = 25; [L99] const SORT_15 var_241 = 27; [L100] const SORT_15 var_244 = 26; [L101] const SORT_15 var_248 = 29; [L102] const SORT_15 var_251 = 31; [L103] const SORT_15 var_254 = 30; [L104] const SORT_15 var_258 = 28; [L105] const SORT_15 var_264 = 24; [L106] const SORT_153 var_287 = 0; [L107] const SORT_18 var_310 = 2; [L108] const SORT_18 var_313 = 1; [L109] const SORT_18 var_478 = 3; [L111] SORT_1 input_2; [L112] SORT_1 input_3; [L113] SORT_1 input_4; [L114] SORT_1 input_5; [L115] SORT_6 input_7; [L116] SORT_8 input_9; [L117] SORT_6 input_10; [L118] SORT_1 input_11; [L119] SORT_1 input_12; [L120] SORT_1 input_13; [L121] SORT_1 input_14; [L122] SORT_15 input_16; [L123] SORT_6 input_17; [L124] SORT_18 input_19; [L125] SORT_6 input_20; [L126] SORT_1 input_21; [L127] SORT_1 input_22; [L128] SORT_6 input_23; [L129] SORT_18 input_24; [L130] SORT_18 input_25; [L131] SORT_1 input_26; [L132] SORT_6 input_27; [L134] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L135] SORT_18 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_18; [L136] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L137] SORT_6 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_6; [L138] SORT_1 state_329 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L139] SORT_18 state_380 = __VERIFIER_nondet_uchar() & mask_SORT_18; [L140] SORT_6 state_426 = __VERIFIER_nondet_uchar() & mask_SORT_6; [L142] SORT_1 init_30_arg_1 = var_28; [L143] state_29 = init_30_arg_1 [L144] SORT_18 init_44_arg_1 = var_42; [L145] state_43 = init_44_arg_1 [L146] SORT_1 init_46_arg_1 = var_28; [L147] state_45 = init_46_arg_1 [L148] SORT_6 init_50_arg_1 = var_48; [L149] state_49 = init_50_arg_1 [L150] SORT_1 init_330_arg_1 = var_28; [L151] state_329 = init_330_arg_1 [L152] SORT_18 init_381_arg_1 = var_42; [L153] state_380 = init_381_arg_1 [L154] SORT_6 init_427_arg_1 = var_48; [L155] state_426 = init_427_arg_1 VAL [init_30_arg_1=0, init_330_arg_1=0, init_381_arg_1=0, init_427_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_50_arg_1=0, mask_SORT_1=1, mask_SORT_113=15, mask_SORT_15=31, mask_SORT_153=63, mask_SORT_155=127, mask_SORT_158=511, mask_SORT_160=1023, mask_SORT_162=2047, mask_SORT_164=4095, mask_SORT_18=255, mask_SORT_6=3, mask_SORT_8=7, msb_SORT_1=1, msb_SORT_113=8, msb_SORT_15=16, msb_SORT_153=32, msb_SORT_155=64, msb_SORT_158=256, msb_SORT_160=512, msb_SORT_162=1024, msb_SORT_164=2048, msb_SORT_18=128, msb_SORT_6=2, msb_SORT_8=4, state_29=0, state_329=0, state_380=0, state_426=0, state_43=0, state_45=0, state_49=0, var_103=11, var_105=10, var_107=2, var_109=9, var_125=21, var_127=20, var_129=19, var_131=18, var_133=17, var_135=16, var_137=15, var_139=14, var_141=8, var_143=6, var_145=3, var_147=5, var_167=4, var_169=1, var_179=7, var_197=13, var_205=12, var_226=23, var_229=22, var_238=25, var_241=27, var_244=26, var_248=29, var_251=31, var_254=30, var_258=28, var_264=24, var_28=0, var_287=0, var_310=2, var_313=1, var_32=1, var_34=2, var_38=3, var_42=0, var_478=3, var_48=0, var_56=1, var_64=5, var_67=7, var_70=6, var_74=4, var_80=2, var_82=1, var_92=3] [L158] input_2 = __VERIFIER_nondet_uchar() [L159] input_2 = input_2 & mask_SORT_1 [L160] input_3 = __VERIFIER_nondet_uchar() [L161] input_3 = input_3 & mask_SORT_1 [L162] input_4 = __VERIFIER_nondet_uchar() [L163] input_5 = __VERIFIER_nondet_uchar() [L164] input_5 = input_5 & mask_SORT_1 [L165] input_7 = __VERIFIER_nondet_uchar() [L166] input_7 = input_7 & mask_SORT_6 [L167] input_9 = __VERIFIER_nondet_uchar() [L168] input_9 = input_9 & mask_SORT_8 [L169] input_10 = __VERIFIER_nondet_uchar() [L170] input_10 = input_10 & mask_SORT_6 [L171] input_11 = __VERIFIER_nondet_uchar() [L172] input_11 = input_11 & mask_SORT_1 [L173] input_12 = __VERIFIER_nondet_uchar() [L174] input_13 = __VERIFIER_nondet_uchar() [L175] input_14 = __VERIFIER_nondet_uchar() [L176] input_16 = __VERIFIER_nondet_uchar() [L177] input_16 = input_16 & mask_SORT_15 [L178] input_17 = __VERIFIER_nondet_uchar() [L179] input_19 = __VERIFIER_nondet_uchar() [L180] input_20 = __VERIFIER_nondet_uchar() [L181] input_21 = __VERIFIER_nondet_uchar() [L182] input_22 = __VERIFIER_nondet_uchar() [L183] input_23 = __VERIFIER_nondet_uchar() [L184] input_24 = __VERIFIER_nondet_uchar() [L185] input_25 = __VERIFIER_nondet_uchar() [L186] input_26 = __VERIFIER_nondet_uchar() [L187] input_27 = __VERIFIER_nondet_uchar() [L190] SORT_1 var_31_arg_0 = state_29; [L191] SORT_1 var_31 = ~var_31_arg_0; [L192] SORT_8 var_39_arg_0 = input_9; [L193] SORT_8 var_39_arg_1 = var_38; [L194] SORT_1 var_39 = var_39_arg_0 == var_39_arg_1; [L195] SORT_1 var_89_arg_0 = input_12; [L196] SORT_1 var_89_arg_1 = input_11; [L197] SORT_6 var_89 = ((SORT_6)var_89_arg_0 << 1) | var_89_arg_1; [L198] var_89 = var_89 & mask_SORT_6 [L199] SORT_6 var_90_arg_0 = var_89; [L200] var_90_arg_0 ^= var_90_arg_0 >> 4 [L201] var_90_arg_0 ^= var_90_arg_0 >> 2 [L202] var_90_arg_0 ^= var_90_arg_0 >> 1 [L203] SORT_1 var_90 = var_90_arg_0; [L204] SORT_8 var_35_arg_0 = input_9; [L205] SORT_8 var_35_arg_1 = var_34; [L206] SORT_1 var_35 = var_35_arg_0 == var_35_arg_1; [L207] SORT_8 var_33_arg_0 = input_9; [L208] SORT_8 var_33_arg_1 = var_32; [L209] SORT_1 var_33 = var_33_arg_0 == var_33_arg_1; [L210] SORT_8 var_293_arg_0 = input_9; [L211] SORT_8 var_293_arg_1 = var_74; [L212] SORT_1 var_293 = var_293_arg_0 == var_293_arg_1; [L213] SORT_8 var_292_arg_0 = input_9; [L214] SORT_8 var_292_arg_1 = var_64; [L215] SORT_1 var_292 = var_292_arg_0 == var_292_arg_1; [L216] SORT_1 var_294_arg_0 = var_293; [L217] SORT_1 var_294_arg_1 = var_292; [L218] SORT_6 var_294 = ((SORT_6)var_294_arg_0 << 1) | var_294_arg_1; [L219] var_294 = var_294 & mask_SORT_6 [L220] SORT_1 var_295_arg_0 = var_33; [L221] SORT_6 var_295_arg_1 = var_294; [L222] SORT_8 var_295 = ((SORT_8)var_295_arg_0 << 2) | var_295_arg_1; [L223] var_295 = var_295 & mask_SORT_8 [L224] SORT_1 var_296_arg_0 = var_35; [L225] SORT_8 var_296_arg_1 = var_295; [L226] SORT_113 var_296 = ((SORT_113)var_296_arg_0 << 3) | var_296_arg_1; [L227] var_296 = var_296 & mask_SORT_113 [L228] SORT_113 var_297_arg_0 = var_296; [L229] SORT_1 var_297 = var_297_arg_0 != 0; [L230] SORT_6 var_83_arg_0 = input_10; [L231] SORT_6 var_83_arg_1 = var_82; [L232] SORT_1 var_83 = var_83_arg_0 == var_83_arg_1; [L233] SORT_8 var_71_arg_0 = input_9; [L234] SORT_8 var_71_arg_1 = var_70; [L235] SORT_1 var_71 = var_71_arg_0 == var_71_arg_1; [L236] SORT_8 var_68_arg_0 = input_9; [L237] SORT_8 var_68_arg_1 = var_67; [L238] SORT_1 var_68 = var_68_arg_0 == var_68_arg_1; [L239] SORT_1 var_72_arg_0 = var_71; [L240] SORT_1 var_72_arg_1 = var_68; [L241] SORT_1 var_72 = var_72_arg_0 | var_72_arg_1; [L242] var_72 = var_72 & mask_SORT_1 [L243] SORT_8 var_65_arg_0 = input_9; [L244] SORT_8 var_65_arg_1 = var_64; [L245] SORT_1 var_65 = var_65_arg_0 == var_65_arg_1; [L246] SORT_8 var_75_arg_0 = input_9; [L247] SORT_8 var_75_arg_1 = var_74; [L248] SORT_1 var_75 = var_75_arg_0 == var_75_arg_1; [L249] SORT_1 var_76_arg_0 = var_65; [L250] SORT_1 var_76_arg_1 = var_75; [L251] SORT_6 var_76 = ((SORT_6)var_76_arg_0 << 1) | var_76_arg_1; [L252] var_76 = var_76 & mask_SORT_6 [L253] SORT_1 var_77_arg_0 = var_72; [L254] SORT_6 var_77_arg_1 = var_76; [L255] SORT_8 var_77 = ((SORT_8)var_77_arg_0 << 2) | var_77_arg_1; [L256] var_77 = var_77 & mask_SORT_8 [L257] SORT_8 var_78_arg_0 = var_77; [L258] SORT_1 var_78 = var_78_arg_0 != 0; [L259] SORT_1 var_69_arg_0 = var_68; [L260] SORT_1 var_69_arg_1 = var_56; [L261] SORT_1 var_69_arg_2 = var_56; [L262] EXPR var_69_arg_0 ? var_69_arg_1 : var_69_arg_2 [L262] SORT_1 var_69 = var_69_arg_0 ? var_69_arg_1 : var_69_arg_2; [L263] SORT_1 var_66_arg_0 = var_65; [L264] SORT_1 var_66_arg_1 = var_28; [L265] SORT_1 var_66_arg_2 = var_28; [L266] EXPR var_66_arg_0 ? var_66_arg_1 : var_66_arg_2 [L266] SORT_1 var_66 = var_66_arg_0 ? var_66_arg_1 : var_66_arg_2; [L267] SORT_1 var_73_arg_0 = var_72; [L268] SORT_1 var_73_arg_1 = var_69; [L269] SORT_1 var_73_arg_2 = var_66; [L270] EXPR var_73_arg_0 ? var_73_arg_1 : var_73_arg_2 [L270] SORT_1 var_73 = var_73_arg_0 ? var_73_arg_1 : var_73_arg_2; [L271] SORT_8 var_61_arg_0 = input_9; [L272] SORT_8 var_61_arg_1 = var_34; [L273] SORT_1 var_61 = var_61_arg_0 == var_61_arg_1; [L274] SORT_8 var_59_arg_0 = input_9; [L275] SORT_8 var_59_arg_1 = var_38; [L276] SORT_1 var_59 = var_59_arg_0 == var_59_arg_1; [L277] SORT_1 var_62_arg_0 = var_61; [L278] SORT_1 var_62_arg_1 = var_59; [L279] SORT_1 var_62 = var_62_arg_0 | var_62_arg_1; [L280] var_62 = var_62 & mask_SORT_1 [L281] SORT_1 var_60_arg_0 = var_59; [L282] SORT_1 var_60_arg_1 = var_56; [L283] SORT_1 var_60_arg_2 = var_28; [L284] EXPR var_60_arg_0 ? var_60_arg_1 : var_60_arg_2 [L284] SORT_1 var_60 = var_60_arg_0 ? var_60_arg_1 : var_60_arg_2; [L285] SORT_8 var_57_arg_0 = input_9; [L286] SORT_8 var_57_arg_1 = var_32; [L287] SORT_1 var_57 = var_57_arg_0 == var_57_arg_1; [L288] SORT_1 var_58_arg_0 = var_57; [L289] SORT_1 var_58_arg_1 = var_28; [L290] SORT_1 var_58_arg_2 = var_56; [L291] EXPR var_58_arg_0 ? var_58_arg_1 : var_58_arg_2 [L291] SORT_1 var_58 = var_58_arg_0 ? var_58_arg_1 : var_58_arg_2; [L292] SORT_1 var_63_arg_0 = var_62; [L293] SORT_1 var_63_arg_1 = var_60; [L294] SORT_1 var_63_arg_2 = var_58; [L295] EXPR var_63_arg_0 ? var_63_arg_1 : var_63_arg_2 [L295] SORT_1 var_63 = var_63_arg_0 ? var_63_arg_1 : var_63_arg_2; [L296] SORT_1 var_79_arg_0 = var_78; [L297] SORT_1 var_79_arg_1 = var_73; [L298] SORT_1 var_79_arg_2 = var_63; [L299] EXPR var_79_arg_0 ? var_79_arg_1 : var_79_arg_2 [L299] SORT_1 var_79 = var_79_arg_0 ? var_79_arg_1 : var_79_arg_2; [L300] var_79 = var_79 & mask_SORT_1 [L301] SORT_6 var_81_arg_0 = input_10; [L302] SORT_6 var_81_arg_1 = var_80; [L303] SORT_1 var_81 = var_81_arg_0 == var_81_arg_1; [L304] SORT_1 var_289_arg_0 = var_83; [L305] SORT_1 var_289_arg_1 = var_81; [L306] SORT_6 var_289 = ((SORT_6)var_289_arg_0 << 1) | var_289_arg_1; [L307] var_289 = var_289 & mask_SORT_6 [L308] SORT_6 var_290_arg_0 = var_289; [L309] SORT_1 var_290 = var_290_arg_0 != 0; [L310] SORT_1 var_291_arg_0 = var_79; [L311] SORT_1 var_291_arg_1 = var_290; [L312] SORT_1 var_291_arg_2 = var_28; [L313] EXPR var_291_arg_0 ? var_291_arg_1 : var_291_arg_2 [L313] SORT_1 var_291 = var_291_arg_0 ? var_291_arg_1 : var_291_arg_2; [L314] SORT_1 var_298_arg_0 = var_297; [L315] SORT_1 var_298_arg_1 = var_83; [L316] SORT_1 var_298_arg_2 = var_291; [L317] EXPR var_298_arg_0 ? var_298_arg_1 : var_298_arg_2 [L317] SORT_1 var_298 = var_298_arg_0 ? var_298_arg_1 : var_298_arg_2; [L318] SORT_6 var_93_arg_0 = input_7; [L319] SORT_6 var_93_arg_1 = var_92; [L320] SORT_1 var_93 = var_93_arg_0 == var_93_arg_1; [L321] SORT_1 var_299_arg_0 = var_298; [L322] SORT_1 var_299_arg_1 = var_93; [L323] SORT_6 var_299 = ((SORT_6)var_299_arg_0 << 1) | var_299_arg_1; [L324] var_299 = var_299 & mask_SORT_6 [L325] SORT_1 var_300_arg_0 = var_90; [L326] SORT_6 var_300_arg_1 = var_299; [L327] SORT_8 var_300 = ((SORT_8)var_300_arg_0 << 2) | var_300_arg_1; [L328] var_300 = var_300 & mask_SORT_8 [L329] SORT_8 var_301_arg_0 = var_300; [L330] SORT_1 var_301 = var_301_arg_0 != 0; [L331] SORT_1 var_302_arg_0 = input_13; [L332] SORT_1 var_302_arg_1 = var_301; [L333] SORT_6 var_302 = ((SORT_6)var_302_arg_0 << 1) | var_302_arg_1; [L334] var_302 = var_302 & mask_SORT_6 [L335] SORT_6 var_303_arg_0 = var_302; [L336] SORT_1 var_303 = var_303_arg_0 == mask_SORT_6; [L337] SORT_15 var_255_arg_0 = input_16; [L338] SORT_15 var_255_arg_1 = var_254; [L339] SORT_1 var_255 = var_255_arg_0 == var_255_arg_1; [L340] SORT_15 var_252_arg_0 = input_16; [L341] SORT_15 var_252_arg_1 = var_251; [L342] SORT_1 var_252 = var_252_arg_0 == var_252_arg_1; [L343] SORT_1 var_256_arg_0 = var_255; [L344] SORT_1 var_256_arg_1 = var_252; [L345] SORT_1 var_256 = var_256_arg_0 | var_256_arg_1; [L346] var_256 = var_256 & mask_SORT_1 [L347] SORT_15 var_249_arg_0 = input_16; [L348] SORT_15 var_249_arg_1 = var_248; [L349] SORT_1 var_249 = var_249_arg_0 == var_249_arg_1; [L350] SORT_15 var_259_arg_0 = input_16; [L351] SORT_15 var_259_arg_1 = var_258; [L352] SORT_1 var_259 = var_259_arg_0 == var_259_arg_1; [L353] SORT_1 var_260_arg_0 = var_249; [L354] SORT_1 var_260_arg_1 = var_259; [L355] SORT_6 var_260 = ((SORT_6)var_260_arg_0 << 1) | var_260_arg_1; [L356] var_260 = var_260 & mask_SORT_6 [L357] SORT_1 var_261_arg_0 = var_256; [L358] SORT_6 var_261_arg_1 = var_260; [L359] SORT_8 var_261 = ((SORT_8)var_261_arg_0 << 2) | var_261_arg_1; [L360] var_261 = var_261 & mask_SORT_8 [L361] SORT_8 var_262_arg_0 = var_261; [L362] SORT_1 var_262 = var_262_arg_0 != 0; [L363] SORT_15 var_245_arg_0 = input_16; [L364] SORT_15 var_245_arg_1 = var_244; [L365] SORT_1 var_245 = var_245_arg_0 == var_245_arg_1; [L366] SORT_15 var_242_arg_0 = input_16; [L367] SORT_15 var_242_arg_1 = var_241; [L368] SORT_1 var_242 = var_242_arg_0 == var_242_arg_1; [L369] SORT_1 var_246_arg_0 = var_245; [L370] SORT_1 var_246_arg_1 = var_242; [L371] SORT_1 var_246 = var_246_arg_0 | var_246_arg_1; [L372] var_246 = var_246 & mask_SORT_1 [L373] SORT_15 var_239_arg_0 = input_16; [L374] SORT_15 var_239_arg_1 = var_238; [L375] SORT_1 var_239 = var_239_arg_0 == var_239_arg_1; [L376] SORT_15 var_265_arg_0 = input_16; [L377] SORT_15 var_265_arg_1 = var_264; [L378] SORT_1 var_265 = var_265_arg_0 == var_265_arg_1; [L379] SORT_1 var_266_arg_0 = var_239; [L380] SORT_1 var_266_arg_1 = var_265; [L381] SORT_6 var_266 = ((SORT_6)var_266_arg_0 << 1) | var_266_arg_1; [L382] var_266 = var_266 & mask_SORT_6 [L383] SORT_1 var_267_arg_0 = var_246; [L384] SORT_6 var_267_arg_1 = var_266; [L385] SORT_8 var_267 = ((SORT_8)var_267_arg_0 << 2) | var_267_arg_1; [L386] var_267 = var_267 & mask_SORT_8 [L387] SORT_1 var_268_arg_0 = var_262; [L388] SORT_8 var_268_arg_1 = var_267; [L389] SORT_113 var_268 = ((SORT_113)var_268_arg_0 << 3) | var_268_arg_1; [L390] var_268 = var_268 & mask_SORT_113 [L391] SORT_113 var_269_arg_0 = var_268; [L392] SORT_1 var_269 = var_269_arg_0 != 0; [L393] SORT_15 var_230_arg_0 = input_16; [L394] SORT_15 var_230_arg_1 = var_229; [L395] SORT_1 var_230 = var_230_arg_0 == var_230_arg_1; [L396] SORT_15 var_227_arg_0 = input_16; [L397] SORT_15 var_227_arg_1 = var_226; [L398] SORT_1 var_227 = var_227_arg_0 == var_227_arg_1; [L399] SORT_1 var_231_arg_0 = var_230; [L400] SORT_1 var_231_arg_1 = var_227; [L401] SORT_1 var_231 = var_231_arg_0 | var_231_arg_1; [L402] var_231 = var_231 & mask_SORT_1 [L403] SORT_15 var_224_arg_0 = input_16; [L404] SORT_15 var_224_arg_1 = var_125; [L405] SORT_1 var_224 = var_224_arg_0 == var_224_arg_1; [L406] SORT_15 var_233_arg_0 = input_16; [L407] SORT_15 var_233_arg_1 = var_127; [L408] SORT_1 var_233 = var_233_arg_0 == var_233_arg_1; [L409] SORT_1 var_234_arg_0 = var_224; [L410] SORT_1 var_234_arg_1 = var_233; [L411] SORT_6 var_234 = ((SORT_6)var_234_arg_0 << 1) | var_234_arg_1; [L412] var_234 = var_234 & mask_SORT_6 [L413] SORT_1 var_235_arg_0 = var_231; [L414] SORT_6 var_235_arg_1 = var_234; [L415] SORT_8 var_235 = ((SORT_8)var_235_arg_0 << 2) | var_235_arg_1; [L416] var_235 = var_235 & mask_SORT_8 [L417] SORT_8 var_236_arg_0 = var_235; [L418] SORT_1 var_236 = var_236_arg_0 != 0; [L419] SORT_15 var_221_arg_0 = input_16; [L420] SORT_15 var_221_arg_1 = var_131; [L421] SORT_1 var_221 = var_221_arg_0 == var_221_arg_1; [L422] SORT_15 var_219_arg_0 = input_16; [L423] SORT_15 var_219_arg_1 = var_129; [L424] SORT_1 var_219 = var_219_arg_0 == var_219_arg_1; [L425] SORT_1 var_222_arg_0 = var_221; [L426] SORT_1 var_222_arg_1 = var_219; [L427] SORT_1 var_222 = var_222_arg_0 | var_222_arg_1; [L428] var_222 = var_222 & mask_SORT_1 [L429] SORT_15 var_217_arg_0 = input_16; [L430] SORT_15 var_217_arg_1 = var_133; [L431] SORT_1 var_217 = var_217_arg_0 == var_217_arg_1; [L432] SORT_15 var_271_arg_0 = input_16; [L433] SORT_15 var_271_arg_1 = var_135; [L434] SORT_1 var_271 = var_271_arg_0 == var_271_arg_1; [L435] SORT_1 var_272_arg_0 = var_217; [L436] SORT_1 var_272_arg_1 = var_271; [L437] SORT_6 var_272 = ((SORT_6)var_272_arg_0 << 1) | var_272_arg_1; [L438] var_272 = var_272 & mask_SORT_6 [L439] SORT_1 var_273_arg_0 = var_222; [L440] SORT_6 var_273_arg_1 = var_272; [L441] SORT_8 var_273 = ((SORT_8)var_273_arg_0 << 2) | var_273_arg_1; [L442] var_273 = var_273 & mask_SORT_8 [L443] SORT_1 var_274_arg_0 = var_236; [L444] SORT_8 var_274_arg_1 = var_273; [L445] SORT_113 var_274 = ((SORT_113)var_274_arg_0 << 3) | var_274_arg_1; [L446] var_274 = var_274 & mask_SORT_113 [L447] SORT_1 var_275_arg_0 = var_269; [L448] SORT_113 var_275_arg_1 = var_274; [L449] SORT_15 var_275 = ((SORT_15)var_275_arg_0 << 4) | var_275_arg_1; [L450] var_275 = var_275 & mask_SORT_15 [L451] SORT_15 var_276_arg_0 = var_275; [L452] SORT_1 var_276 = var_276_arg_0 != 0; [L453] SORT_1 var_253_arg_0 = var_252; [L454] SORT_1 var_253_arg_1 = var_56; [L455] SORT_1 var_253_arg_2 = var_56; [L456] EXPR var_253_arg_0 ? var_253_arg_1 : var_253_arg_2 [L456] SORT_1 var_253 = var_253_arg_0 ? var_253_arg_1 : var_253_arg_2; [L457] SORT_1 var_250_arg_0 = var_249; [L458] SORT_1 var_250_arg_1 = var_56; [L459] SORT_1 var_250_arg_2 = var_56; [L460] EXPR var_250_arg_0 ? var_250_arg_1 : var_250_arg_2 [L460] SORT_1 var_250 = var_250_arg_0 ? var_250_arg_1 : var_250_arg_2; [L461] SORT_1 var_257_arg_0 = var_256; [L462] SORT_1 var_257_arg_1 = var_253; [L463] SORT_1 var_257_arg_2 = var_250; [L464] EXPR var_257_arg_0 ? var_257_arg_1 : var_257_arg_2 [L464] SORT_1 var_257 = var_257_arg_0 ? var_257_arg_1 : var_257_arg_2; [L465] SORT_1 var_243_arg_0 = var_242; [L466] SORT_1 var_243_arg_1 = var_56; [L467] SORT_1 var_243_arg_2 = var_56; [L468] EXPR var_243_arg_0 ? var_243_arg_1 : var_243_arg_2 [L468] SORT_1 var_243 = var_243_arg_0 ? var_243_arg_1 : var_243_arg_2; [L469] SORT_1 var_240_arg_0 = var_239; [L470] SORT_1 var_240_arg_1 = var_56; [L471] SORT_1 var_240_arg_2 = var_56; [L472] EXPR var_240_arg_0 ? var_240_arg_1 : var_240_arg_2 [L472] SORT_1 var_240 = var_240_arg_0 ? var_240_arg_1 : var_240_arg_2; [L473] SORT_1 var_247_arg_0 = var_246; [L474] SORT_1 var_247_arg_1 = var_243; [L475] SORT_1 var_247_arg_2 = var_240; [L476] EXPR var_247_arg_0 ? var_247_arg_1 : var_247_arg_2 [L476] SORT_1 var_247 = var_247_arg_0 ? var_247_arg_1 : var_247_arg_2; [L477] SORT_1 var_263_arg_0 = var_262; [L478] SORT_1 var_263_arg_1 = var_257; [L479] SORT_1 var_263_arg_2 = var_247; [L480] EXPR var_263_arg_0 ? var_263_arg_1 : var_263_arg_2 [L480] SORT_1 var_263 = var_263_arg_0 ? var_263_arg_1 : var_263_arg_2; [L481] SORT_1 var_228_arg_0 = var_227; [L482] SORT_1 var_228_arg_1 = var_56; [L483] SORT_1 var_228_arg_2 = var_56; [L484] EXPR var_228_arg_0 ? var_228_arg_1 : var_228_arg_2 [L484] SORT_1 var_228 = var_228_arg_0 ? var_228_arg_1 : var_228_arg_2; [L485] SORT_1 var_225_arg_0 = var_224; [L486] SORT_1 var_225_arg_1 = var_28; [L487] SORT_1 var_225_arg_2 = var_28; [L488] EXPR var_225_arg_0 ? var_225_arg_1 : var_225_arg_2 [L488] SORT_1 var_225 = var_225_arg_0 ? var_225_arg_1 : var_225_arg_2; [L489] SORT_1 var_232_arg_0 = var_231; [L490] SORT_1 var_232_arg_1 = var_228; [L491] SORT_1 var_232_arg_2 = var_225; [L492] EXPR var_232_arg_0 ? var_232_arg_1 : var_232_arg_2 [L492] SORT_1 var_232 = var_232_arg_0 ? var_232_arg_1 : var_232_arg_2; [L493] SORT_1 var_220_arg_0 = var_219; [L494] SORT_1 var_220_arg_1 = var_28; [L495] SORT_1 var_220_arg_2 = var_28; [L496] EXPR var_220_arg_0 ? var_220_arg_1 : var_220_arg_2 [L496] SORT_1 var_220 = var_220_arg_0 ? var_220_arg_1 : var_220_arg_2; [L497] SORT_1 var_218_arg_0 = var_217; [L498] SORT_1 var_218_arg_1 = var_28; [L499] SORT_1 var_218_arg_2 = var_28; [L500] EXPR var_218_arg_0 ? var_218_arg_1 : var_218_arg_2 [L500] SORT_1 var_218 = var_218_arg_0 ? var_218_arg_1 : var_218_arg_2; [L501] SORT_1 var_223_arg_0 = var_222; [L502] SORT_1 var_223_arg_1 = var_220; [L503] SORT_1 var_223_arg_2 = var_218; [L504] EXPR var_223_arg_0 ? var_223_arg_1 : var_223_arg_2 [L504] SORT_1 var_223 = var_223_arg_0 ? var_223_arg_1 : var_223_arg_2; [L505] SORT_1 var_237_arg_0 = var_236; [L506] SORT_1 var_237_arg_1 = var_232; [L507] SORT_1 var_237_arg_2 = var_223; [L508] EXPR var_237_arg_0 ? var_237_arg_1 : var_237_arg_2 [L508] SORT_1 var_237 = var_237_arg_0 ? var_237_arg_1 : var_237_arg_2; [L509] SORT_1 var_270_arg_0 = var_269; [L510] SORT_1 var_270_arg_1 = var_263; [L511] SORT_1 var_270_arg_2 = var_237; [L512] EXPR var_270_arg_0 ? var_270_arg_1 : var_270_arg_2 [L512] SORT_1 var_270 = var_270_arg_0 ? var_270_arg_1 : var_270_arg_2; [L513] SORT_15 var_202_arg_0 = input_16; [L514] SORT_15 var_202_arg_1 = var_139; [L515] SORT_1 var_202 = var_202_arg_0 == var_202_arg_1; [L516] SORT_15 var_200_arg_0 = input_16; [L517] SORT_15 var_200_arg_1 = var_137; [L518] SORT_1 var_200 = var_200_arg_0 == var_200_arg_1; [L519] SORT_1 var_203_arg_0 = var_202; [L520] SORT_1 var_203_arg_1 = var_200; [L521] SORT_1 var_203 = var_203_arg_0 | var_203_arg_1; [L522] var_203 = var_203 & mask_SORT_1 [L523] SORT_15 var_198_arg_0 = input_16; [L524] SORT_15 var_198_arg_1 = var_197; [L525] SORT_1 var_198 = var_198_arg_0 == var_198_arg_1; [L526] SORT_15 var_206_arg_0 = input_16; [L527] SORT_15 var_206_arg_1 = var_205; [L528] SORT_1 var_206 = var_206_arg_0 == var_206_arg_1; [L529] SORT_1 var_207_arg_0 = var_198; [L530] SORT_1 var_207_arg_1 = var_206; [L531] SORT_6 var_207 = ((SORT_6)var_207_arg_0 << 1) | var_207_arg_1; [L532] var_207 = var_207 & mask_SORT_6 [L533] SORT_1 var_208_arg_0 = var_203; [L534] SORT_6 var_208_arg_1 = var_207; [L535] SORT_8 var_208 = ((SORT_8)var_208_arg_0 << 2) | var_208_arg_1; [L536] var_208 = var_208 & mask_SORT_8 [L537] SORT_8 var_209_arg_0 = var_208; [L538] SORT_1 var_209 = var_209_arg_0 != 0; [L539] SORT_15 var_194_arg_0 = input_16; [L540] SORT_15 var_194_arg_1 = var_105; [L541] SORT_1 var_194 = var_194_arg_0 == var_194_arg_1; [L542] SORT_15 var_192_arg_0 = input_16; [L543] SORT_15 var_192_arg_1 = var_103; [L544] SORT_1 var_192 = var_192_arg_0 == var_192_arg_1; [L545] SORT_1 var_195_arg_0 = var_194; [L546] SORT_1 var_195_arg_1 = var_192; [L547] SORT_1 var_195 = var_195_arg_0 | var_195_arg_1; [L548] var_195 = var_195 & mask_SORT_1 [L549] SORT_15 var_190_arg_0 = input_16; [L550] SORT_15 var_190_arg_1 = var_109; [L551] SORT_1 var_190 = var_190_arg_0 == var_190_arg_1; [L552] SORT_15 var_211_arg_0 = input_16; [L553] SORT_15 var_211_arg_1 = var_141; [L554] SORT_1 var_211 = var_211_arg_0 == var_211_arg_1; [L555] SORT_1 var_212_arg_0 = var_190; [L556] SORT_1 var_212_arg_1 = var_211; [L557] SORT_6 var_212 = ((SORT_6)var_212_arg_0 << 1) | var_212_arg_1; [L558] var_212 = var_212 & mask_SORT_6 [L559] SORT_1 var_213_arg_0 = var_195; [L560] SORT_6 var_213_arg_1 = var_212; [L561] SORT_8 var_213 = ((SORT_8)var_213_arg_0 << 2) | var_213_arg_1; [L562] var_213 = var_213 & mask_SORT_8 [L563] SORT_1 var_214_arg_0 = var_209; [L564] SORT_8 var_214_arg_1 = var_213; [L565] SORT_113 var_214 = ((SORT_113)var_214_arg_0 << 3) | var_214_arg_1; [L566] var_214 = var_214 & mask_SORT_113 [L567] SORT_113 var_215_arg_0 = var_214; [L568] SORT_1 var_215 = var_215_arg_0 != 0; [L569] SORT_1 var_201_arg_0 = var_200; [L570] SORT_1 var_201_arg_1 = var_28; [L571] SORT_1 var_201_arg_2 = var_28; [L572] EXPR var_201_arg_0 ? var_201_arg_1 : var_201_arg_2 [L572] SORT_1 var_201 = var_201_arg_0 ? var_201_arg_1 : var_201_arg_2; [L573] SORT_1 var_199_arg_0 = var_198; [L574] SORT_1 var_199_arg_1 = var_56; [L575] SORT_1 var_199_arg_2 = var_56; [L576] EXPR var_199_arg_0 ? var_199_arg_1 : var_199_arg_2 [L576] SORT_1 var_199 = var_199_arg_0 ? var_199_arg_1 : var_199_arg_2; [L577] SORT_1 var_204_arg_0 = var_203; [L578] SORT_1 var_204_arg_1 = var_201; [L579] SORT_1 var_204_arg_2 = var_199; [L580] EXPR var_204_arg_0 ? var_204_arg_1 : var_204_arg_2 [L580] SORT_1 var_204 = var_204_arg_0 ? var_204_arg_1 : var_204_arg_2; [L581] SORT_1 var_193_arg_0 = var_192; [L582] SORT_1 var_193_arg_1 = var_28; [L583] SORT_1 var_193_arg_2 = var_28; [L584] EXPR var_193_arg_0 ? var_193_arg_1 : var_193_arg_2 [L584] SORT_1 var_193 = var_193_arg_0 ? var_193_arg_1 : var_193_arg_2; [L585] SORT_1 var_191_arg_0 = var_190; [L586] SORT_1 var_191_arg_1 = var_28; [L587] SORT_1 var_191_arg_2 = var_28; [L588] EXPR var_191_arg_0 ? var_191_arg_1 : var_191_arg_2 [L588] SORT_1 var_191 = var_191_arg_0 ? var_191_arg_1 : var_191_arg_2; [L589] SORT_1 var_196_arg_0 = var_195; [L590] SORT_1 var_196_arg_1 = var_193; [L591] SORT_1 var_196_arg_2 = var_191; [L592] EXPR var_196_arg_0 ? var_196_arg_1 : var_196_arg_2 [L592] SORT_1 var_196 = var_196_arg_0 ? var_196_arg_1 : var_196_arg_2; [L593] SORT_1 var_210_arg_0 = var_209; [L594] SORT_1 var_210_arg_1 = var_204; [L595] SORT_1 var_210_arg_2 = var_196; [L596] EXPR var_210_arg_0 ? var_210_arg_1 : var_210_arg_2 [L596] SORT_1 var_210 = var_210_arg_0 ? var_210_arg_1 : var_210_arg_2; [L597] SORT_15 var_182_arg_0 = input_16; [L598] SORT_15 var_182_arg_1 = var_143; [L599] SORT_1 var_182 = var_182_arg_0 == var_182_arg_1; [L600] SORT_15 var_180_arg_0 = input_16; [L601] SORT_15 var_180_arg_1 = var_179; [L602] SORT_1 var_180 = var_180_arg_0 == var_180_arg_1; [L603] SORT_1 var_183_arg_0 = var_182; [L604] SORT_1 var_183_arg_1 = var_180; [L605] SORT_1 var_183 = var_183_arg_0 | var_183_arg_1; [L606] var_183 = var_183 & mask_SORT_1 [L607] SORT_15 var_177_arg_0 = input_16; [L608] SORT_15 var_177_arg_1 = var_147; [L609] SORT_1 var_177 = var_177_arg_0 == var_177_arg_1; [L610] SORT_15 var_185_arg_0 = input_16; [L611] SORT_15 var_185_arg_1 = var_167; [L612] SORT_1 var_185 = var_185_arg_0 == var_185_arg_1; [L613] SORT_1 var_186_arg_0 = var_177; [L614] SORT_1 var_186_arg_1 = var_185; [L615] SORT_6 var_186 = ((SORT_6)var_186_arg_0 << 1) | var_186_arg_1; [L616] var_186 = var_186 & mask_SORT_6 [L617] SORT_1 var_187_arg_0 = var_183; [L618] SORT_6 var_187_arg_1 = var_186; [L619] SORT_8 var_187 = ((SORT_8)var_187_arg_0 << 2) | var_187_arg_1; [L620] var_187 = var_187 & mask_SORT_8 [L621] SORT_8 var_188_arg_0 = var_187; [L622] SORT_1 var_188 = var_188_arg_0 != 0; [L623] SORT_1 var_181_arg_0 = var_180; [L624] SORT_1 var_181_arg_1 = var_56; [L625] SORT_1 var_181_arg_2 = var_28; [L626] EXPR var_181_arg_0 ? var_181_arg_1 : var_181_arg_2 [L626] SORT_1 var_181 = var_181_arg_0 ? var_181_arg_1 : var_181_arg_2; [L627] SORT_1 var_178_arg_0 = var_177; [L628] SORT_1 var_178_arg_1 = var_28; [L629] SORT_1 var_178_arg_2 = var_28; [L630] EXPR var_178_arg_0 ? var_178_arg_1 : var_178_arg_2 [L630] SORT_1 var_178 = var_178_arg_0 ? var_178_arg_1 : var_178_arg_2; [L631] SORT_1 var_184_arg_0 = var_183; [L632] SORT_1 var_184_arg_1 = var_181; [L633] SORT_1 var_184_arg_2 = var_178; [L634] EXPR var_184_arg_0 ? var_184_arg_1 : var_184_arg_2 [L634] SORT_1 var_184 = var_184_arg_0 ? var_184_arg_1 : var_184_arg_2; [L635] SORT_15 var_174_arg_0 = input_16; [L636] SORT_15 var_174_arg_1 = var_107; [L637] SORT_1 var_174 = var_174_arg_0 == var_174_arg_1; [L638] SORT_15 var_172_arg_0 = input_16; [L639] SORT_15 var_172_arg_1 = var_145; [L640] SORT_1 var_172 = var_172_arg_0 == var_172_arg_1; [L641] SORT_1 var_175_arg_0 = var_174; [L642] SORT_1 var_175_arg_1 = var_172; [L643] SORT_1 var_175 = var_175_arg_0 | var_175_arg_1; [L644] var_175 = var_175 & mask_SORT_1 [L645] SORT_1 var_173_arg_0 = var_172; [L646] SORT_1 var_173_arg_1 = var_28; [L647] SORT_1 var_173_arg_2 = var_28; [L648] EXPR var_173_arg_0 ? var_173_arg_1 : var_173_arg_2 [L648] SORT_1 var_173 = var_173_arg_0 ? var_173_arg_1 : var_173_arg_2; [L649] SORT_15 var_170_arg_0 = input_16; [L650] SORT_15 var_170_arg_1 = var_169; [L651] SORT_1 var_170 = var_170_arg_0 == var_170_arg_1; [L652] SORT_1 var_171_arg_0 = var_170; [L653] SORT_1 var_171_arg_1 = var_56; [L654] SORT_1 var_171_arg_2 = var_56; [L655] EXPR var_171_arg_0 ? var_171_arg_1 : var_171_arg_2 [L655] SORT_1 var_171 = var_171_arg_0 ? var_171_arg_1 : var_171_arg_2; [L656] SORT_1 var_176_arg_0 = var_175; [L657] SORT_1 var_176_arg_1 = var_173; [L658] SORT_1 var_176_arg_2 = var_171; [L659] EXPR var_176_arg_0 ? var_176_arg_1 : var_176_arg_2 [L659] SORT_1 var_176 = var_176_arg_0 ? var_176_arg_1 : var_176_arg_2; [L660] SORT_1 var_189_arg_0 = var_188; [L661] SORT_1 var_189_arg_1 = var_184; [L662] SORT_1 var_189_arg_2 = var_176; [L663] EXPR var_189_arg_0 ? var_189_arg_1 : var_189_arg_2 [L663] SORT_1 var_189 = var_189_arg_0 ? var_189_arg_1 : var_189_arg_2; [L664] SORT_1 var_216_arg_0 = var_215; [L665] SORT_1 var_216_arg_1 = var_210; [L666] SORT_1 var_216_arg_2 = var_189; [L667] EXPR var_216_arg_0 ? var_216_arg_1 : var_216_arg_2 [L667] SORT_1 var_216 = var_216_arg_0 ? var_216_arg_1 : var_216_arg_2; [L668] SORT_1 var_277_arg_0 = var_276; [L669] SORT_1 var_277_arg_1 = var_270; [L670] SORT_1 var_277_arg_2 = var_216; [L671] EXPR var_277_arg_0 ? var_277_arg_1 : var_277_arg_2 [L671] SORT_1 var_277 = var_277_arg_0 ? var_277_arg_1 : var_277_arg_2; [L672] SORT_15 var_168_arg_0 = input_16; [L673] SORT_15 var_168_arg_1 = var_167; [L674] SORT_1 var_168 = var_168_arg_0 == var_168_arg_1; [L675] SORT_15 var_148_arg_0 = input_16; [L676] SORT_15 var_148_arg_1 = var_147; [L677] SORT_1 var_148 = var_148_arg_0 == var_148_arg_1; [L678] SORT_15 var_146_arg_0 = input_16; [L679] SORT_15 var_146_arg_1 = var_145; [L680] SORT_1 var_146 = var_146_arg_0 == var_146_arg_1; [L681] SORT_15 var_144_arg_0 = input_16; [L682] SORT_15 var_144_arg_1 = var_143; [L683] SORT_1 var_144 = var_144_arg_0 == var_144_arg_1; [L684] SORT_15 var_142_arg_0 = input_16; [L685] SORT_15 var_142_arg_1 = var_141; [L686] SORT_1 var_142 = var_142_arg_0 == var_142_arg_1; [L687] SORT_15 var_140_arg_0 = input_16; [L688] SORT_15 var_140_arg_1 = var_139; [L689] SORT_1 var_140 = var_140_arg_0 == var_140_arg_1; [L690] SORT_15 var_138_arg_0 = input_16; [L691] SORT_15 var_138_arg_1 = var_137; [L692] SORT_1 var_138 = var_138_arg_0 == var_138_arg_1; [L693] SORT_15 var_136_arg_0 = input_16; [L694] SORT_15 var_136_arg_1 = var_135; [L695] SORT_1 var_136 = var_136_arg_0 == var_136_arg_1; [L696] SORT_15 var_134_arg_0 = input_16; [L697] SORT_15 var_134_arg_1 = var_133; [L698] SORT_1 var_134 = var_134_arg_0 == var_134_arg_1; [L699] SORT_15 var_132_arg_0 = input_16; [L700] SORT_15 var_132_arg_1 = var_131; [L701] SORT_1 var_132 = var_132_arg_0 == var_132_arg_1; [L702] SORT_15 var_130_arg_0 = input_16; [L703] SORT_15 var_130_arg_1 = var_129; [L704] SORT_1 var_130 = var_130_arg_0 == var_130_arg_1; [L705] SORT_15 var_128_arg_0 = input_16; [L706] SORT_15 var_128_arg_1 = var_127; [L707] SORT_1 var_128 = var_128_arg_0 == var_128_arg_1; [L708] SORT_15 var_126_arg_0 = input_16; [L709] SORT_15 var_126_arg_1 = var_125; [L710] SORT_1 var_126 = var_126_arg_0 == var_126_arg_1; [L711] SORT_1 var_149_arg_0 = var_128; [L712] SORT_1 var_149_arg_1 = var_126; [L713] SORT_6 var_149 = ((SORT_6)var_149_arg_0 << 1) | var_149_arg_1; [L714] var_149 = var_149 & mask_SORT_6 [L715] SORT_1 var_150_arg_0 = var_130; [L716] SORT_6 var_150_arg_1 = var_149; [L717] SORT_8 var_150 = ((SORT_8)var_150_arg_0 << 2) | var_150_arg_1; [L718] var_150 = var_150 & mask_SORT_8 [L719] SORT_1 var_151_arg_0 = var_132; [L720] SORT_8 var_151_arg_1 = var_150; [L721] SORT_113 var_151 = ((SORT_113)var_151_arg_0 << 3) | var_151_arg_1; [L722] var_151 = var_151 & mask_SORT_113 [L723] SORT_1 var_152_arg_0 = var_134; [L724] SORT_113 var_152_arg_1 = var_151; [L725] SORT_15 var_152 = ((SORT_15)var_152_arg_0 << 4) | var_152_arg_1; [L726] var_152 = var_152 & mask_SORT_15 [L727] SORT_1 var_154_arg_0 = var_136; [L728] SORT_15 var_154_arg_1 = var_152; [L729] SORT_153 var_154 = ((SORT_153)var_154_arg_0 << 5) | var_154_arg_1; [L730] var_154 = var_154 & mask_SORT_153 [L731] SORT_1 var_156_arg_0 = var_138; [L732] SORT_153 var_156_arg_1 = var_154; [L733] SORT_155 var_156 = ((SORT_155)var_156_arg_0 << 6) | var_156_arg_1; [L734] var_156 = var_156 & mask_SORT_155 [L735] SORT_1 var_157_arg_0 = var_140; [L736] SORT_155 var_157_arg_1 = var_156; [L737] SORT_18 var_157 = ((SORT_18)var_157_arg_0 << 7) | var_157_arg_1; [L738] var_157 = var_157 & mask_SORT_18 [L739] SORT_1 var_159_arg_0 = var_142; [L740] SORT_18 var_159_arg_1 = var_157; [L741] SORT_158 var_159 = ((SORT_158)var_159_arg_0 << 8) | var_159_arg_1; [L742] var_159 = var_159 & mask_SORT_158 [L743] SORT_1 var_161_arg_0 = var_144; [L744] SORT_158 var_161_arg_1 = var_159; [L745] SORT_160 var_161 = ((SORT_160)var_161_arg_0 << 9) | var_161_arg_1; [L746] var_161 = var_161 & mask_SORT_160 [L747] SORT_1 var_163_arg_0 = var_146; [L748] SORT_160 var_163_arg_1 = var_161; [L749] SORT_162 var_163 = ((SORT_162)var_163_arg_0 << 10) | var_163_arg_1; [L750] var_163 = var_163 & mask_SORT_162 [L751] SORT_1 var_165_arg_0 = var_148; [L752] SORT_162 var_165_arg_1 = var_163; [L753] SORT_164 var_165 = ((SORT_164)var_165_arg_0 << 11) | var_165_arg_1; [L754] var_165 = var_165 & mask_SORT_164 [L755] SORT_164 var_166_arg_0 = var_165; [L756] SORT_1 var_166 = var_166_arg_0 != 0; [L757] SORT_1 var_278_arg_0 = var_168; [L758] SORT_1 var_278_arg_1 = var_166; [L759] SORT_6 var_278 = ((SORT_6)var_278_arg_0 << 1) | var_278_arg_1; [L760] var_278 = var_278 & mask_SORT_6 [L761] SORT_1 var_279_arg_0 = var_277; [L762] SORT_6 var_279_arg_1 = var_278; [L763] SORT_8 var_279 = ((SORT_8)var_279_arg_0 << 2) | var_279_arg_1; [L764] var_279 = var_279 & mask_SORT_8 [L765] SORT_8 var_280_arg_0 = var_279; [L766] SORT_1 var_280 = var_280_arg_0 != 0; [L767] SORT_1 var_94_arg_0 = var_93; [L768] SORT_1 var_94 = ~var_94_arg_0; [L769] var_94 = var_94 & mask_SORT_1 [L770] SORT_1 var_95_arg_0 = input_13; [L771] SORT_1 var_95_arg_1 = var_94; [L772] SORT_6 var_95 = ((SORT_6)var_95_arg_0 << 1) | var_95_arg_1; [L773] var_95 = var_95 & mask_SORT_6 [L774] SORT_6 var_96_arg_0 = var_95; [L775] SORT_1 var_96 = var_96_arg_0 == mask_SORT_6; [L776] SORT_1 var_281_arg_0 = var_280; [L777] SORT_1 var_281_arg_1 = var_96; [L778] SORT_6 var_281 = ((SORT_6)var_281_arg_0 << 1) | var_281_arg_1; [L779] var_281 = var_281 & mask_SORT_6 [L780] SORT_1 var_282_arg_0 = var_90; [L781] SORT_6 var_282_arg_1 = var_281; [L782] SORT_8 var_282 = ((SORT_8)var_282_arg_0 << 2) | var_282_arg_1; [L783] var_282 = var_282 & mask_SORT_8 [L784] SORT_8 var_283_arg_0 = var_282; [L785] SORT_1 var_283 = var_283_arg_0 == mask_SORT_8; [L786] SORT_1 var_122_arg_0 = input_13; [L787] SORT_1 var_122 = ~var_122_arg_0; [L788] SORT_1 var_120_arg_0 = input_13; [L789] SORT_1 var_120_arg_1 = var_93; [L790] SORT_6 var_120 = ((SORT_6)var_120_arg_0 << 1) | var_120_arg_1; [L791] var_120 = var_120 & mask_SORT_6 [L792] SORT_6 var_121_arg_0 = var_120; [L793] SORT_1 var_121 = var_121_arg_0 == mask_SORT_6; [L794] SORT_1 var_123_arg_0 = var_122; [L795] SORT_1 var_123_arg_1 = var_121; [L796] SORT_6 var_123 = ((SORT_6)var_123_arg_0 << 1) | var_123_arg_1; [L797] var_123 = var_123 & mask_SORT_6 [L798] SORT_6 var_124_arg_0 = var_123; [L799] SORT_1 var_124 = var_124_arg_0 != 0; [L800] SORT_1 var_284_arg_0 = var_283; [L801] SORT_1 var_284_arg_1 = var_124; [L802] SORT_6 var_284 = ((SORT_6)var_284_arg_0 << 1) | var_284_arg_1; [L803] var_284 = var_284 & mask_SORT_6 [L804] SORT_6 var_285_arg_0 = var_284; [L805] SORT_1 var_285 = var_285_arg_0 != 0; [L806] SORT_15 var_110_arg_0 = input_16; [L807] SORT_15 var_110_arg_1 = var_109; [L808] SORT_1 var_110 = var_110_arg_0 == var_110_arg_1; [L809] SORT_15 var_108_arg_0 = input_16; [L810] SORT_15 var_108_arg_1 = var_107; [L811] SORT_1 var_108 = var_108_arg_0 == var_108_arg_1; [L812] SORT_15 var_106_arg_0 = input_16; [L813] SORT_15 var_106_arg_1 = var_105; [L814] SORT_1 var_106 = var_106_arg_0 == var_106_arg_1; [L815] SORT_15 var_104_arg_0 = input_16; [L816] SORT_15 var_104_arg_1 = var_103; [L817] SORT_1 var_104 = var_104_arg_0 == var_104_arg_1; [L818] SORT_1 var_111_arg_0 = var_106; [L819] SORT_1 var_111_arg_1 = var_104; [L820] SORT_6 var_111 = ((SORT_6)var_111_arg_0 << 1) | var_111_arg_1; [L821] var_111 = var_111 & mask_SORT_6 [L822] SORT_1 var_112_arg_0 = var_108; [L823] SORT_6 var_112_arg_1 = var_111; [L824] SORT_8 var_112 = ((SORT_8)var_112_arg_0 << 2) | var_112_arg_1; [L825] var_112 = var_112 & mask_SORT_8 [L826] SORT_1 var_114_arg_0 = var_110; [L827] SORT_8 var_114_arg_1 = var_112; [L828] SORT_113 var_114 = ((SORT_113)var_114_arg_0 << 3) | var_114_arg_1; [L829] var_114 = var_114 & mask_SORT_113 [L830] SORT_113 var_115_arg_0 = var_114; [L831] SORT_1 var_115 = var_115_arg_0 != 0; [L832] SORT_1 var_116_arg_0 = var_115; [L833] SORT_1 var_116_arg_1 = var_96; [L834] SORT_6 var_116 = ((SORT_6)var_116_arg_0 << 1) | var_116_arg_1; [L835] var_116 = var_116 & mask_SORT_6 [L836] SORT_1 var_117_arg_0 = var_90; [L837] SORT_6 var_117_arg_1 = var_116; [L838] SORT_8 var_117 = ((SORT_8)var_117_arg_0 << 2) | var_117_arg_1; [L839] var_117 = var_117 & mask_SORT_8 [L840] SORT_8 var_118_arg_0 = var_117; [L841] SORT_1 var_118 = var_118_arg_0 == mask_SORT_8; [L842] SORT_1 var_84_arg_0 = var_83; [L843] SORT_1 var_84 = ~var_84_arg_0; [L844] SORT_1 var_100_arg_0 = var_84; [L845] SORT_1 var_100_arg_1 = var_81; [L846] SORT_6 var_100 = ((SORT_6)var_100_arg_0 << 1) | var_100_arg_1; [L847] var_100 = var_100 & mask_SORT_6 [L848] SORT_6 var_101_arg_0 = var_100; [L849] SORT_1 var_101 = var_101_arg_0 == mask_SORT_6; [L850] SORT_1 var_102_arg_0 = var_101; [L851] SORT_1 var_102_arg_1 = var_83; [L852] SORT_6 var_102 = ((SORT_6)var_102_arg_0 << 1) | var_102_arg_1; [L853] SORT_1 var_91_arg_0 = var_90; [L854] SORT_1 var_91 = ~var_91_arg_0; [L855] var_91 = var_91 & mask_SORT_1 [L856] SORT_1 var_97_arg_0 = var_96; [L857] SORT_1 var_97_arg_1 = var_91; [L858] SORT_6 var_97 = ((SORT_6)var_97_arg_0 << 1) | var_97_arg_1; [L859] var_97 = var_97 & mask_SORT_6 [L860] SORT_6 var_98_arg_0 = var_97; [L861] SORT_1 var_98 = var_98_arg_0 == mask_SORT_6; [L862] SORT_1 var_85_arg_0 = var_81; [L863] SORT_1 var_85_arg_1 = var_79; [L864] SORT_6 var_85 = ((SORT_6)var_85_arg_0 << 1) | var_85_arg_1; [L865] var_85 = var_85 & mask_SORT_6 [L866] SORT_1 var_86_arg_0 = var_84; [L867] SORT_6 var_86_arg_1 = var_85; [L868] SORT_8 var_86 = ((SORT_8)var_86_arg_0 << 2) | var_86_arg_1; [L869] var_86 = var_86 & mask_SORT_8 [L870] SORT_8 var_87_arg_0 = var_86; [L871] SORT_1 var_87 = var_87_arg_0 == mask_SORT_8; [L872] SORT_1 var_88_arg_0 = var_87; [L873] SORT_1 var_88_arg_1 = var_28; [L874] SORT_6 var_88 = ((SORT_6)var_88_arg_0 << 1) | var_88_arg_1; [L875] SORT_1 var_99_arg_0 = var_98; [L876] SORT_6 var_99_arg_1 = var_88; [L877] SORT_6 var_99_arg_2 = var_48; [L878] EXPR var_99_arg_0 ? var_99_arg_1 : var_99_arg_2 [L878] SORT_6 var_99 = var_99_arg_0 ? var_99_arg_1 : var_99_arg_2; [L879] SORT_1 var_119_arg_0 = var_118; [L880] SORT_6 var_119_arg_1 = var_102; [L881] SORT_6 var_119_arg_2 = var_99; [L882] EXPR var_119_arg_0 ? var_119_arg_1 : var_119_arg_2 [L882] SORT_6 var_119 = var_119_arg_0 ? var_119_arg_1 : var_119_arg_2; [L883] SORT_1 var_286_arg_0 = var_285; [L884] SORT_6 var_286_arg_1 = var_48; [L885] SORT_6 var_286_arg_2 = var_119; [L886] EXPR var_286_arg_0 ? var_286_arg_1 : var_286_arg_2 [L886] SORT_6 var_286 = var_286_arg_0 ? var_286_arg_1 : var_286_arg_2; [L887] var_286 = var_286 & mask_SORT_6 [L888] SORT_153 var_288_arg_0 = var_287; [L889] SORT_6 var_288_arg_1 = var_286; [L890] SORT_18 var_288 = ((SORT_18)var_288_arg_0 << 2) | var_288_arg_1; [L891] SORT_1 var_51_arg_0 = state_45; [L892] SORT_6 var_51_arg_1 = state_49; [L893] SORT_6 var_51_arg_2 = input_20; [L894] EXPR var_51_arg_0 ? var_51_arg_1 : var_51_arg_2 [L894] SORT_6 var_51 = var_51_arg_0 ? var_51_arg_1 : var_51_arg_2; [L895] SORT_6 var_54_arg_0 = var_51; [L896] SORT_1 var_54 = var_54_arg_0 >> 0; [L897] var_54 = var_54 & mask_SORT_1 [L898] SORT_6 var_52_arg_0 = var_51; [L899] SORT_1 var_52 = var_52_arg_0 >> 1; [L900] var_52 = var_52 & mask_SORT_1 [L901] SORT_1 var_47_arg_0 = state_45; [L902] SORT_18 var_47_arg_1 = state_43; [L903] SORT_18 var_47_arg_2 = input_19; [L904] EXPR var_47_arg_0 ? var_47_arg_1 : var_47_arg_2 [L904] SORT_18 var_47 = var_47_arg_0 ? var_47_arg_1 : var_47_arg_2; [L905] SORT_1 var_53_arg_0 = var_52; [L906] SORT_18 var_53_arg_1 = var_47; [L907] SORT_18 var_53_arg_2 = var_42; [L908] EXPR var_53_arg_0 ? var_53_arg_1 : var_53_arg_2 [L908] SORT_18 var_53 = var_53_arg_0 ? var_53_arg_1 : var_53_arg_2; [L909] SORT_1 var_55_arg_0 = var_54; [L910] SORT_18 var_55_arg_1 = var_42; [L911] SORT_18 var_55_arg_2 = var_53; [L912] EXPR var_55_arg_0 ? var_55_arg_1 : var_55_arg_2 [L912] SORT_18 var_55 = var_55_arg_0 ? var_55_arg_1 : var_55_arg_2; [L913] SORT_1 var_304_arg_0 = var_303; [L914] SORT_18 var_304_arg_1 = var_288; [L915] SORT_18 var_304_arg_2 = var_55; [L916] EXPR var_304_arg_0 ? var_304_arg_1 : var_304_arg_2 [L916] SORT_18 var_304 = var_304_arg_0 ? var_304_arg_1 : var_304_arg_2; [L917] var_304 = var_304 & mask_SORT_18 [L918] SORT_18 var_305_arg_0 = var_304; [L919] SORT_18 var_305_arg_1 = var_42; [L920] SORT_1 var_305 = var_305_arg_0 == var_305_arg_1; [L921] SORT_1 var_306_arg_0 = var_305; [L922] SORT_1 var_306 = ~var_306_arg_0; [L923] var_306 = var_306 & mask_SORT_1 [L924] SORT_1 var_36_arg_0 = var_35; [L925] SORT_1 var_36_arg_1 = var_33; [L926] SORT_6 var_36 = ((SORT_6)var_36_arg_0 << 1) | var_36_arg_1; [L927] var_36 = var_36 & mask_SORT_6 [L928] SORT_6 var_37_arg_0 = var_36; [L929] SORT_1 var_37 = var_37_arg_0 != 0; [L930] SORT_1 var_40_arg_0 = var_39; [L931] SORT_1 var_40_arg_1 = var_37; [L932] SORT_6 var_40 = ((SORT_6)var_40_arg_0 << 1) | var_40_arg_1; [L933] var_40 = var_40 & mask_SORT_6 [L934] SORT_6 var_41_arg_0 = var_40; [L935] SORT_1 var_41 = var_41_arg_0 != 0; [L936] SORT_1 var_321_arg_0 = var_292; [L937] SORT_1 var_321_arg_1 = var_293; [L938] SORT_6 var_321 = ((SORT_6)var_321_arg_0 << 1) | var_321_arg_1; [L939] var_321 = var_321 & mask_SORT_6 [L940] SORT_6 var_322_arg_0 = var_321; [L941] SORT_1 var_322 = var_322_arg_0 != 0; [L942] SORT_1 var_340_arg_0 = var_322; [L943] SORT_1 var_340_arg_1 = var_41; [L944] SORT_6 var_340 = ((SORT_6)var_340_arg_0 << 1) | var_340_arg_1; [L945] var_340 = var_340 & mask_SORT_6 [L946] SORT_6 var_341_arg_0 = var_340; [L947] SORT_1 var_341 = var_341_arg_0 != 0; [L948] SORT_1 var_336_arg_0 = input_14; [L949] SORT_1 var_336 = ~var_336_arg_0; [L950] SORT_1 var_331_arg_0 = state_45; [L951] SORT_1 var_331_arg_1 = state_329; [L952] SORT_1 var_331_arg_2 = input_21; [L953] EXPR var_331_arg_0 ? var_331_arg_1 : var_331_arg_2 [L953] SORT_1 var_331 = var_331_arg_0 ? var_331_arg_1 : var_331_arg_2; [L954] SORT_1 var_332_arg_0 = var_52; [L955] SORT_1 var_332_arg_1 = var_331; [L956] SORT_1 var_332_arg_2 = var_28; [L957] EXPR var_332_arg_0 ? var_332_arg_1 : var_332_arg_2 [L957] SORT_1 var_332 = var_332_arg_0 ? var_332_arg_1 : var_332_arg_2; [L958] SORT_1 var_333_arg_0 = var_54; [L959] SORT_1 var_333_arg_1 = var_28; [L960] SORT_1 var_333_arg_2 = var_332; [L961] EXPR var_333_arg_0 ? var_333_arg_1 : var_333_arg_2 [L961] SORT_1 var_333 = var_333_arg_0 ? var_333_arg_1 : var_333_arg_2; [L962] var_333 = var_333 & mask_SORT_1 [L963] SORT_1 var_334_arg_0 = var_303; [L964] SORT_1 var_334_arg_1 = var_333; [L965] SORT_6 var_334 = ((SORT_6)var_334_arg_0 << 1) | var_334_arg_1; [L966] var_334 = var_334 & mask_SORT_6 [L967] SORT_6 var_335_arg_0 = var_334; [L968] SORT_1 var_335 = var_335_arg_0 != 0; [L969] SORT_1 var_337_arg_0 = var_336; [L970] SORT_1 var_337_arg_1 = var_335; [L971] SORT_6 var_337 = ((SORT_6)var_337_arg_0 << 1) | var_337_arg_1; [L972] var_337 = var_337 & mask_SORT_6 [L973] SORT_1 var_338_arg_0 = var_94; [L974] SORT_6 var_338_arg_1 = var_337; [L975] SORT_8 var_338 = ((SORT_8)var_338_arg_0 << 2) | var_338_arg_1; [L976] var_338 = var_338 & mask_SORT_8 [L977] SORT_8 var_339_arg_0 = var_338; [L978] SORT_1 var_339 = var_339_arg_0 == mask_SORT_8; [L979] SORT_1 var_342_arg_0 = var_341; [L980] SORT_1 var_342_arg_1 = var_339; [L981] SORT_6 var_342 = ((SORT_6)var_342_arg_0 << 1) | var_342_arg_1; [L982] var_342 = var_342 & mask_SORT_6 [L983] SORT_1 var_343_arg_0 = var_91; [L984] SORT_6 var_343_arg_1 = var_342; [L985] SORT_8 var_343 = ((SORT_8)var_343_arg_0 << 2) | var_343_arg_1; [L986] var_343 = var_343 & mask_SORT_8 [L987] SORT_8 var_344_arg_0 = var_343; [L988] SORT_1 var_344 = var_344_arg_0 == mask_SORT_8; [L989] SORT_1 var_370_arg_0 = var_41; [L990] SORT_1 var_370_arg_1 = var_344; [L991] SORT_6 var_370 = ((SORT_6)var_370_arg_0 << 1) | var_370_arg_1; [L992] var_370 = var_370 & mask_SORT_6 [L993] SORT_1 var_371_arg_0 = var_306; [L994] SORT_6 var_371_arg_1 = var_370; [L995] SORT_8 var_371 = ((SORT_8)var_371_arg_0 << 2) | var_371_arg_1; [L996] var_371 = var_371 & mask_SORT_8 [L997] SORT_1 var_372_arg_0 = var_39; [L998] SORT_8 var_372_arg_1 = var_371; [L999] SORT_113 var_372 = ((SORT_113)var_372_arg_0 << 3) | var_372_arg_1; [L1000] var_372 = var_372 & mask_SORT_113 [L1001] SORT_113 var_373_arg_0 = var_372; [L1002] SORT_1 var_373 = var_373_arg_0 == mask_SORT_113; [L1003] SORT_8 var_358_arg_0 = input_9; [L1004] SORT_8 var_358_arg_1 = var_70; [L1005] SORT_1 var_358 = var_358_arg_0 == var_358_arg_1; [L1006] SORT_8 var_356_arg_0 = input_9; [L1007] SORT_8 var_356_arg_1 = var_67; [L1008] SORT_1 var_356 = var_356_arg_0 == var_356_arg_1; [L1009] SORT_1 var_359_arg_0 = var_358; [L1010] SORT_1 var_359_arg_1 = var_356; [L1011] SORT_1 var_359 = var_359_arg_0 | var_359_arg_1; [L1012] var_359 = var_359 & mask_SORT_1 [L1013] SORT_8 var_354_arg_0 = input_9; [L1014] SORT_8 var_354_arg_1 = var_64; [L1015] SORT_1 var_354 = var_354_arg_0 == var_354_arg_1; [L1016] SORT_8 var_361_arg_0 = input_9; [L1017] SORT_8 var_361_arg_1 = var_74; [L1018] SORT_1 var_361 = var_361_arg_0 == var_361_arg_1; [L1019] SORT_1 var_362_arg_0 = var_354; [L1020] SORT_1 var_362_arg_1 = var_361; [L1021] SORT_6 var_362 = ((SORT_6)var_362_arg_0 << 1) | var_362_arg_1; [L1022] var_362 = var_362 & mask_SORT_6 [L1023] SORT_1 var_363_arg_0 = var_359; [L1024] SORT_6 var_363_arg_1 = var_362; [L1025] SORT_8 var_363 = ((SORT_8)var_363_arg_0 << 2) | var_363_arg_1; [L1026] var_363 = var_363 & mask_SORT_8 [L1027] SORT_8 var_364_arg_0 = var_363; [L1028] SORT_1 var_364 = var_364_arg_0 != 0; [L1029] SORT_1 var_357_arg_0 = var_356; [L1030] SORT_1 var_357_arg_1 = var_56; [L1031] SORT_1 var_357_arg_2 = var_56; [L1032] EXPR var_357_arg_0 ? var_357_arg_1 : var_357_arg_2 [L1032] SORT_1 var_357 = var_357_arg_0 ? var_357_arg_1 : var_357_arg_2; [L1033] SORT_1 var_355_arg_0 = var_354; [L1034] SORT_1 var_355_arg_1 = var_28; [L1035] SORT_1 var_355_arg_2 = var_28; [L1036] EXPR var_355_arg_0 ? var_355_arg_1 : var_355_arg_2 [L1036] SORT_1 var_355 = var_355_arg_0 ? var_355_arg_1 : var_355_arg_2; [L1037] SORT_1 var_360_arg_0 = var_359; [L1038] SORT_1 var_360_arg_1 = var_357; [L1039] SORT_1 var_360_arg_2 = var_355; [L1040] EXPR var_360_arg_0 ? var_360_arg_1 : var_360_arg_2 [L1040] SORT_1 var_360 = var_360_arg_0 ? var_360_arg_1 : var_360_arg_2; [L1041] SORT_8 var_351_arg_0 = input_9; [L1042] SORT_8 var_351_arg_1 = var_34; [L1043] SORT_1 var_351 = var_351_arg_0 == var_351_arg_1; [L1044] SORT_8 var_349_arg_0 = input_9; [L1045] SORT_8 var_349_arg_1 = var_38; [L1046] SORT_1 var_349 = var_349_arg_0 == var_349_arg_1; [L1047] SORT_1 var_352_arg_0 = var_351; [L1048] SORT_1 var_352_arg_1 = var_349; [L1049] SORT_1 var_352 = var_352_arg_0 | var_352_arg_1; [L1050] var_352 = var_352 & mask_SORT_1 [L1051] SORT_1 var_350_arg_0 = var_349; [L1052] SORT_1 var_350_arg_1 = var_28; [L1053] SORT_1 var_350_arg_2 = var_28; [L1054] EXPR var_350_arg_0 ? var_350_arg_1 : var_350_arg_2 [L1054] SORT_1 var_350 = var_350_arg_0 ? var_350_arg_1 : var_350_arg_2; [L1055] SORT_8 var_347_arg_0 = input_9; [L1056] SORT_8 var_347_arg_1 = var_32; [L1057] SORT_1 var_347 = var_347_arg_0 == var_347_arg_1; [L1058] SORT_1 var_348_arg_0 = var_347; [L1059] SORT_1 var_348_arg_1 = var_28; [L1060] SORT_1 var_348_arg_2 = var_56; [L1061] EXPR var_348_arg_0 ? var_348_arg_1 : var_348_arg_2 [L1061] SORT_1 var_348 = var_348_arg_0 ? var_348_arg_1 : var_348_arg_2; [L1062] SORT_1 var_353_arg_0 = var_352; [L1063] SORT_1 var_353_arg_1 = var_350; [L1064] SORT_1 var_353_arg_2 = var_348; [L1065] EXPR var_353_arg_0 ? var_353_arg_1 : var_353_arg_2 [L1065] SORT_1 var_353 = var_353_arg_0 ? var_353_arg_1 : var_353_arg_2; [L1066] SORT_1 var_365_arg_0 = var_364; [L1067] SORT_1 var_365_arg_1 = var_360; [L1068] SORT_1 var_365_arg_2 = var_353; [L1069] EXPR var_365_arg_0 ? var_365_arg_1 : var_365_arg_2 [L1069] SORT_1 var_365 = var_365_arg_0 ? var_365_arg_1 : var_365_arg_2; [L1070] SORT_1 var_366_arg_0 = var_91; [L1071] SORT_1 var_366_arg_1 = var_339; [L1072] SORT_6 var_366 = ((SORT_6)var_366_arg_0 << 1) | var_366_arg_1; [L1073] var_366 = var_366 & mask_SORT_6 [L1074] SORT_1 var_367_arg_0 = var_306; [L1075] SORT_6 var_367_arg_1 = var_366; [L1076] SORT_8 var_367 = ((SORT_8)var_367_arg_0 << 2) | var_367_arg_1; [L1077] var_367 = var_367 & mask_SORT_8 [L1078] SORT_1 var_368_arg_0 = var_365; [L1079] SORT_8 var_368_arg_1 = var_367; [L1080] SORT_113 var_368 = ((SORT_113)var_368_arg_0 << 3) | var_368_arg_1; [L1081] var_368 = var_368 & mask_SORT_113 [L1082] SORT_113 var_369_arg_0 = var_368; [L1083] SORT_1 var_369 = var_369_arg_0 == mask_SORT_113; [L1084] SORT_1 var_374_arg_0 = var_373; [L1085] SORT_1 var_374_arg_1 = var_369; [L1086] SORT_6 var_374 = ((SORT_6)var_374_arg_0 << 1) | var_374_arg_1; [L1087] var_374 = var_374 & mask_SORT_6 [L1088] SORT_6 var_375_arg_0 = var_374; [L1089] SORT_1 var_375 = var_375_arg_0 != 0; [L1090] SORT_18 var_314_arg_0 = var_304; [L1091] SORT_18 var_314_arg_1 = var_313; [L1092] SORT_1 var_314 = var_314_arg_0 == var_314_arg_1; [L1093] SORT_1 var_315_arg_0 = var_314; [L1094] SORT_1 var_315 = ~var_315_arg_0; [L1095] SORT_18 var_311_arg_0 = var_304; [L1096] SORT_18 var_311_arg_1 = var_310; [L1097] SORT_1 var_311 = var_311_arg_0 == var_311_arg_1; [L1098] SORT_1 var_312_arg_0 = var_311; [L1099] SORT_1 var_312 = ~var_312_arg_0; [L1100] var_312 = var_312 & mask_SORT_1 [L1101] SORT_1 var_319_arg_0 = var_315; [L1102] SORT_1 var_319_arg_1 = var_312; [L1103] SORT_6 var_319 = ((SORT_6)var_319_arg_0 << 1) | var_319_arg_1; [L1104] var_319 = var_319 & mask_SORT_6 [L1105] SORT_6 var_320_arg_0 = var_319; [L1106] SORT_1 var_320 = var_320_arg_0 == mask_SORT_6; [L1107] SORT_1 var_376_arg_0 = var_375; [L1108] SORT_1 var_376_arg_1 = var_320; [L1109] SORT_6 var_376 = ((SORT_6)var_376_arg_0 << 1) | var_376_arg_1; [L1110] var_376 = var_376 & mask_SORT_6 [L1111] SORT_6 var_377_arg_0 = var_376; [L1112] SORT_1 var_377 = var_377_arg_0 == mask_SORT_6; [L1113] SORT_1 var_323_arg_0 = var_322; [L1114] SORT_1 var_323_arg_1 = var_306; [L1115] SORT_6 var_323 = ((SORT_6)var_323_arg_0 << 1) | var_323_arg_1; [L1116] var_323 = var_323 & mask_SORT_6 [L1117] SORT_6 var_324_arg_0 = var_323; [L1118] SORT_1 var_324 = var_324_arg_0 == mask_SORT_6; [L1119] SORT_1 var_325_arg_0 = var_324; [L1120] SORT_1 var_325_arg_1 = var_320; [L1121] SORT_6 var_325 = ((SORT_6)var_325_arg_0 << 1) | var_325_arg_1; [L1122] var_325 = var_325 & mask_SORT_6 [L1123] SORT_6 var_326_arg_0 = var_325; [L1124] SORT_1 var_326 = var_326_arg_0 == mask_SORT_6; [L1125] SORT_1 var_307_arg_0 = var_306; [L1126] SORT_1 var_307_arg_1 = var_41; [L1127] SORT_6 var_307 = ((SORT_6)var_307_arg_0 << 1) | var_307_arg_1; [L1128] var_307 = var_307 & mask_SORT_6 [L1129] SORT_1 var_308_arg_0 = var_37; [L1130] SORT_6 var_308_arg_1 = var_307; [L1131] SORT_8 var_308 = ((SORT_8)var_308_arg_0 << 2) | var_308_arg_1; [L1132] var_308 = var_308 & mask_SORT_8 [L1133] SORT_8 var_309_arg_0 = var_308; [L1134] SORT_1 var_309 = var_309_arg_0 == mask_SORT_8; [L1135] SORT_1 var_316_arg_0 = var_312; [L1136] SORT_1 var_316_arg_1 = var_309; [L1137] SORT_6 var_316 = ((SORT_6)var_316_arg_0 << 1) | var_316_arg_1; [L1138] var_316 = var_316 & mask_SORT_6 [L1139] SORT_1 var_317_arg_0 = var_315; [L1140] SORT_6 var_317_arg_1 = var_316; [L1141] SORT_8 var_317 = ((SORT_8)var_317_arg_0 << 2) | var_317_arg_1; [L1142] var_317 = var_317 & mask_SORT_8 [L1143] SORT_8 var_318_arg_0 = var_317; [L1144] SORT_1 var_318 = var_318_arg_0 == mask_SORT_8; [L1145] SORT_1 var_327_arg_0 = var_326; [L1146] SORT_1 var_327_arg_1 = var_318; [L1147] SORT_6 var_327 = ((SORT_6)var_327_arg_0 << 1) | var_327_arg_1; [L1148] var_327 = var_327 & mask_SORT_6 [L1149] SORT_6 var_328_arg_0 = var_327; [L1150] SORT_1 var_328 = var_328_arg_0 != 0; [L1151] SORT_1 var_345_arg_0 = var_344; [L1152] SORT_1 var_345_arg_1 = var_328; [L1153] SORT_6 var_345 = ((SORT_6)var_345_arg_0 << 1) | var_345_arg_1; [L1154] var_345 = var_345 & mask_SORT_6 [L1155] SORT_6 var_346_arg_0 = var_345; [L1156] SORT_1 var_346 = var_346_arg_0 == mask_SORT_6; [L1157] SORT_1 var_378_arg_0 = var_377; [L1158] SORT_1 var_378_arg_1 = var_346; [L1159] SORT_6 var_378 = ((SORT_6)var_378_arg_0 << 1) | var_378_arg_1; [L1160] var_378 = var_378 & mask_SORT_6 [L1161] SORT_6 var_379_arg_0 = var_378; [L1162] SORT_1 var_379 = var_379_arg_0 != 0; [L1163] SORT_1 var_382_arg_0 = state_45; [L1164] SORT_18 var_382_arg_1 = state_380; [L1165] SORT_18 var_382_arg_2 = input_19; [L1166] EXPR var_382_arg_0 ? var_382_arg_1 : var_382_arg_2 [L1166] SORT_18 var_382 = var_382_arg_0 ? var_382_arg_1 : var_382_arg_2; [L1167] SORT_1 var_383_arg_0 = var_52; [L1168] SORT_18 var_383_arg_1 = var_382; [L1169] SORT_18 var_383_arg_2 = var_42; [L1170] EXPR var_383_arg_0 ? var_383_arg_1 : var_383_arg_2 [L1170] SORT_18 var_383 = var_383_arg_0 ? var_383_arg_1 : var_383_arg_2; [L1171] SORT_1 var_384_arg_0 = var_54; [L1172] SORT_18 var_384_arg_1 = var_42; [L1173] SORT_18 var_384_arg_2 = var_383; [L1174] EXPR var_384_arg_0 ? var_384_arg_1 : var_384_arg_2 [L1174] SORT_18 var_384 = var_384_arg_0 ? var_384_arg_1 : var_384_arg_2; [L1175] SORT_1 var_385_arg_0 = var_303; [L1176] SORT_18 var_385_arg_1 = var_288; [L1177] SORT_18 var_385_arg_2 = var_384; [L1178] EXPR var_385_arg_0 ? var_385_arg_1 : var_385_arg_2 [L1178] SORT_18 var_385 = var_385_arg_0 ? var_385_arg_1 : var_385_arg_2; [L1179] var_385 = var_385 & mask_SORT_18 [L1180] SORT_18 var_386_arg_0 = var_385; [L1181] SORT_18 var_386_arg_1 = var_310; [L1182] SORT_1 var_386 = var_386_arg_0 == var_386_arg_1; [L1183] SORT_1 var_387_arg_0 = var_386; [L1184] SORT_1 var_387 = ~var_387_arg_0; [L1185] SORT_1 var_388_arg_0 = var_387; [L1186] SORT_1 var_388_arg_1 = var_309; [L1187] SORT_6 var_388 = ((SORT_6)var_388_arg_0 << 1) | var_388_arg_1; [L1188] var_388 = var_388 & mask_SORT_6 [L1189] SORT_1 var_389_arg_0 = var_315; [L1190] SORT_6 var_389_arg_1 = var_388; [L1191] SORT_8 var_389 = ((SORT_8)var_389_arg_0 << 2) | var_389_arg_1; [L1192] var_389 = var_389 & mask_SORT_8 [L1193] SORT_8 var_390_arg_0 = var_389; [L1194] SORT_1 var_390 = var_390_arg_0 == mask_SORT_8; [L1195] SORT_1 var_391_arg_0 = var_326; [L1196] SORT_1 var_391_arg_1 = var_390; [L1197] SORT_6 var_391 = ((SORT_6)var_391_arg_0 << 1) | var_391_arg_1; [L1198] var_391 = var_391 & mask_SORT_6 [L1199] SORT_6 var_392_arg_0 = var_391; [L1200] SORT_1 var_392 = var_392_arg_0 != 0; [L1201] SORT_1 var_393_arg_0 = var_344; [L1202] SORT_1 var_393_arg_1 = var_392; [L1203] SORT_6 var_393 = ((SORT_6)var_393_arg_0 << 1) | var_393_arg_1; [L1204] var_393 = var_393 & mask_SORT_6 [L1205] SORT_6 var_394_arg_0 = var_393; [L1206] SORT_1 var_394 = var_394_arg_0 == mask_SORT_6; [L1207] SORT_1 var_395_arg_0 = var_377; [L1208] SORT_1 var_395_arg_1 = var_394; [L1209] SORT_6 var_395 = ((SORT_6)var_395_arg_0 << 1) | var_395_arg_1; [L1210] var_395 = var_395 & mask_SORT_6 [L1211] SORT_6 var_396_arg_0 = var_395; [L1212] SORT_1 var_396 = var_396_arg_0 != 0; [L1213] SORT_1 var_397_arg_0 = var_379; [L1214] SORT_1 var_397_arg_1 = var_396; [L1215] SORT_1 var_397 = var_397_arg_0 == var_397_arg_1; [L1216] SORT_1 var_398_arg_0 = var_31; [L1217] SORT_1 var_398_arg_1 = var_397; [L1218] SORT_1 var_398 = var_398_arg_0 | var_398_arg_1; [L1219] SORT_1 var_401_arg_0 = var_398; [L1220] SORT_1 var_401 = ~var_401_arg_0; [L1221] SORT_1 var_402_arg_0 = var_56; [L1222] SORT_1 var_402_arg_1 = var_401; [L1223] SORT_1 var_402 = var_402_arg_0 & var_402_arg_1; [L1224] var_402 = var_402 & mask_SORT_1 [L1225] SORT_1 bad_403_arg_0 = var_402; [L1226] CALL __VERIFIER_assert(!(bad_403_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: 172.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 89.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-03 02:33:34,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/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_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/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_3f99f177-74b3-451e-8a97-2d3a4b972be4/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 0842e496ceaac3d13d858cc0582a001755cc3c52e4d707c236161f2153e0d0c9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:33:37,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:33:37,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:33:37,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:33:37,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:33:37,383 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:33:37,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:33:37,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:33:37,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:33:37,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:33:37,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:33:37,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:33:37,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:33:37,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:33:37,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:33:37,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:33:37,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:33:37,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:33:37,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:33:37,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:33:37,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:33:37,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:33:37,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:33:37,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:33:37,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:33:37,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:33:37,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:33:37,459 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:33:37,460 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:33:37,462 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:33:37,462 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:33:37,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:33:37,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:33:37,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:33:37,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:33:37,469 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:33:37,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:33:37,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:33:37,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:33:37,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:33:37,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:33:37,500 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 02:33:37,548 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:33:37,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:33:37,550 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:33:37,550 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:33:37,552 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:33:37,552 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:33:37,553 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:33:37,553 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:33:37,554 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:33:37,554 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:33:37,555 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:33:37,556 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:33:37,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:33:37,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:33:37,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:33:37,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:33:37,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:33:37,559 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 02:33:37,560 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 02:33:37,560 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 02:33:37,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:33:37,561 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:33:37,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:33:37,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:33:37,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 02:33:37,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:33:37,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:33:37,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:33:37,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:33:37,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:33:37,564 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 02:33:37,564 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 02:33:37,565 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:33:37,566 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:33:37,566 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 02:33:37,566 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_3f99f177-74b3-451e-8a97-2d3a4b972be4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0842e496ceaac3d13d858cc0582a001755cc3c52e4d707c236161f2153e0d0c9 [2022-11-03 02:33:38,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:33:38,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:33:38,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:33:38,065 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:33:38,066 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:33:38,068 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal3.c [2022-11-03 02:33:38,152 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/data/be4b9e93b/4e67e2213d1e4fdfa96d8f865115c405/FLAG0ceeb1b3a [2022-11-03 02:33:38,988 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:33:38,989 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal3.c [2022-11-03 02:33:39,017 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/data/be4b9e93b/4e67e2213d1e4fdfa96d8f865115c405/FLAG0ceeb1b3a [2022-11-03 02:33:39,109 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/data/be4b9e93b/4e67e2213d1e4fdfa96d8f865115c405 [2022-11-03 02:33:39,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:33:39,115 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:33:39,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:33:39,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:33:39,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:33:39,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:33:39" (1/1) ... [2022-11-03 02:33:39,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21f783cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:39, skipping insertion in model container [2022-11-03 02:33:39,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:33:39" (1/1) ... [2022-11-03 02:33:39,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:33:39,232 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:33:39,514 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_3f99f177-74b3-451e-8a97-2d3a4b972be4/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal3.c[1107,1120] [2022-11-03 02:33:39,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:33:39,945 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:33:39,959 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_3f99f177-74b3-451e-8a97-2d3a4b972be4/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal3.c[1107,1120] [2022-11-03 02:33:40,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:33:40,148 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:33:40,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:40 WrapperNode [2022-11-03 02:33:40,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:33:40,150 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:33:40,151 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:33:40,151 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:33:40,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:40" (1/1) ... [2022-11-03 02:33:40,219 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:40" (1/1) ... [2022-11-03 02:33:40,362 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2098 [2022-11-03 02:33:40,363 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:33:40,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:33:40,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:33:40,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:33:40,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:40" (1/1) ... [2022-11-03 02:33:40,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:40" (1/1) ... [2022-11-03 02:33:40,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:40" (1/1) ... [2022-11-03 02:33:40,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:40" (1/1) ... [2022-11-03 02:33:40,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:40" (1/1) ... [2022-11-03 02:33:40,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:40" (1/1) ... [2022-11-03 02:33:40,449 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:40" (1/1) ... [2022-11-03 02:33:40,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:40" (1/1) ... [2022-11-03 02:33:40,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:33:40,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:33:40,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:33:40,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:33:40,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:40" (1/1) ... [2022-11-03 02:33:40,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:33:40,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:33:40,554 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:33:40,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:33:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:33:40,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:33:41,236 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:33:41,239 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:33:43,211 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:33:43,229 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:33:43,229 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:33:43,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:33:43 BoogieIcfgContainer [2022-11-03 02:33:43,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:33:43,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:33:43,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:33:43,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:33:43,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:33:39" (1/3) ... [2022-11-03 02:33:43,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c0003c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:33:43, skipping insertion in model container [2022-11-03 02:33:43,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:40" (2/3) ... [2022-11-03 02:33:43,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c0003c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:33:43, skipping insertion in model container [2022-11-03 02:33:43,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:33:43" (3/3) ... [2022-11-03 02:33:43,245 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal3.c [2022-11-03 02:33:43,270 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:33:43,270 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:33:43,417 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:33:43,430 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;@711cde87, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:33:43,431 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:33:43,437 INFO L276 IsEmpty]: Start isEmpty. Operand has 223 states, 221 states have (on average 1.497737556561086) internal successors, (331), 222 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:33:43,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:33:43,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:43,458 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:33:43,459 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:33:43,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:43,470 INFO L85 PathProgramCache]: Analyzing trace with hash 771974483, now seen corresponding path program 1 times [2022-11-03 02:33:43,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:33:43,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [670922454] [2022-11-03 02:33:43,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:43,493 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:33:43,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:33:43,499 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:33:43,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 02:33:44,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:44,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:33:44,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:33:45,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:33:45,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:33:45,022 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:33:45,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [670922454] [2022-11-03 02:33:45,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [670922454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:33:45,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:33:45,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:33:45,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550842744] [2022-11-03 02:33:45,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:33:45,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:33:45,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:33:45,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:33:45,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:33:45,082 INFO L87 Difference]: Start difference. First operand has 223 states, 221 states have (on average 1.497737556561086) internal successors, (331), 222 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:33:45,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:33:45,543 INFO L93 Difference]: Finished difference Result 874 states and 1309 transitions. [2022-11-03 02:33:45,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:33:45,546 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:33:45,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:33:45,574 INFO L225 Difference]: With dead ends: 874 [2022-11-03 02:33:45,575 INFO L226 Difference]: Without dead ends: 653 [2022-11-03 02:33:45,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 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 02:33:45,587 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 2239 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2239 SdHoareTripleChecker+Valid, 1273 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 02:33:45,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2239 Valid, 1273 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:33:45,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2022-11-03 02:33:45,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 221. [2022-11-03 02:33:45,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.4863636363636363) internal successors, (327), 220 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:33:45,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 327 transitions. [2022-11-03 02:33:45,681 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 327 transitions. Word has length 129 [2022-11-03 02:33:45,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:33:45,682 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 327 transitions. [2022-11-03 02:33:45,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:33:45,683 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 327 transitions. [2022-11-03 02:33:45,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:33:45,688 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:45,688 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:33:45,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:33:45,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:33:45,890 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:33:45,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:45,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1719012369, now seen corresponding path program 1 times [2022-11-03 02:33:45,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:33:45,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [860115359] [2022-11-03 02:33:45,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:45,894 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:33:45,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:33:45,895 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:33:45,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 02:33:46,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:46,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:33:46,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:33:47,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:33:47,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:33:47,060 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:33:47,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [860115359] [2022-11-03 02:33:47,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [860115359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:33:47,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:33:47,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:33:47,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842925829] [2022-11-03 02:33:47,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:33:47,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:33:47,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:33:47,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:33:47,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:33:47,065 INFO L87 Difference]: Start difference. First operand 221 states and 327 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:33:47,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:33:47,386 INFO L93 Difference]: Finished difference Result 876 states and 1298 transitions. [2022-11-03 02:33:47,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:33:47,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:33:47,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:33:47,390 INFO L225 Difference]: With dead ends: 876 [2022-11-03 02:33:47,391 INFO L226 Difference]: Without dead ends: 657 [2022-11-03 02:33:47,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 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 02:33:47,394 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 2231 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2231 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:33:47,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2231 Valid, 1267 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:33:47,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2022-11-03 02:33:47,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 225. [2022-11-03 02:33:47,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.4821428571428572) internal successors, (332), 224 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:33:47,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 332 transitions. [2022-11-03 02:33:47,418 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 332 transitions. Word has length 129 [2022-11-03 02:33:47,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:33:47,421 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 332 transitions. [2022-11-03 02:33:47,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:33:47,423 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 332 transitions. [2022-11-03 02:33:47,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:33:47,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:47,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:33:47,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:33:47,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:33:47,645 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:33:47,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:47,646 INFO L85 PathProgramCache]: Analyzing trace with hash 626377167, now seen corresponding path program 1 times [2022-11-03 02:33:47,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:33:47,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345041310] [2022-11-03 02:33:47,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:47,649 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:33:47,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:33:47,653 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:33:47,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 02:33:48,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:48,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:33:48,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:33:48,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:33:48,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:33:48,728 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:33:48,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345041310] [2022-11-03 02:33:48,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345041310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:33:48,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:33:48,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:33:48,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116215117] [2022-11-03 02:33:48,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:33:48,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:33:48,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:33:48,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:33:48,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:33:48,737 INFO L87 Difference]: Start difference. First operand 225 states and 332 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:33:49,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:33:49,027 INFO L93 Difference]: Finished difference Result 882 states and 1304 transitions. [2022-11-03 02:33:49,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:33:49,028 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:33:49,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:33:49,031 INFO L225 Difference]: With dead ends: 882 [2022-11-03 02:33:49,031 INFO L226 Difference]: Without dead ends: 659 [2022-11-03 02:33:49,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 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 02:33:49,034 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 2225 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2225 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:33:49,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2225 Valid, 1269 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:33:49,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-11-03 02:33:49,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 227. [2022-11-03 02:33:49,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.4778761061946903) internal successors, (334), 226 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 02:33:49,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 334 transitions. [2022-11-03 02:33:49,047 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 334 transitions. Word has length 129 [2022-11-03 02:33:49,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:33:49,048 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 334 transitions. [2022-11-03 02:33:49,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:33:49,048 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 334 transitions. [2022-11-03 02:33:49,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:33:49,050 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:49,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:33:49,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:33:49,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:33:49,272 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:33:49,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:49,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1216098547, now seen corresponding path program 1 times [2022-11-03 02:33:49,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:33:49,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1844062864] [2022-11-03 02:33:49,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:49,276 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:33:49,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:33:49,281 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:33:49,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 02:33:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:50,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:33:50,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:33:50,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:33:50,333 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:33:50,333 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:33:50,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1844062864] [2022-11-03 02:33:50,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1844062864] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:33:50,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:33:50,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:33:50,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352907379] [2022-11-03 02:33:50,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:33:50,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:33:50,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:33:50,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:33:50,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:33:50,340 INFO L87 Difference]: Start difference. First operand 227 states and 334 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:33:51,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:33:51,253 INFO L93 Difference]: Finished difference Result 897 states and 1322 transitions. [2022-11-03 02:33:51,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 02:33:51,254 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:33:51,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:33:51,256 INFO L225 Difference]: With dead ends: 897 [2022-11-03 02:33:51,257 INFO L226 Difference]: Without dead ends: 672 [2022-11-03 02:33:51,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:33:51,259 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 2556 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2556 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:33:51,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2556 Valid, 1806 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 02:33:51,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2022-11-03 02:33:51,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 229. [2022-11-03 02:33:51,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 1.4736842105263157) internal successors, (336), 228 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:33:51,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 336 transitions. [2022-11-03 02:33:51,271 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 336 transitions. Word has length 129 [2022-11-03 02:33:51,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:33:51,272 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 336 transitions. [2022-11-03 02:33:51,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:33:51,273 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 336 transitions. [2022-11-03 02:33:51,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:33:51,274 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:51,275 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:33:51,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:33:51,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:33:51,491 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:33:51,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:51,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1548741685, now seen corresponding path program 1 times [2022-11-03 02:33:51,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:33:51,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1501978910] [2022-11-03 02:33:51,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:51,494 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:33:51,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:33:51,495 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:33:51,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 02:33:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:52,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 02:33:52,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:33:52,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:33:52,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:33:52,581 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:33:52,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1501978910] [2022-11-03 02:33:52,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1501978910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:33:52,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:33:52,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 02:33:52,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220892300] [2022-11-03 02:33:52,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:33:52,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 02:33:52,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:33:52,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 02:33:52,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:33:52,585 INFO L87 Difference]: Start difference. First operand 229 states and 336 transitions. Second operand has 12 states, 12 states have (on average 10.75) internal successors, (129), 12 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:33:54,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:33:54,238 INFO L93 Difference]: Finished difference Result 1153 states and 1685 transitions. [2022-11-03 02:33:54,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-03 02:33:54,239 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.75) internal successors, (129), 12 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:33:54,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:33:54,244 INFO L225 Difference]: With dead ends: 1153 [2022-11-03 02:33:54,245 INFO L226 Difference]: Without dead ends: 926 [2022-11-03 02:33:54,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=384, Invalid=1022, Unknown=0, NotChecked=0, Total=1406 [2022-11-03 02:33:54,247 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 5992 mSDsluCounter, 2405 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5992 SdHoareTripleChecker+Valid, 2707 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:33:54,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5992 Valid, 2707 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 02:33:54,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2022-11-03 02:33:54,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 239. [2022-11-03 02:33:54,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.4579831932773109) internal successors, (347), 238 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:33:54,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 347 transitions. [2022-11-03 02:33:54,262 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 347 transitions. Word has length 129 [2022-11-03 02:33:54,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:33:54,262 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 347 transitions. [2022-11-03 02:33:54,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.75) internal successors, (129), 12 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:33:54,263 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 347 transitions. [2022-11-03 02:33:54,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:33:54,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:54,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:33:54,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:33:54,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:33:54,487 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:33:54,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:54,488 INFO L85 PathProgramCache]: Analyzing trace with hash -2020098035, now seen corresponding path program 1 times [2022-11-03 02:33:54,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:33:54,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [254248476] [2022-11-03 02:33:54,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:54,489 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:33:54,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:33:54,491 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:33:54,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 02:33:55,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:55,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-03 02:33:55,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:33:55,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:33:55,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:33:55,833 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:33:55,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [254248476] [2022-11-03 02:33:55,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [254248476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:33:55,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:33:55,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:33:55,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936110890] [2022-11-03 02:33:55,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:33:55,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:33:55,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:33:55,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:33:55,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:33:55,837 INFO L87 Difference]: Start difference. First operand 239 states and 347 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:33:56,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:33:56,499 INFO L93 Difference]: Finished difference Result 924 states and 1349 transitions. [2022-11-03 02:33:56,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:33:56,500 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:33:56,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:33:56,503 INFO L225 Difference]: With dead ends: 924 [2022-11-03 02:33:56,504 INFO L226 Difference]: Without dead ends: 687 [2022-11-03 02:33:56,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:33:56,505 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 2209 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2209 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:33:56,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2209 Valid, 1223 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:33:56,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2022-11-03 02:33:56,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 245. [2022-11-03 02:33:56,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 1.4549180327868851) internal successors, (355), 244 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 02:33:56,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 355 transitions. [2022-11-03 02:33:56,520 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 355 transitions. Word has length 129 [2022-11-03 02:33:56,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:33:56,521 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 355 transitions. [2022-11-03 02:33:56,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:33:56,521 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 355 transitions. [2022-11-03 02:33:56,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:33:56,523 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:56,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:33:56,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-11-03 02:33:56,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:33:56,747 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:33:56,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:56,748 INFO L85 PathProgramCache]: Analyzing trace with hash 143518539, now seen corresponding path program 1 times [2022-11-03 02:33:56,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:33:56,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [159224953] [2022-11-03 02:33:56,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:56,750 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:33:56,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:33:56,756 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:33:56,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 02:33:57,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:57,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:33:57,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:33:57,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:33:57,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:33:57,698 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:33:57,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [159224953] [2022-11-03 02:33:57,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [159224953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:33:57,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:33:57,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:33:57,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911406386] [2022-11-03 02:33:57,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:33:57,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:33:57,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:33:57,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:33:57,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:33:57,702 INFO L87 Difference]: Start difference. First operand 245 states and 355 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:33:57,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:33:57,974 INFO L93 Difference]: Finished difference Result 1018 states and 1469 transitions. [2022-11-03 02:33:57,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:33:57,975 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:33:57,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:33:57,978 INFO L225 Difference]: With dead ends: 1018 [2022-11-03 02:33:57,979 INFO L226 Difference]: Without dead ends: 775 [2022-11-03 02:33:57,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 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 02:33:57,981 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 2194 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2194 SdHoareTripleChecker+Valid, 1385 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 02:33:57,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2194 Valid, 1385 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:33:57,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2022-11-03 02:33:57,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 247. [2022-11-03 02:33:57,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 1.451219512195122) internal successors, (357), 246 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 02:33:57,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 357 transitions. [2022-11-03 02:33:57,996 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 357 transitions. Word has length 129 [2022-11-03 02:33:57,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:33:57,997 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 357 transitions. [2022-11-03 02:33:57,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:33:57,997 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 357 transitions. [2022-11-03 02:33:57,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:33:57,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:57,999 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:33:58,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:33:58,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:33:58,221 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:33:58,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:58,222 INFO L85 PathProgramCache]: Analyzing trace with hash -479763063, now seen corresponding path program 1 times [2022-11-03 02:33:58,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:33:58,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655496428] [2022-11-03 02:33:58,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:58,224 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:33:58,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:33:58,225 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:33:58,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 02:33:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:58,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:33:58,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:33:59,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:33:59,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:33:59,152 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:33:59,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1655496428] [2022-11-03 02:33:59,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1655496428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:33:59,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:33:59,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:33:59,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749138014] [2022-11-03 02:33:59,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:33:59,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:33:59,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:33:59,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:33:59,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:33:59,155 INFO L87 Difference]: Start difference. First operand 247 states and 357 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:33:59,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:33:59,419 INFO L93 Difference]: Finished difference Result 1024 states and 1475 transitions. [2022-11-03 02:33:59,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:33:59,420 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:33:59,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:33:59,424 INFO L225 Difference]: With dead ends: 1024 [2022-11-03 02:33:59,424 INFO L226 Difference]: Without dead ends: 779 [2022-11-03 02:33:59,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 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 02:33:59,428 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 2186 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2186 SdHoareTripleChecker+Valid, 1391 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 02:33:59,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2186 Valid, 1391 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:33:59,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2022-11-03 02:33:59,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 251. [2022-11-03 02:33:59,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.448) internal successors, (362), 250 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:33:59,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 362 transitions. [2022-11-03 02:33:59,443 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 362 transitions. Word has length 129 [2022-11-03 02:33:59,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:33:59,444 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 362 transitions. [2022-11-03 02:33:59,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:33:59,445 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 362 transitions. [2022-11-03 02:33:59,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:33:59,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:59,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:33:59,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 02:33:59,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:33:59,669 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:33:59,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:59,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1948495559, now seen corresponding path program 1 times [2022-11-03 02:33:59,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:33:59,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [543599266] [2022-11-03 02:33:59,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:59,671 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:33:59,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:33:59,672 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:33:59,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 02:34:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:00,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:34:00,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:00,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:00,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:00,585 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:00,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [543599266] [2022-11-03 02:34:00,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [543599266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:00,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:00,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:34:00,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288381532] [2022-11-03 02:34:00,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:00,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:34:00,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:00,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:34:00,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:34:00,588 INFO L87 Difference]: Start difference. First operand 251 states and 362 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:00,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:00,867 INFO L93 Difference]: Finished difference Result 1030 states and 1481 transitions. [2022-11-03 02:34:00,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:34:00,868 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:34:00,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:00,871 INFO L225 Difference]: With dead ends: 1030 [2022-11-03 02:34:00,871 INFO L226 Difference]: Without dead ends: 781 [2022-11-03 02:34:00,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 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 02:34:00,873 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 2180 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2180 SdHoareTripleChecker+Valid, 1394 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 02:34:00,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2180 Valid, 1394 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:34:00,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2022-11-03 02:34:00,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 253. [2022-11-03 02:34:00,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.4444444444444444) internal successors, (364), 252 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:00,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 364 transitions. [2022-11-03 02:34:00,887 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 364 transitions. Word has length 129 [2022-11-03 02:34:00,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:00,887 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 364 transitions. [2022-11-03 02:34:00,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:00,888 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 364 transitions. [2022-11-03 02:34:00,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:34:00,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:00,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:00,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:01,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:01,107 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:01,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:01,108 INFO L85 PathProgramCache]: Analyzing trace with hash -448974971, now seen corresponding path program 1 times [2022-11-03 02:34:01,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:01,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [963794391] [2022-11-03 02:34:01,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:01,110 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:01,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:01,117 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:01,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 02:34:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:01,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:34:01,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:02,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:02,081 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:02,082 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:02,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [963794391] [2022-11-03 02:34:02,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [963794391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:02,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:02,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:34:02,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641707946] [2022-11-03 02:34:02,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:02,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:34:02,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:02,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:34:02,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:34:02,084 INFO L87 Difference]: Start difference. First operand 253 states and 364 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:02,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:02,334 INFO L93 Difference]: Finished difference Result 1038 states and 1490 transitions. [2022-11-03 02:34:02,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:34:02,335 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:34:02,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:02,338 INFO L225 Difference]: With dead ends: 1038 [2022-11-03 02:34:02,339 INFO L226 Difference]: Without dead ends: 787 [2022-11-03 02:34:02,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 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 02:34:02,341 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 2170 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2170 SdHoareTripleChecker+Valid, 1403 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 02:34:02,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2170 Valid, 1403 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:34:02,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-11-03 02:34:02,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 259. [2022-11-03 02:34:02,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 1.441860465116279) internal successors, (372), 258 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:02,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 372 transitions. [2022-11-03 02:34:02,355 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 372 transitions. Word has length 129 [2022-11-03 02:34:02,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:02,356 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 372 transitions. [2022-11-03 02:34:02,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:02,356 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 372 transitions. [2022-11-03 02:34:02,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:34:02,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:02,358 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:02,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:02,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:02,580 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:02,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:02,581 INFO L85 PathProgramCache]: Analyzing trace with hash -2067949885, now seen corresponding path program 1 times [2022-11-03 02:34:02,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:02,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98861541] [2022-11-03 02:34:02,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:02,582 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:02,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:02,584 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:02,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 02:34:03,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:03,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:34:03,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:03,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:03,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:03,457 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:03,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98861541] [2022-11-03 02:34:03,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [98861541] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:03,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:03,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:34:03,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730380081] [2022-11-03 02:34:03,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:03,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:34:03,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:03,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:34:03,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:34:03,459 INFO L87 Difference]: Start difference. First operand 259 states and 372 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:03,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:03,770 INFO L93 Difference]: Finished difference Result 1046 states and 1499 transitions. [2022-11-03 02:34:03,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:34:03,771 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:34:03,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:03,775 INFO L225 Difference]: With dead ends: 1046 [2022-11-03 02:34:03,776 INFO L226 Difference]: Without dead ends: 789 [2022-11-03 02:34:03,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 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 02:34:03,777 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 2164 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2164 SdHoareTripleChecker+Valid, 1402 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 02:34:03,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2164 Valid, 1402 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:34:03,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2022-11-03 02:34:03,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 261. [2022-11-03 02:34:03,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.4384615384615385) internal successors, (374), 260 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:03,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 374 transitions. [2022-11-03 02:34:03,791 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 374 transitions. Word has length 129 [2022-11-03 02:34:03,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:03,791 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 374 transitions. [2022-11-03 02:34:03,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:03,791 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 374 transitions. [2022-11-03 02:34:03,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:34:03,793 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:03,793 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:03,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:04,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:04,014 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:04,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:04,015 INFO L85 PathProgramCache]: Analyzing trace with hash -2096450175, now seen corresponding path program 1 times [2022-11-03 02:34:04,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:04,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530913467] [2022-11-03 02:34:04,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:04,016 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:04,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:04,017 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:04,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-03 02:34:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:04,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:34:04,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:05,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:05,040 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:05,040 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:05,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530913467] [2022-11-03 02:34:05,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530913467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:05,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:05,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:34:05,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496528078] [2022-11-03 02:34:05,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:05,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:34:05,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:05,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:34:05,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:34:05,043 INFO L87 Difference]: Start difference. First operand 261 states and 374 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:05,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:05,609 INFO L93 Difference]: Finished difference Result 1050 states and 1502 transitions. [2022-11-03 02:34:05,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:34:05,610 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:34:05,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:05,613 INFO L225 Difference]: With dead ends: 1050 [2022-11-03 02:34:05,613 INFO L226 Difference]: Without dead ends: 791 [2022-11-03 02:34:05,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 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 02:34:05,615 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 2158 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2158 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:05,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2158 Valid, 1325 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:34:05,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2022-11-03 02:34:05,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 263. [2022-11-03 02:34:05,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 1.4351145038167938) internal successors, (376), 262 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:05,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 376 transitions. [2022-11-03 02:34:05,627 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 376 transitions. Word has length 129 [2022-11-03 02:34:05,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:05,628 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 376 transitions. [2022-11-03 02:34:05,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:05,628 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 376 transitions. [2022-11-03 02:34:05,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:34:05,630 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:05,630 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:05,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:05,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:05,843 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:05,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:05,843 INFO L85 PathProgramCache]: Analyzing trace with hash -219386945, now seen corresponding path program 1 times [2022-11-03 02:34:05,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:05,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [927303975] [2022-11-03 02:34:05,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:05,845 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:05,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:05,846 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:05,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-03 02:34:06,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:06,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:34:06,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:06,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:06,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:06,698 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:06,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [927303975] [2022-11-03 02:34:06,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [927303975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:06,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:06,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:34:06,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123305596] [2022-11-03 02:34:06,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:06,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:34:06,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:06,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:34:06,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:34:06,701 INFO L87 Difference]: Start difference. First operand 263 states and 376 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:06,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:06,989 INFO L93 Difference]: Finished difference Result 1054 states and 1505 transitions. [2022-11-03 02:34:06,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:34:06,989 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:34:06,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:06,992 INFO L225 Difference]: With dead ends: 1054 [2022-11-03 02:34:06,993 INFO L226 Difference]: Without dead ends: 793 [2022-11-03 02:34:06,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 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 02:34:06,995 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 2152 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2152 SdHoareTripleChecker+Valid, 1408 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 02:34:06,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2152 Valid, 1408 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:34:06,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2022-11-03 02:34:07,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 265. [2022-11-03 02:34:07,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 264 states have (on average 1.4318181818181819) internal successors, (378), 264 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:07,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 378 transitions. [2022-11-03 02:34:07,009 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 378 transitions. Word has length 129 [2022-11-03 02:34:07,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:07,009 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 378 transitions. [2022-11-03 02:34:07,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:07,010 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 378 transitions. [2022-11-03 02:34:07,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:34:07,011 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:07,011 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:07,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:07,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:07,227 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:07,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:07,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1214080643, now seen corresponding path program 1 times [2022-11-03 02:34:07,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:07,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1733782424] [2022-11-03 02:34:07,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:07,228 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:07,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:07,229 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:07,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-03 02:34:07,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:07,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:34:07,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:08,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:08,107 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:08,107 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:08,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1733782424] [2022-11-03 02:34:08,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1733782424] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:08,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:08,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:34:08,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367264273] [2022-11-03 02:34:08,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:08,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:34:08,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:08,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:34:08,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:34:08,132 INFO L87 Difference]: Start difference. First operand 265 states and 378 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:08,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:08,448 INFO L93 Difference]: Finished difference Result 1058 states and 1508 transitions. [2022-11-03 02:34:08,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:34:08,449 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:34:08,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:08,452 INFO L225 Difference]: With dead ends: 1058 [2022-11-03 02:34:08,452 INFO L226 Difference]: Without dead ends: 795 [2022-11-03 02:34:08,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 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 02:34:08,454 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 2146 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2146 SdHoareTripleChecker+Valid, 1411 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 02:34:08,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2146 Valid, 1411 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:34:08,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2022-11-03 02:34:08,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 267. [2022-11-03 02:34:08,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.4285714285714286) internal successors, (380), 266 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:08,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 380 transitions. [2022-11-03 02:34:08,468 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 380 transitions. Word has length 129 [2022-11-03 02:34:08,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:08,468 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 380 transitions. [2022-11-03 02:34:08,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:08,468 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 380 transitions. [2022-11-03 02:34:08,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:34:08,469 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:08,470 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:08,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:08,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:08,691 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:08,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:08,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1122311867, now seen corresponding path program 1 times [2022-11-03 02:34:08,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:08,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217977209] [2022-11-03 02:34:08,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:08,693 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:08,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:08,694 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:08,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-03 02:34:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:09,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:34:09,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:09,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:09,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:09,679 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:09,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217977209] [2022-11-03 02:34:09,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217977209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:09,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:09,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:34:09,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573081704] [2022-11-03 02:34:09,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:09,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:34:09,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:09,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:34:09,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:34:09,682 INFO L87 Difference]: Start difference. First operand 267 states and 380 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:10,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:10,299 INFO L93 Difference]: Finished difference Result 1062 states and 1511 transitions. [2022-11-03 02:34:10,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:34:10,300 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:34:10,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:10,303 INFO L225 Difference]: With dead ends: 1062 [2022-11-03 02:34:10,303 INFO L226 Difference]: Without dead ends: 797 [2022-11-03 02:34:10,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 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 02:34:10,308 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 2140 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2140 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:10,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2140 Valid, 1334 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:34:10,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2022-11-03 02:34:10,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 269. [2022-11-03 02:34:10,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.4253731343283582) internal successors, (382), 268 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:10,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 382 transitions. [2022-11-03 02:34:10,322 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 382 transitions. Word has length 129 [2022-11-03 02:34:10,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:10,323 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 382 transitions. [2022-11-03 02:34:10,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:10,323 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 382 transitions. [2022-11-03 02:34:10,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:34:10,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:10,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:10,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:10,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:10,539 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:10,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:10,539 INFO L85 PathProgramCache]: Analyzing trace with hash -756819079, now seen corresponding path program 1 times [2022-11-03 02:34:10,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:10,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [31250284] [2022-11-03 02:34:10,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:10,541 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:10,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:10,542 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:10,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-03 02:34:11,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:11,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-03 02:34:11,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:12,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:12,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:12,028 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:12,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [31250284] [2022-11-03 02:34:12,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [31250284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:12,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:12,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:34:12,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288222975] [2022-11-03 02:34:12,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:12,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:34:12,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:12,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:34:12,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:34:12,031 INFO L87 Difference]: Start difference. First operand 269 states and 382 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:12,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:12,606 INFO L93 Difference]: Finished difference Result 1066 states and 1514 transitions. [2022-11-03 02:34:12,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:34:12,607 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:34:12,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:12,610 INFO L225 Difference]: With dead ends: 1066 [2022-11-03 02:34:12,610 INFO L226 Difference]: Without dead ends: 799 [2022-11-03 02:34:12,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 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 02:34:12,613 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 2134 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2134 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:12,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2134 Valid, 1357 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:34:12,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2022-11-03 02:34:12,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 271. [2022-11-03 02:34:12,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 1.4222222222222223) internal successors, (384), 270 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:12,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 384 transitions. [2022-11-03 02:34:12,630 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 384 transitions. Word has length 129 [2022-11-03 02:34:12,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:12,630 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 384 transitions. [2022-11-03 02:34:12,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:12,631 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 384 transitions. [2022-11-03 02:34:12,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:34:12,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:12,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:12,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:12,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:12,847 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:12,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:12,847 INFO L85 PathProgramCache]: Analyzing trace with hash 809938871, now seen corresponding path program 1 times [2022-11-03 02:34:12,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:12,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2078193036] [2022-11-03 02:34:12,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:12,849 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:12,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:12,850 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:12,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-03 02:34:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:13,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 02:34:13,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:13,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:13,899 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:13,899 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:13,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2078193036] [2022-11-03 02:34:13,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2078193036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:13,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:13,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:34:13,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306038370] [2022-11-03 02:34:13,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:13,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:34:13,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:13,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:34:13,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:34:13,902 INFO L87 Difference]: Start difference. First operand 271 states and 384 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:14,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:14,300 INFO L93 Difference]: Finished difference Result 882 states and 1238 transitions. [2022-11-03 02:34:14,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:34:14,301 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:34:14,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:14,303 INFO L225 Difference]: With dead ends: 882 [2022-11-03 02:34:14,304 INFO L226 Difference]: Without dead ends: 613 [2022-11-03 02:34:14,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:34:14,305 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 614 mSDsluCounter, 1399 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 1786 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:14,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [614 Valid, 1786 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 14 Unchecked, 0.3s Time] [2022-11-03 02:34:14,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2022-11-03 02:34:14,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 345. [2022-11-03 02:34:14,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 1.380813953488372) internal successors, (475), 344 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:14,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 475 transitions. [2022-11-03 02:34:14,326 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 475 transitions. Word has length 129 [2022-11-03 02:34:14,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:14,326 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 475 transitions. [2022-11-03 02:34:14,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:14,327 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 475 transitions. [2022-11-03 02:34:14,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:34:14,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:14,328 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:14,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:14,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:14,545 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:14,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:14,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1952441337, now seen corresponding path program 1 times [2022-11-03 02:34:14,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:14,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [812233926] [2022-11-03 02:34:14,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:14,546 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:14,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:14,547 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:14,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-03 02:34:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:15,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:34:15,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:15,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:15,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:15,517 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:15,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [812233926] [2022-11-03 02:34:15,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [812233926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:15,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:15,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:34:15,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822505375] [2022-11-03 02:34:15,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:15,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:34:15,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:15,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:34:15,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:34:15,520 INFO L87 Difference]: Start difference. First operand 345 states and 475 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:15,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:15,880 INFO L93 Difference]: Finished difference Result 1057 states and 1496 transitions. [2022-11-03 02:34:15,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:34:15,881 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:34:15,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:15,884 INFO L225 Difference]: With dead ends: 1057 [2022-11-03 02:34:15,884 INFO L226 Difference]: Without dead ends: 788 [2022-11-03 02:34:15,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 124 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 02:34:15,886 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 2019 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2019 SdHoareTripleChecker+Valid, 1382 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 02:34:15,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2019 Valid, 1382 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:34:15,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2022-11-03 02:34:15,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 349. [2022-11-03 02:34:15,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.3793103448275863) internal successors, (480), 348 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:15,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 480 transitions. [2022-11-03 02:34:15,904 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 480 transitions. Word has length 129 [2022-11-03 02:34:15,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:15,904 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 480 transitions. [2022-11-03 02:34:15,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:15,905 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 480 transitions. [2022-11-03 02:34:15,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:34:15,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:15,906 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:15,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:16,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:16,125 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:16,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:16,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1503492297, now seen corresponding path program 1 times [2022-11-03 02:34:16,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:16,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785738568] [2022-11-03 02:34:16,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:16,128 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:16,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:16,130 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:16,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-03 02:34:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:16,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:34:16,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:17,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:17,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:17,201 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:17,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1785738568] [2022-11-03 02:34:17,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1785738568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:17,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:17,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:34:17,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144208327] [2022-11-03 02:34:17,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:17,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:34:17,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:17,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:34:17,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:34:17,204 INFO L87 Difference]: Start difference. First operand 349 states and 480 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:17,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:17,839 INFO L93 Difference]: Finished difference Result 1166 states and 1637 transitions. [2022-11-03 02:34:17,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:34:17,840 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:34:17,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:17,843 INFO L225 Difference]: With dead ends: 1166 [2022-11-03 02:34:17,843 INFO L226 Difference]: Without dead ends: 893 [2022-11-03 02:34:17,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 123 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 02:34:17,845 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 2469 mSDsluCounter, 1625 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2469 SdHoareTripleChecker+Valid, 2011 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:17,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2469 Valid, 2011 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:34:17,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2022-11-03 02:34:17,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 351. [2022-11-03 02:34:17,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 1.3771428571428572) internal successors, (482), 350 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 02:34:17,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 482 transitions. [2022-11-03 02:34:17,868 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 482 transitions. Word has length 129 [2022-11-03 02:34:17,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:17,868 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 482 transitions. [2022-11-03 02:34:17,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:17,869 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 482 transitions. [2022-11-03 02:34:17,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:34:17,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:17,870 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:17,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:18,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:18,092 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:18,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:18,092 INFO L85 PathProgramCache]: Analyzing trace with hash 714138101, now seen corresponding path program 1 times [2022-11-03 02:34:18,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:18,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1167632951] [2022-11-03 02:34:18,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:18,094 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:18,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:18,095 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:18,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-03 02:34:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:18,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:34:18,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:19,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:19,384 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:19,384 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:19,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1167632951] [2022-11-03 02:34:19,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1167632951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:19,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:19,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:34:19,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109124150] [2022-11-03 02:34:19,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:19,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:34:19,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:19,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:34:19,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:34:19,387 INFO L87 Difference]: Start difference. First operand 351 states and 482 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:20,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:20,238 INFO L93 Difference]: Finished difference Result 1170 states and 1640 transitions. [2022-11-03 02:34:20,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:34:20,239 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:34:20,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:20,242 INFO L225 Difference]: With dead ends: 1170 [2022-11-03 02:34:20,242 INFO L226 Difference]: Without dead ends: 895 [2022-11-03 02:34:20,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 123 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 02:34:20,244 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 2459 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2459 SdHoareTripleChecker+Valid, 1923 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:20,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2459 Valid, 1923 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:34:20,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2022-11-03 02:34:20,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 353. [2022-11-03 02:34:20,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 1.375) internal successors, (484), 352 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 02:34:20,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 484 transitions. [2022-11-03 02:34:20,264 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 484 transitions. Word has length 129 [2022-11-03 02:34:20,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:20,264 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 484 transitions. [2022-11-03 02:34:20,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:20,265 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 484 transitions. [2022-11-03 02:34:20,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:34:20,266 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:20,266 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:20,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:20,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:20,488 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:20,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:20,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1601360947, now seen corresponding path program 1 times [2022-11-03 02:34:20,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:20,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683522370] [2022-11-03 02:34:20,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:20,490 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:20,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:20,491 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:20,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-03 02:34:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:21,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:34:21,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:21,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:21,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:21,480 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:21,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [683522370] [2022-11-03 02:34:21,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [683522370] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:21,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:21,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:34:21,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410021443] [2022-11-03 02:34:21,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:21,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:34:21,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:21,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:34:21,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:34:21,484 INFO L87 Difference]: Start difference. First operand 353 states and 484 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:21,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:21,975 INFO L93 Difference]: Finished difference Result 1174 states and 1643 transitions. [2022-11-03 02:34:21,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:34:21,975 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:34:21,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:21,979 INFO L225 Difference]: With dead ends: 1174 [2022-11-03 02:34:21,979 INFO L226 Difference]: Without dead ends: 897 [2022-11-03 02:34:21,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 123 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 02:34:21,980 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 2455 mSDsluCounter, 1625 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2455 SdHoareTripleChecker+Valid, 2017 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:21,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2455 Valid, 2017 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:34:21,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2022-11-03 02:34:21,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 355. [2022-11-03 02:34:21,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.3728813559322033) internal successors, (486), 354 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 02:34:21,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 486 transitions. [2022-11-03 02:34:21,999 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 486 transitions. Word has length 129 [2022-11-03 02:34:21,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:21,999 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 486 transitions. [2022-11-03 02:34:21,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:22,000 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 486 transitions. [2022-11-03 02:34:22,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:34:22,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:22,001 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:22,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:22,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:22,215 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:22,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:22,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1678261745, now seen corresponding path program 1 times [2022-11-03 02:34:22,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:22,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044716601] [2022-11-03 02:34:22,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:22,217 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:22,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:22,219 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:22,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-03 02:34:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:22,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:34:22,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:23,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:23,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:23,171 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:23,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044716601] [2022-11-03 02:34:23,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044716601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:23,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:23,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:34:23,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607470076] [2022-11-03 02:34:23,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:23,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:34:23,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:23,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:34:23,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:34:23,174 INFO L87 Difference]: Start difference. First operand 355 states and 486 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:23,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:23,706 INFO L93 Difference]: Finished difference Result 1178 states and 1646 transitions. [2022-11-03 02:34:23,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:34:23,709 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:34:23,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:23,711 INFO L225 Difference]: With dead ends: 1178 [2022-11-03 02:34:23,711 INFO L226 Difference]: Without dead ends: 899 [2022-11-03 02:34:23,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 123 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 02:34:23,713 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 2448 mSDsluCounter, 1625 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2448 SdHoareTripleChecker+Valid, 2020 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 02:34:23,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2448 Valid, 2020 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:34:23,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2022-11-03 02:34:23,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 357. [2022-11-03 02:34:23,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 1.3707865168539326) internal successors, (488), 356 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 02:34:23,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 488 transitions. [2022-11-03 02:34:23,735 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 488 transitions. Word has length 129 [2022-11-03 02:34:23,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:23,735 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 488 transitions. [2022-11-03 02:34:23,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:23,736 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 488 transitions. [2022-11-03 02:34:23,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:34:23,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:23,737 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:23,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-11-03 02:34:23,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:23,951 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:23,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:23,951 INFO L85 PathProgramCache]: Analyzing trace with hash -708247761, now seen corresponding path program 1 times [2022-11-03 02:34:23,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:23,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1207969766] [2022-11-03 02:34:23,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:23,953 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:23,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:23,954 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:23,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-03 02:34:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:24,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:34:24,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:25,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:25,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:25,213 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:25,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1207969766] [2022-11-03 02:34:25,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1207969766] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:25,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:25,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:34:25,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296940629] [2022-11-03 02:34:25,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:25,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:34:25,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:25,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:34:25,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:34:25,216 INFO L87 Difference]: Start difference. First operand 357 states and 488 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:26,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:26,044 INFO L93 Difference]: Finished difference Result 1182 states and 1649 transitions. [2022-11-03 02:34:26,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:34:26,047 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:34:26,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:26,050 INFO L225 Difference]: With dead ends: 1182 [2022-11-03 02:34:26,051 INFO L226 Difference]: Without dead ends: 901 [2022-11-03 02:34:26,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 123 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 02:34:26,052 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 2438 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2438 SdHoareTripleChecker+Valid, 1932 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:26,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2438 Valid, 1932 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:34:26,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2022-11-03 02:34:26,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 359. [2022-11-03 02:34:26,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.3687150837988826) internal successors, (490), 358 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:26,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 490 transitions. [2022-11-03 02:34:26,071 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 490 transitions. Word has length 129 [2022-11-03 02:34:26,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:26,071 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 490 transitions. [2022-11-03 02:34:26,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:26,072 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 490 transitions. [2022-11-03 02:34:26,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:34:26,073 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:26,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:26,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-11-03 02:34:26,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:26,292 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:26,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:26,292 INFO L85 PathProgramCache]: Analyzing trace with hash 245692397, now seen corresponding path program 1 times [2022-11-03 02:34:26,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:26,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521706275] [2022-11-03 02:34:26,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:26,293 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:26,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:26,295 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:26,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-03 02:34:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:26,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:34:26,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:27,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:27,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:27,266 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:27,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521706275] [2022-11-03 02:34:27,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [521706275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:27,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:27,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:34:27,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798448012] [2022-11-03 02:34:27,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:27,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:34:27,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:27,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:34:27,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:34:27,269 INFO L87 Difference]: Start difference. First operand 359 states and 490 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:27,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:27,624 INFO L93 Difference]: Finished difference Result 1085 states and 1520 transitions. [2022-11-03 02:34:27,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:34:27,625 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:34:27,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:27,629 INFO L225 Difference]: With dead ends: 1085 [2022-11-03 02:34:27,630 INFO L226 Difference]: Without dead ends: 802 [2022-11-03 02:34:27,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 124 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 02:34:27,632 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 1981 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1981 SdHoareTripleChecker+Valid, 1402 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:27,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1981 Valid, 1402 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:34:27,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2022-11-03 02:34:27,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 363. [2022-11-03 02:34:27,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 1.367403314917127) internal successors, (495), 362 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:27,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 495 transitions. [2022-11-03 02:34:27,658 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 495 transitions. Word has length 129 [2022-11-03 02:34:27,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:27,658 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 495 transitions. [2022-11-03 02:34:27,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:27,659 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 495 transitions. [2022-11-03 02:34:27,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:34:27,669 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:27,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:27,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:27,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:27,883 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:27,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:27,883 INFO L85 PathProgramCache]: Analyzing trace with hash 191299499, now seen corresponding path program 1 times [2022-11-03 02:34:27,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:27,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1264086268] [2022-11-03 02:34:27,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:27,884 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:27,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:27,885 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:27,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-03 02:34:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:28,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:34:28,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:28,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:28,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:28,859 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:28,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1264086268] [2022-11-03 02:34:28,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1264086268] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:28,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:28,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:34:28,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91890214] [2022-11-03 02:34:28,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:28,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:34:28,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:28,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:34:28,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:34:28,861 INFO L87 Difference]: Start difference. First operand 363 states and 495 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:29,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:29,369 INFO L93 Difference]: Finished difference Result 1222 states and 1697 transitions. [2022-11-03 02:34:29,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:34:29,371 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:34:29,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:29,373 INFO L225 Difference]: With dead ends: 1222 [2022-11-03 02:34:29,373 INFO L226 Difference]: Without dead ends: 935 [2022-11-03 02:34:29,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 123 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 02:34:29,374 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 2482 mSDsluCounter, 1625 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2482 SdHoareTripleChecker+Valid, 2031 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 02:34:29,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2482 Valid, 2031 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:34:29,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2022-11-03 02:34:29,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 365. [2022-11-03 02:34:29,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.3653846153846154) internal successors, (497), 364 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:29,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 497 transitions. [2022-11-03 02:34:29,396 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 497 transitions. Word has length 129 [2022-11-03 02:34:29,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:29,397 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 497 transitions. [2022-11-03 02:34:29,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:29,397 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 497 transitions. [2022-11-03 02:34:29,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:34:29,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:29,399 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:29,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:29,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:29,620 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:29,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:29,621 INFO L85 PathProgramCache]: Analyzing trace with hash 870571753, now seen corresponding path program 1 times [2022-11-03 02:34:29,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:29,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [629480016] [2022-11-03 02:34:29,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:29,622 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:29,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:29,624 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:29,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-03 02:34:30,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:30,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:34:30,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:30,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:30,973 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:30,973 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:30,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [629480016] [2022-11-03 02:34:30,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [629480016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:30,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:30,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:34:30,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308787035] [2022-11-03 02:34:30,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:30,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:34:30,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:30,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:34:30,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:34:30,977 INFO L87 Difference]: Start difference. First operand 365 states and 497 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:31,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:31,833 INFO L93 Difference]: Finished difference Result 1226 states and 1700 transitions. [2022-11-03 02:34:31,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:34:31,833 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:34:31,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:31,837 INFO L225 Difference]: With dead ends: 1226 [2022-11-03 02:34:31,837 INFO L226 Difference]: Without dead ends: 937 [2022-11-03 02:34:31,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 123 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 02:34:31,839 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 2472 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2472 SdHoareTripleChecker+Valid, 1943 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:31,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2472 Valid, 1943 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:34:31,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2022-11-03 02:34:31,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 367. [2022-11-03 02:34:31,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 366 states have (on average 1.3633879781420766) internal successors, (499), 366 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:31,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 499 transitions. [2022-11-03 02:34:31,861 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 499 transitions. Word has length 129 [2022-11-03 02:34:31,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:31,861 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 499 transitions. [2022-11-03 02:34:31,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:31,862 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 499 transitions. [2022-11-03 02:34:31,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:34:31,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:31,863 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:31,885 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-11-03 02:34:32,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:32,077 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:32,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:32,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1072395687, now seen corresponding path program 1 times [2022-11-03 02:34:32,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:32,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [910166039] [2022-11-03 02:34:32,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:32,079 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:32,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:32,080 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:32,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-03 02:34:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:32,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:34:32,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:33,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:33,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:33,063 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:33,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [910166039] [2022-11-03 02:34:33,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [910166039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:33,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:33,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:34:33,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781848380] [2022-11-03 02:34:33,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:33,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:34:33,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:33,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:34:33,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:34:33,065 INFO L87 Difference]: Start difference. First operand 367 states and 499 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:33,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:33,394 INFO L93 Difference]: Finished difference Result 1099 states and 1532 transitions. [2022-11-03 02:34:33,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:34:33,395 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:34:33,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:33,399 INFO L225 Difference]: With dead ends: 1099 [2022-11-03 02:34:33,399 INFO L226 Difference]: Without dead ends: 808 [2022-11-03 02:34:33,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 124 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 02:34:33,400 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 1963 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1963 SdHoareTripleChecker+Valid, 1410 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:33,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1963 Valid, 1410 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:34:33,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2022-11-03 02:34:33,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 369. [2022-11-03 02:34:33,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 1.361413043478261) internal successors, (501), 368 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:33,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 501 transitions. [2022-11-03 02:34:33,421 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 501 transitions. Word has length 129 [2022-11-03 02:34:33,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:33,422 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 501 transitions. [2022-11-03 02:34:33,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:33,422 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 501 transitions. [2022-11-03 02:34:33,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:34:33,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:33,423 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:33,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2022-11-03 02:34:33,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:33,639 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:33,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:33,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1506124773, now seen corresponding path program 1 times [2022-11-03 02:34:33,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:33,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769992015] [2022-11-03 02:34:33,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:33,641 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:33,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:33,642 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:33,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-03 02:34:34,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:34,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:34:34,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:34,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:34,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:34,660 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:34,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769992015] [2022-11-03 02:34:34,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769992015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:34,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:34,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:34:34,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745394526] [2022-11-03 02:34:34,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:34,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:34:34,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:34,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:34:34,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:34:34,663 INFO L87 Difference]: Start difference. First operand 369 states and 501 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:34,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:34,994 INFO L93 Difference]: Finished difference Result 1103 states and 1535 transitions. [2022-11-03 02:34:34,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:34:34,995 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:34:34,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:34,998 INFO L225 Difference]: With dead ends: 1103 [2022-11-03 02:34:34,998 INFO L226 Difference]: Without dead ends: 810 [2022-11-03 02:34:34,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 124 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 02:34:34,999 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 1957 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1957 SdHoareTripleChecker+Valid, 1412 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:35,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1957 Valid, 1412 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:34:35,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2022-11-03 02:34:35,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 371. [2022-11-03 02:34:35,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 1.3594594594594596) internal successors, (503), 370 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:35,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 503 transitions. [2022-11-03 02:34:35,019 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 503 transitions. Word has length 129 [2022-11-03 02:34:35,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:35,019 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 503 transitions. [2022-11-03 02:34:35,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:35,020 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 503 transitions. [2022-11-03 02:34:35,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:34:35,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:35,021 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:35,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:35,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:35,242 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:35,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:35,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1546799523, now seen corresponding path program 1 times [2022-11-03 02:34:35,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:35,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882591815] [2022-11-03 02:34:35,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:35,244 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:35,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:35,245 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:35,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-03 02:34:35,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:35,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:34:35,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:36,563 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 02:34:36,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:36,564 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:36,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882591815] [2022-11-03 02:34:36,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [882591815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:36,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:36,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:34:36,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131429325] [2022-11-03 02:34:36,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:36,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:34:36,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:36,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:34:36,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:34:36,566 INFO L87 Difference]: Start difference. First operand 371 states and 503 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:37,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:37,405 INFO L93 Difference]: Finished difference Result 1250 states and 1724 transitions. [2022-11-03 02:34:37,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:34:37,406 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:34:37,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:37,411 INFO L225 Difference]: With dead ends: 1250 [2022-11-03 02:34:37,411 INFO L226 Difference]: Without dead ends: 955 [2022-11-03 02:34:37,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 123 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 02:34:37,412 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 2475 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2475 SdHoareTripleChecker+Valid, 1950 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:37,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2475 Valid, 1950 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:34:37,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2022-11-03 02:34:37,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 373. [2022-11-03 02:34:37,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 1.35752688172043) internal successors, (505), 372 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:37,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 505 transitions. [2022-11-03 02:34:37,434 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 505 transitions. Word has length 129 [2022-11-03 02:34:37,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:37,434 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 505 transitions. [2022-11-03 02:34:37,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:37,434 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 505 transitions. [2022-11-03 02:34:37,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:34:37,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:37,436 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:37,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:37,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:37,650 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:37,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:37,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1872148767, now seen corresponding path program 1 times [2022-11-03 02:34:37,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:37,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1681741785] [2022-11-03 02:34:37,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:37,653 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:37,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:37,653 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:37,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-03 02:34:38,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:38,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-03 02:34:38,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:39,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:39,639 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:39,639 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:39,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1681741785] [2022-11-03 02:34:39,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1681741785] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:39,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:39,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:34:39,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529863386] [2022-11-03 02:34:39,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:39,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:34:39,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:39,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:34:39,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:34:39,641 INFO L87 Difference]: Start difference. First operand 373 states and 505 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:40,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:40,492 INFO L93 Difference]: Finished difference Result 1242 states and 1712 transitions. [2022-11-03 02:34:40,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:34:40,492 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:34:40,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:40,495 INFO L225 Difference]: With dead ends: 1242 [2022-11-03 02:34:40,495 INFO L226 Difference]: Without dead ends: 945 [2022-11-03 02:34:40,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 123 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 02:34:40,496 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 2444 mSDsluCounter, 1568 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2444 SdHoareTripleChecker+Valid, 1974 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 02:34:40,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2444 Valid, 1974 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:34:40,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2022-11-03 02:34:40,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 375. [2022-11-03 02:34:40,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 1.3556149732620322) internal successors, (507), 374 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:40,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 507 transitions. [2022-11-03 02:34:40,508 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 507 transitions. Word has length 129 [2022-11-03 02:34:40,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:40,508 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 507 transitions. [2022-11-03 02:34:40,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:40,509 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 507 transitions. [2022-11-03 02:34:40,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:34:40,510 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:40,510 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:40,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2022-11-03 02:34:40,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:40,715 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:40,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:40,715 INFO L85 PathProgramCache]: Analyzing trace with hash -333808737, now seen corresponding path program 1 times [2022-11-03 02:34:40,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:40,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112706007] [2022-11-03 02:34:40,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:40,717 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:40,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:40,718 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:40,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-03 02:34:41,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:41,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-03 02:34:41,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:43,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:43,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:43,939 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:43,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2112706007] [2022-11-03 02:34:43,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2112706007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:43,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:43,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:34:43,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298544442] [2022-11-03 02:34:43,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:43,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:34:43,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:43,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:34:43,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:34:43,942 INFO L87 Difference]: Start difference. First operand 375 states and 507 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:45,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:45,097 INFO L93 Difference]: Finished difference Result 1218 states and 1679 transitions. [2022-11-03 02:34:45,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:34:45,098 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:34:45,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:45,102 INFO L225 Difference]: With dead ends: 1218 [2022-11-03 02:34:45,103 INFO L226 Difference]: Without dead ends: 919 [2022-11-03 02:34:45,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:34:45,105 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 2380 mSDsluCounter, 1568 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2380 SdHoareTripleChecker+Valid, 1977 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:45,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2380 Valid, 1977 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:34:45,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2022-11-03 02:34:45,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 377. [2022-11-03 02:34:45,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 1.3537234042553192) internal successors, (509), 376 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:45,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 509 transitions. [2022-11-03 02:34:45,126 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 509 transitions. Word has length 129 [2022-11-03 02:34:45,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:45,126 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 509 transitions. [2022-11-03 02:34:45,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:45,127 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 509 transitions. [2022-11-03 02:34:45,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:34:45,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:45,128 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:45,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2022-11-03 02:34:45,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:45,331 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:45,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:45,331 INFO L85 PathProgramCache]: Analyzing trace with hash -814888995, now seen corresponding path program 1 times [2022-11-03 02:34:45,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:45,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1630741494] [2022-11-03 02:34:45,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:45,332 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:45,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:45,333 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:45,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-03 02:34:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:45,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 02:34:45,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:46,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:46,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:46,455 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:46,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1630741494] [2022-11-03 02:34:46,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1630741494] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:46,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:46,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:34:46,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611966421] [2022-11-03 02:34:46,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:46,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:34:46,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:46,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:34:46,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:34:46,457 INFO L87 Difference]: Start difference. First operand 377 states and 509 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:46,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:46,818 INFO L93 Difference]: Finished difference Result 1010 states and 1373 transitions. [2022-11-03 02:34:46,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:34:46,819 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:34:46,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:46,822 INFO L225 Difference]: With dead ends: 1010 [2022-11-03 02:34:46,822 INFO L226 Difference]: Without dead ends: 709 [2022-11-03 02:34:46,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 124 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 02:34:46,824 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 567 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 1972 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:46,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 1972 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 13 Unchecked, 0.3s Time] [2022-11-03 02:34:46,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2022-11-03 02:34:46,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 409. [2022-11-03 02:34:46,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 408 states have (on average 1.3284313725490196) internal successors, (542), 408 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:46,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 542 transitions. [2022-11-03 02:34:46,846 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 542 transitions. Word has length 129 [2022-11-03 02:34:46,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:46,846 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 542 transitions. [2022-11-03 02:34:46,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:46,847 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 542 transitions. [2022-11-03 02:34:46,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:34:46,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:46,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:46,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2022-11-03 02:34:47,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:47,059 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:47,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:47,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1540916255, now seen corresponding path program 1 times [2022-11-03 02:34:47,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:47,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259060434] [2022-11-03 02:34:47,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:47,061 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:47,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:47,062 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:47,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-03 02:34:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:47,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 02:34:47,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:48,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:48,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:48,160 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:48,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259060434] [2022-11-03 02:34:48,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259060434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:48,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:48,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:34:48,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904461719] [2022-11-03 02:34:48,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:48,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:34:48,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:48,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:34:48,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:34:48,162 INFO L87 Difference]: Start difference. First operand 409 states and 542 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:48,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:48,811 INFO L93 Difference]: Finished difference Result 1372 states and 1878 transitions. [2022-11-03 02:34:48,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:34:48,812 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:34:48,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:48,815 INFO L225 Difference]: With dead ends: 1372 [2022-11-03 02:34:48,815 INFO L226 Difference]: Without dead ends: 1071 [2022-11-03 02:34:48,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 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 02:34:48,816 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 2039 mSDsluCounter, 1260 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2039 SdHoareTripleChecker+Valid, 1681 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:48,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2039 Valid, 1681 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:34:48,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2022-11-03 02:34:48,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 411. [2022-11-03 02:34:48,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 410 states have (on average 1.326829268292683) internal successors, (544), 410 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:48,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 544 transitions. [2022-11-03 02:34:48,832 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 544 transitions. Word has length 129 [2022-11-03 02:34:48,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:48,832 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 544 transitions. [2022-11-03 02:34:48,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:48,832 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 544 transitions. [2022-11-03 02:34:48,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:34:48,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:48,833 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:48,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2022-11-03 02:34:49,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:49,034 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:49,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:49,034 INFO L85 PathProgramCache]: Analyzing trace with hash -508471587, now seen corresponding path program 1 times [2022-11-03 02:34:49,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:49,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [984744898] [2022-11-03 02:34:49,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:49,036 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:49,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:49,038 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:49,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-03 02:34:49,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:49,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-03 02:34:49,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:50,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:50,824 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:50,824 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:50,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [984744898] [2022-11-03 02:34:50,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [984744898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:50,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:50,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:34:50,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027436901] [2022-11-03 02:34:50,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:50,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:34:50,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:50,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:34:50,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:34:50,828 INFO L87 Difference]: Start difference. First operand 411 states and 544 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:51,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:51,471 INFO L93 Difference]: Finished difference Result 1376 states and 1881 transitions. [2022-11-03 02:34:51,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:34:51,472 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:34:51,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:51,473 INFO L225 Difference]: With dead ends: 1376 [2022-11-03 02:34:51,474 INFO L226 Difference]: Without dead ends: 1073 [2022-11-03 02:34:51,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 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 02:34:51,475 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 2033 mSDsluCounter, 1233 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2033 SdHoareTripleChecker+Valid, 1648 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:51,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2033 Valid, 1648 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:34:51,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2022-11-03 02:34:51,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 413. [2022-11-03 02:34:51,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 1.325242718446602) internal successors, (546), 412 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:51,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 546 transitions. [2022-11-03 02:34:51,518 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 546 transitions. Word has length 129 [2022-11-03 02:34:51,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:51,518 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 546 transitions. [2022-11-03 02:34:51,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:51,519 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 546 transitions. [2022-11-03 02:34:51,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:34:51,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:51,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:51,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2022-11-03 02:34:51,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:51,742 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:51,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:51,742 INFO L85 PathProgramCache]: Analyzing trace with hash -260325093, now seen corresponding path program 1 times [2022-11-03 02:34:51,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:51,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [7872046] [2022-11-03 02:34:51,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:51,744 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:51,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:51,746 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:51,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-03 02:34:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:52,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:34:52,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:52,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:52,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:52,623 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:52,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [7872046] [2022-11-03 02:34:52,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [7872046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:52,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:52,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:34:52,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062354552] [2022-11-03 02:34:52,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:52,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:34:52,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:52,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:34:52,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:34:52,625 INFO L87 Difference]: Start difference. First operand 413 states and 546 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:52,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:52,762 INFO L93 Difference]: Finished difference Result 1223 states and 1681 transitions. [2022-11-03 02:34:52,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:34:52,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:34:52,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:52,764 INFO L225 Difference]: With dead ends: 1223 [2022-11-03 02:34:52,765 INFO L226 Difference]: Without dead ends: 918 [2022-11-03 02:34:52,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:34:52,766 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 747 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 1274 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 02:34:52,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 1274 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:34:52,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2022-11-03 02:34:52,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 485. [2022-11-03 02:34:52,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 484 states have (on average 1.3450413223140496) internal successors, (651), 484 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:52,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 651 transitions. [2022-11-03 02:34:52,789 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 651 transitions. Word has length 129 [2022-11-03 02:34:52,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:52,789 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 651 transitions. [2022-11-03 02:34:52,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:52,790 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 651 transitions. [2022-11-03 02:34:52,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:34:52,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:52,791 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:52,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:53,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:53,007 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:53,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:53,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1632132391, now seen corresponding path program 1 times [2022-11-03 02:34:53,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:53,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922961325] [2022-11-03 02:34:53,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:53,009 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:53,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:53,010 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:53,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-03 02:34:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:53,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:34:53,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:53,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:53,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:53,805 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:53,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922961325] [2022-11-03 02:34:53,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922961325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:53,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:53,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:34:53,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232148508] [2022-11-03 02:34:53,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:53,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:34:53,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:53,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:34:53,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:34:53,807 INFO L87 Difference]: Start difference. First operand 485 states and 651 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:53,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:53,921 INFO L93 Difference]: Finished difference Result 1223 states and 1680 transitions. [2022-11-03 02:34:53,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:34:53,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:34:53,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:53,924 INFO L225 Difference]: With dead ends: 1223 [2022-11-03 02:34:53,924 INFO L226 Difference]: Without dead ends: 918 [2022-11-03 02:34:53,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:34:53,925 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 741 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 1273 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 02:34:53,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 1273 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:34:53,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2022-11-03 02:34:53,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 487. [2022-11-03 02:34:53,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 486 states have (on average 1.3436213991769548) internal successors, (653), 486 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 02:34:53,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 653 transitions. [2022-11-03 02:34:53,947 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 653 transitions. Word has length 129 [2022-11-03 02:34:53,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:53,948 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 653 transitions. [2022-11-03 02:34:53,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:53,948 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 653 transitions. [2022-11-03 02:34:53,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:34:53,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:53,950 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:53,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:54,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:54,163 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:54,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:54,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1633475607, now seen corresponding path program 1 times [2022-11-03 02:34:54,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:54,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [839188679] [2022-11-03 02:34:54,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:54,166 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:54,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:54,167 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:54,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-03 02:34:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:54,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:34:54,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:54,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:54,952 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:54,952 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:54,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [839188679] [2022-11-03 02:34:54,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [839188679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:54,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:54,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:34:54,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626481968] [2022-11-03 02:34:54,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:54,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:34:54,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:54,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:34:54,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:34:54,955 INFO L87 Difference]: Start difference. First operand 487 states and 653 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:55,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:55,089 INFO L93 Difference]: Finished difference Result 1223 states and 1679 transitions. [2022-11-03 02:34:55,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:34:55,090 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:34:55,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:55,091 INFO L225 Difference]: With dead ends: 1223 [2022-11-03 02:34:55,091 INFO L226 Difference]: Without dead ends: 918 [2022-11-03 02:34:55,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:34:55,093 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 720 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 1272 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 02:34:55,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 1272 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:34:55,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2022-11-03 02:34:55,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 495. [2022-11-03 02:34:55,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 494 states have (on average 1.3441295546558705) internal successors, (664), 494 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 02:34:55,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 664 transitions. [2022-11-03 02:34:55,115 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 664 transitions. Word has length 129 [2022-11-03 02:34:55,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:55,116 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 664 transitions. [2022-11-03 02:34:55,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:55,116 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 664 transitions. [2022-11-03 02:34:55,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:34:55,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:55,118 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:55,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2022-11-03 02:34:55,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:55,327 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:55,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:55,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1656107861, now seen corresponding path program 1 times [2022-11-03 02:34:55,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:55,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [476717806] [2022-11-03 02:34:55,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:55,330 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:55,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:55,331 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:55,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-03 02:34:55,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:55,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:34:55,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:56,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:56,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:56,182 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:56,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [476717806] [2022-11-03 02:34:56,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [476717806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:56,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:56,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:34:56,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686834661] [2022-11-03 02:34:56,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:56,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:34:56,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:56,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:34:56,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:34:56,185 INFO L87 Difference]: Start difference. First operand 495 states and 664 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:56,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:56,545 INFO L93 Difference]: Finished difference Result 1404 states and 1913 transitions. [2022-11-03 02:34:56,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:34:56,545 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:34:56,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:56,547 INFO L225 Difference]: With dead ends: 1404 [2022-11-03 02:34:56,547 INFO L226 Difference]: Without dead ends: 1099 [2022-11-03 02:34:56,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 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 02:34:56,548 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 1291 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1291 SdHoareTripleChecker+Valid, 2156 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:56,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1291 Valid, 2156 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 49 Unchecked, 0.3s Time] [2022-11-03 02:34:56,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2022-11-03 02:34:56,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 503. [2022-11-03 02:34:56,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 502 states have (on average 1.342629482071713) internal successors, (674), 502 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:56,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 674 transitions. [2022-11-03 02:34:56,571 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 674 transitions. Word has length 129 [2022-11-03 02:34:56,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:56,572 INFO L495 AbstractCegarLoop]: Abstraction has 503 states and 674 transitions. [2022-11-03 02:34:56,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:56,572 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 674 transitions. [2022-11-03 02:34:56,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:34:56,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:56,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:56,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:56,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:56,787 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:56,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:56,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1718147475, now seen corresponding path program 1 times [2022-11-03 02:34:56,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:56,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730240979] [2022-11-03 02:34:56,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:56,789 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:56,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:56,790 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:56,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-03 02:34:57,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:57,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:34:57,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:57,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:57,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:57,831 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:57,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730240979] [2022-11-03 02:34:57,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730240979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:57,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:57,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:34:57,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718165535] [2022-11-03 02:34:57,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:57,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:34:57,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:57,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:34:57,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:34:57,833 INFO L87 Difference]: Start difference. First operand 503 states and 674 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:58,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:58,231 INFO L93 Difference]: Finished difference Result 2012 states and 2712 transitions. [2022-11-03 02:34:58,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 02:34:58,231 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:34:58,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:58,235 INFO L225 Difference]: With dead ends: 2012 [2022-11-03 02:34:58,235 INFO L226 Difference]: Without dead ends: 1707 [2022-11-03 02:34:58,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:34:58,237 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 2895 mSDsluCounter, 1568 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2895 SdHoareTripleChecker+Valid, 2030 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:58,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2895 Valid, 2030 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:34:58,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2022-11-03 02:34:58,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 805. [2022-11-03 02:34:58,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 804 states have (on average 1.3271144278606966) internal successors, (1067), 804 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:58,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1067 transitions. [2022-11-03 02:34:58,267 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1067 transitions. Word has length 129 [2022-11-03 02:34:58,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:58,268 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 1067 transitions. [2022-11-03 02:34:58,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:58,268 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1067 transitions. [2022-11-03 02:34:58,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:34:58,270 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:58,270 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:58,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:58,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:58,492 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:58,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:58,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1937002193, now seen corresponding path program 1 times [2022-11-03 02:34:58,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:58,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593184784] [2022-11-03 02:34:58,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:58,494 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:58,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:58,495 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:58,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-03 02:34:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:59,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:34:59,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:59,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:59,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:59,620 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:59,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593184784] [2022-11-03 02:34:59,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593184784] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:59,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:59,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:34:59,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126426589] [2022-11-03 02:34:59,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:59,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:34:59,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:59,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:34:59,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:34:59,621 INFO L87 Difference]: Start difference. First operand 805 states and 1067 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:59,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:59,828 INFO L93 Difference]: Finished difference Result 1829 states and 2470 transitions. [2022-11-03 02:34:59,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:34:59,829 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:34:59,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:59,831 INFO L225 Difference]: With dead ends: 1829 [2022-11-03 02:34:59,831 INFO L226 Difference]: Without dead ends: 1374 [2022-11-03 02:34:59,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 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 02:34:59,832 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 2124 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2124 SdHoareTripleChecker+Valid, 1411 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:59,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2124 Valid, 1411 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:34:59,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2022-11-03 02:34:59,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 809. [2022-11-03 02:34:59,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 808 states have (on average 1.3267326732673268) internal successors, (1072), 808 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:59,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1072 transitions. [2022-11-03 02:34:59,859 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1072 transitions. Word has length 129 [2022-11-03 02:34:59,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:59,859 INFO L495 AbstractCegarLoop]: Abstraction has 809 states and 1072 transitions. [2022-11-03 02:34:59,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:59,859 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1072 transitions. [2022-11-03 02:34:59,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:34:59,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:59,861 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:59,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2022-11-03 02:35:00,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:00,075 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:00,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:00,075 INFO L85 PathProgramCache]: Analyzing trace with hash -57142513, now seen corresponding path program 1 times [2022-11-03 02:35:00,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:00,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1093747982] [2022-11-03 02:35:00,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:00,077 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:00,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:00,077 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:00,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-03 02:35:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:00,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:35:00,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:01,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:01,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:01,837 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:01,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1093747982] [2022-11-03 02:35:01,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1093747982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:01,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:01,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:35:01,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939230030] [2022-11-03 02:35:01,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:01,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:35:01,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:01,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:35:01,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:35:01,839 INFO L87 Difference]: Start difference. First operand 809 states and 1072 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:35:02,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:02,688 INFO L93 Difference]: Finished difference Result 2186 states and 2940 transitions. [2022-11-03 02:35:02,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 02:35:02,689 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:35:02,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:02,691 INFO L225 Difference]: With dead ends: 2186 [2022-11-03 02:35:02,691 INFO L226 Difference]: Without dead ends: 1727 [2022-11-03 02:35:02,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 123 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 02:35:02,693 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 2903 mSDsluCounter, 1493 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2903 SdHoareTripleChecker+Valid, 1942 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:02,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2903 Valid, 1942 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 02:35:02,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2022-11-03 02:35:02,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 813. [2022-11-03 02:35:02,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 812 states have (on average 1.3263546798029557) internal successors, (1077), 812 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:35:02,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1077 transitions. [2022-11-03 02:35:02,723 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1077 transitions. Word has length 129 [2022-11-03 02:35:02,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:02,723 INFO L495 AbstractCegarLoop]: Abstraction has 813 states and 1077 transitions. [2022-11-03 02:35:02,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:35:02,724 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1077 transitions. [2022-11-03 02:35:02,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:35:02,725 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:02,725 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:02,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2022-11-03 02:35:02,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:02,939 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:02,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:02,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1068259763, now seen corresponding path program 1 times [2022-11-03 02:35:02,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:02,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [89621863] [2022-11-03 02:35:02,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:02,941 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:02,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:02,942 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:02,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-03 02:35:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:03,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:35:03,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:03,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:03,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:03,737 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:03,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [89621863] [2022-11-03 02:35:03,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [89621863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:03,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:03,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:35:03,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74281128] [2022-11-03 02:35:03,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:03,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:35:03,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:03,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:35:03,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:35:03,752 INFO L87 Difference]: Start difference. First operand 813 states and 1077 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:35:03,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:03,874 INFO L93 Difference]: Finished difference Result 1873 states and 2528 transitions. [2022-11-03 02:35:03,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:35:03,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:35:03,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:03,879 INFO L225 Difference]: With dead ends: 1873 [2022-11-03 02:35:03,879 INFO L226 Difference]: Without dead ends: 1410 [2022-11-03 02:35:03,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:35:03,880 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 669 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 1271 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 02:35:03,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 1271 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:35:03,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2022-11-03 02:35:03,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 849. [2022-11-03 02:35:03,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 848 states have (on average 1.3290094339622642) internal successors, (1127), 848 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:35:03,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1127 transitions. [2022-11-03 02:35:03,909 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1127 transitions. Word has length 129 [2022-11-03 02:35:03,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:03,909 INFO L495 AbstractCegarLoop]: Abstraction has 849 states and 1127 transitions. [2022-11-03 02:35:03,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:35:03,910 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1127 transitions. [2022-11-03 02:35:03,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:35:03,911 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:03,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:03,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2022-11-03 02:35:04,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:04,126 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:04,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:04,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1461286773, now seen corresponding path program 1 times [2022-11-03 02:35:04,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:04,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956918950] [2022-11-03 02:35:04,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:04,128 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:04,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:04,130 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:04,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-03 02:35:04,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:04,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:35:04,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:04,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:04,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:04,970 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:04,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956918950] [2022-11-03 02:35:04,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956918950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:04,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:04,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:35:04,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728045367] [2022-11-03 02:35:04,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:04,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:35:04,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:04,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:35:04,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:35:04,973 INFO L87 Difference]: Start difference. First operand 849 states and 1127 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:35:05,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:05,427 INFO L93 Difference]: Finished difference Result 2211 states and 2968 transitions. [2022-11-03 02:35:05,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:35:05,428 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:35:05,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:05,431 INFO L225 Difference]: With dead ends: 2211 [2022-11-03 02:35:05,431 INFO L226 Difference]: Without dead ends: 1748 [2022-11-03 02:35:05,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 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 02:35:05,433 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 953 mSDsluCounter, 2361 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 2846 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:05,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [953 Valid, 2846 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 50 Unchecked, 0.4s Time] [2022-11-03 02:35:05,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2022-11-03 02:35:05,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 881. [2022-11-03 02:35:05,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 880 states have (on average 1.3295454545454546) internal successors, (1170), 880 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:35:05,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1170 transitions. [2022-11-03 02:35:05,472 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1170 transitions. Word has length 129 [2022-11-03 02:35:05,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:05,473 INFO L495 AbstractCegarLoop]: Abstraction has 881 states and 1170 transitions. [2022-11-03 02:35:05,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:35:05,473 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1170 transitions. [2022-11-03 02:35:05,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 02:35:05,475 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:05,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:05,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:05,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:05,691 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:05,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:05,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1404028471, now seen corresponding path program 1 times [2022-11-03 02:35:05,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:05,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1594588568] [2022-11-03 02:35:05,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:05,693 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:05,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:05,694 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:05,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-03 02:35:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:06,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 02:35:06,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:06,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:06,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:06,883 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:06,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1594588568] [2022-11-03 02:35:06,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1594588568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:06,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:06,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:35:06,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506774859] [2022-11-03 02:35:06,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:06,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:35:06,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:06,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:35:06,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:35:06,885 INFO L87 Difference]: Start difference. First operand 881 states and 1170 transitions. Second operand has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:35:07,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:07,372 INFO L93 Difference]: Finished difference Result 1351 states and 1808 transitions. [2022-11-03 02:35:07,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:35:07,373 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-11-03 02:35:07,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:07,374 INFO L225 Difference]: With dead ends: 1351 [2022-11-03 02:35:07,374 INFO L226 Difference]: Without dead ends: 1349 [2022-11-03 02:35:07,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:35:07,375 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 828 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:07,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 1405 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:35:07,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2022-11-03 02:35:07,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 889. [2022-11-03 02:35:07,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 888 states have (on average 1.329954954954955) internal successors, (1181), 888 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:35:07,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1181 transitions. [2022-11-03 02:35:07,396 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1181 transitions. Word has length 129 [2022-11-03 02:35:07,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:07,396 INFO L495 AbstractCegarLoop]: Abstraction has 889 states and 1181 transitions. [2022-11-03 02:35:07,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:35:07,396 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1181 transitions. [2022-11-03 02:35:07,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-03 02:35:07,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:07,400 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:07,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2022-11-03 02:35:07,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:07,612 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:07,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:07,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1658274425, now seen corresponding path program 1 times [2022-11-03 02:35:07,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:07,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122048331] [2022-11-03 02:35:07,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:07,615 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:07,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:07,616 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:07,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-03 02:35:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:08,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:35:08,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:09,036 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:09,036 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:09,036 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:09,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [122048331] [2022-11-03 02:35:09,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [122048331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:09,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:09,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:35:09,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822029013] [2022-11-03 02:35:09,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:09,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:35:09,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:09,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:35:09,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:35:09,038 INFO L87 Difference]: Start difference. First operand 889 states and 1181 transitions. Second operand has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:35:09,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:09,160 INFO L93 Difference]: Finished difference Result 1903 states and 2568 transitions. [2022-11-03 02:35:09,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:35:09,160 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2022-11-03 02:35:09,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:09,162 INFO L225 Difference]: With dead ends: 1903 [2022-11-03 02:35:09,162 INFO L226 Difference]: Without dead ends: 1440 [2022-11-03 02:35:09,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:35:09,164 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 640 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 1268 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 02:35:09,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 1268 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:35:09,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2022-11-03 02:35:09,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 891. [2022-11-03 02:35:09,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 890 states have (on average 1.3292134831460674) internal successors, (1183), 890 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:35:09,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1183 transitions. [2022-11-03 02:35:09,187 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1183 transitions. Word has length 344 [2022-11-03 02:35:09,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:09,188 INFO L495 AbstractCegarLoop]: Abstraction has 891 states and 1183 transitions. [2022-11-03 02:35:09,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:35:09,188 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1183 transitions. [2022-11-03 02:35:09,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-03 02:35:09,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:09,191 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:09,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (46)] Ended with exit code 0 [2022-11-03 02:35:09,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:09,417 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:09,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:09,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1660108791, now seen corresponding path program 1 times [2022-11-03 02:35:09,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:09,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1663316830] [2022-11-03 02:35:09,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:09,419 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:09,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:09,421 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:09,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-03 02:35:10,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:10,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:35:10,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:10,795 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:10,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:10,796 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:10,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1663316830] [2022-11-03 02:35:10,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1663316830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:10,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:10,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:35:10,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511913859] [2022-11-03 02:35:10,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:10,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:35:10,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:10,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:35:10,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:35:10,798 INFO L87 Difference]: Start difference. First operand 891 states and 1183 transitions. Second operand has 7 states, 7 states have (on average 49.142857142857146) internal successors, (344), 7 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:35:11,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:11,279 INFO L93 Difference]: Finished difference Result 2219 states and 2977 transitions. [2022-11-03 02:35:11,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:35:11,280 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 49.142857142857146) internal successors, (344), 7 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2022-11-03 02:35:11,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:11,283 INFO L225 Difference]: With dead ends: 2219 [2022-11-03 02:35:11,283 INFO L226 Difference]: Without dead ends: 1756 [2022-11-03 02:35:11,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 338 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 02:35:11,285 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 933 mSDsluCounter, 2385 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 2883 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:11,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 2883 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 49 Unchecked, 0.4s Time] [2022-11-03 02:35:11,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2022-11-03 02:35:11,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 901. [2022-11-03 02:35:11,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 900 states have (on average 1.3277777777777777) internal successors, (1195), 900 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:35:11,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1195 transitions. [2022-11-03 02:35:11,310 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1195 transitions. Word has length 344 [2022-11-03 02:35:11,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:11,310 INFO L495 AbstractCegarLoop]: Abstraction has 901 states and 1195 transitions. [2022-11-03 02:35:11,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 49.142857142857146) internal successors, (344), 7 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:35:11,311 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1195 transitions. [2022-11-03 02:35:11,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-03 02:35:11,314 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:11,315 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:11,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (47)] Ended with exit code 0 [2022-11-03 02:35:11,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:11,539 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:11,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:11,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1530244213, now seen corresponding path program 1 times [2022-11-03 02:35:11,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:11,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [699218003] [2022-11-03 02:35:11,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:11,542 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:11,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:11,543 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:11,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-03 02:35:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:12,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 208 conjunts are in the unsatisfiable core [2022-11-03 02:35:12,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:28,711 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:28,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:28,712 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:28,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [699218003] [2022-11-03 02:35:28,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [699218003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:28,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:28,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 02:35:28,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334493104] [2022-11-03 02:35:28,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:28,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 02:35:28,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:28,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 02:35:28,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:35:28,714 INFO L87 Difference]: Start difference. First operand 901 states and 1195 transitions. Second operand has 14 states, 14 states have (on average 24.571428571428573) internal successors, (344), 14 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:35:31,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:31,095 INFO L93 Difference]: Finished difference Result 2994 states and 3997 transitions. [2022-11-03 02:35:31,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 02:35:31,097 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 24.571428571428573) internal successors, (344), 14 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2022-11-03 02:35:31,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:31,103 INFO L225 Difference]: With dead ends: 2994 [2022-11-03 02:35:31,103 INFO L226 Difference]: Without dead ends: 2531 [2022-11-03 02:35:31,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2022-11-03 02:35:31,105 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 2907 mSDsluCounter, 5256 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2907 SdHoareTripleChecker+Valid, 5681 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 124 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:31,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2907 Valid, 5681 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 243 Invalid, 0 Unknown, 124 Unchecked, 0.7s Time] [2022-11-03 02:35:31,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2531 states. [2022-11-03 02:35:31,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2531 to 997. [2022-11-03 02:35:31,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.322289156626506) internal successors, (1317), 996 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:35:31,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1317 transitions. [2022-11-03 02:35:31,146 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1317 transitions. Word has length 344 [2022-11-03 02:35:31,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:31,146 INFO L495 AbstractCegarLoop]: Abstraction has 997 states and 1317 transitions. [2022-11-03 02:35:31,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.571428571428573) internal successors, (344), 14 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:35:31,147 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1317 transitions. [2022-11-03 02:35:31,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-03 02:35:31,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:31,150 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:31,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:31,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:31,367 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:31,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:31,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1628778637, now seen corresponding path program 1 times [2022-11-03 02:35:31,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:31,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [406299449] [2022-11-03 02:35:31,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:31,370 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:31,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:31,371 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:31,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-03 02:35:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:32,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 221 conjunts are in the unsatisfiable core [2022-11-03 02:35:32,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:49,895 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:49,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:49,895 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:49,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [406299449] [2022-11-03 02:35:49,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [406299449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:49,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:49,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 02:35:49,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692908475] [2022-11-03 02:35:49,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:49,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 02:35:49,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:49,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 02:35:49,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:35:49,898 INFO L87 Difference]: Start difference. First operand 997 states and 1317 transitions. Second operand has 14 states, 14 states have (on average 24.571428571428573) internal successors, (344), 14 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:35:52,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:52,790 INFO L93 Difference]: Finished difference Result 3272 states and 4395 transitions. [2022-11-03 02:35:52,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 02:35:52,792 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 24.571428571428573) internal successors, (344), 14 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2022-11-03 02:35:52,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:52,796 INFO L225 Difference]: With dead ends: 3272 [2022-11-03 02:35:52,796 INFO L226 Difference]: Without dead ends: 2809 [2022-11-03 02:35:52,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:35:52,798 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 3400 mSDsluCounter, 6007 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3400 SdHoareTripleChecker+Valid, 6495 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 204 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:52,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3400 Valid, 6495 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 400 Invalid, 0 Unknown, 204 Unchecked, 1.2s Time] [2022-11-03 02:35:52,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2809 states. [2022-11-03 02:35:52,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2809 to 999. [2022-11-03 02:35:52,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 998 states have (on average 1.3216432865731462) internal successors, (1319), 998 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:35:52,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1319 transitions. [2022-11-03 02:35:52,832 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1319 transitions. Word has length 344 [2022-11-03 02:35:52,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:52,833 INFO L495 AbstractCegarLoop]: Abstraction has 999 states and 1319 transitions. [2022-11-03 02:35:52,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.571428571428573) internal successors, (344), 14 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:35:52,833 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1319 transitions. [2022-11-03 02:35:52,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-03 02:35:52,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:52,837 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:52,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (49)] Ended with exit code 0 [2022-11-03 02:35:53,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:53,051 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:53,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:53,051 INFO L85 PathProgramCache]: Analyzing trace with hash 353854991, now seen corresponding path program 1 times [2022-11-03 02:35:53,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:53,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1348786638] [2022-11-03 02:35:53,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:53,053 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:53,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:53,054 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:53,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-03 02:35:53,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:54,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-03 02:35:54,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:58,320 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:58,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:58,320 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:58,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1348786638] [2022-11-03 02:35:58,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1348786638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:58,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:58,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-03 02:35:58,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605132862] [2022-11-03 02:35:58,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:58,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-03 02:35:58,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:58,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-03 02:35:58,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:35:58,323 INFO L87 Difference]: Start difference. First operand 999 states and 1319 transitions. Second operand has 24 states, 24 states have (on average 14.333333333333334) internal successors, (344), 24 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:35:58,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:58,779 INFO L93 Difference]: Finished difference Result 2457 states and 3270 transitions. [2022-11-03 02:35:58,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-03 02:35:58,780 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 14.333333333333334) internal successors, (344), 24 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2022-11-03 02:35:58,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:58,782 INFO L225 Difference]: With dead ends: 2457 [2022-11-03 02:35:58,783 INFO L226 Difference]: Without dead ends: 1994 [2022-11-03 02:35:58,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=56, Invalid=594, Unknown=0, NotChecked=0, Total=650 [2022-11-03 02:35:58,784 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 909 mSDsluCounter, 8463 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 8889 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 712 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:58,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 8889 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 712 Unchecked, 0.3s Time] [2022-11-03 02:35:58,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2022-11-03 02:35:58,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1223. [2022-11-03 02:35:58,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 1222 states have (on average 1.3183306055646482) internal successors, (1611), 1222 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:35:58,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1611 transitions. [2022-11-03 02:35:58,832 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1611 transitions. Word has length 344 [2022-11-03 02:35:58,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:58,832 INFO L495 AbstractCegarLoop]: Abstraction has 1223 states and 1611 transitions. [2022-11-03 02:35:58,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 14.333333333333334) internal successors, (344), 24 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:35:58,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1611 transitions. [2022-11-03 02:35:58,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-03 02:35:58,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:58,836 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:58,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:59,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:59,059 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:59,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:59,060 INFO L85 PathProgramCache]: Analyzing trace with hash 637840529, now seen corresponding path program 1 times [2022-11-03 02:35:59,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:59,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1310871653] [2022-11-03 02:35:59,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:59,062 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:59,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:59,063 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:59,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-03 02:35:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:36:00,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 231 conjunts are in the unsatisfiable core [2022-11-03 02:36:00,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:24,914 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:36:24,914 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:36:24,915 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:36:24,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1310871653] [2022-11-03 02:36:24,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1310871653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:36:24,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:36:24,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-03 02:36:24,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938085778] [2022-11-03 02:36:24,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:36:24,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-03 02:36:24,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:36:24,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-03 02:36:24,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=701, Unknown=0, NotChecked=0, Total=756 [2022-11-03 02:36:24,918 INFO L87 Difference]: Start difference. First operand 1223 states and 1611 transitions. Second operand has 28 states, 28 states have (on average 12.285714285714286) internal successors, (344), 28 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:36:25,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:36:25,397 INFO L93 Difference]: Finished difference Result 2504 states and 3370 transitions. [2022-11-03 02:36:25,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-03 02:36:25,399 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 12.285714285714286) internal successors, (344), 28 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2022-11-03 02:36:25,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:36:25,404 INFO L225 Difference]: With dead ends: 2504 [2022-11-03 02:36:25,404 INFO L226 Difference]: Without dead ends: 2041 [2022-11-03 02:36:25,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=70, Invalid=860, Unknown=0, NotChecked=0, Total=930 [2022-11-03 02:36:25,407 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 998 mSDsluCounter, 8080 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 8408 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 742 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:36:25,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [998 Valid, 8408 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 742 Unchecked, 0.2s Time] [2022-11-03 02:36:25,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2041 states. [2022-11-03 02:36:25,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2041 to 1327. [2022-11-03 02:36:25,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1327 states, 1326 states have (on average 1.3197586726998491) internal successors, (1750), 1326 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:36:25,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1750 transitions. [2022-11-03 02:36:25,444 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1750 transitions. Word has length 344 [2022-11-03 02:36:25,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:36:25,444 INFO L495 AbstractCegarLoop]: Abstraction has 1327 states and 1750 transitions. [2022-11-03 02:36:25,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 12.285714285714286) internal successors, (344), 28 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:36:25,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1750 transitions. [2022-11-03 02:36:25,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-03 02:36:25,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:25,448 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:36:25,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:25,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:36:25,671 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:36:25,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:25,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1087001709, now seen corresponding path program 1 times [2022-11-03 02:36:25,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:36:25,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [732295495] [2022-11-03 02:36:25,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:36:25,675 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:36:25,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:36:25,675 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:36:25,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-03 02:36:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:36:26,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:36:26,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:26,912 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:36:26,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:36:26,912 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:36:26,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [732295495] [2022-11-03 02:36:26,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [732295495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:36:26,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:36:26,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:36:26,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932747878] [2022-11-03 02:36:26,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:36:26,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:36:26,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:36:26,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:36:26,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:36:26,914 INFO L87 Difference]: Start difference. First operand 1327 states and 1750 transitions. Second operand has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:36:27,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:36:27,114 INFO L93 Difference]: Finished difference Result 1815 states and 2415 transitions. [2022-11-03 02:36:27,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:36:27,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2022-11-03 02:36:27,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:36:27,117 INFO L225 Difference]: With dead ends: 1815 [2022-11-03 02:36:27,117 INFO L226 Difference]: Without dead ends: 1352 [2022-11-03 02:36:27,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:36:27,118 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 491 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:36:27,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 703 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:36:27,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2022-11-03 02:36:27,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1327. [2022-11-03 02:36:27,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1327 states, 1326 states have (on average 1.3190045248868778) internal successors, (1749), 1326 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:36:27,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1749 transitions. [2022-11-03 02:36:27,147 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1749 transitions. Word has length 344 [2022-11-03 02:36:27,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:36:27,147 INFO L495 AbstractCegarLoop]: Abstraction has 1327 states and 1749 transitions. [2022-11-03 02:36:27,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:36:27,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1749 transitions. [2022-11-03 02:36:27,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-03 02:36:27,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:27,151 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:36:27,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (52)] Ended with exit code 0 [2022-11-03 02:36:27,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:36:27,365 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:36:27,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:27,366 INFO L85 PathProgramCache]: Analyzing trace with hash -963720043, now seen corresponding path program 1 times [2022-11-03 02:36:27,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:36:27,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [904862714] [2022-11-03 02:36:27,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:36:27,369 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:36:27,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:36:27,370 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:36:27,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-03 02:36:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:36:28,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:36:28,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:28,568 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:36:28,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:36:28,568 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:36:28,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [904862714] [2022-11-03 02:36:28,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [904862714] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:36:28,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:36:28,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:36:28,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98444901] [2022-11-03 02:36:28,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:36:28,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:36:28,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:36:28,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:36:28,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:36:28,570 INFO L87 Difference]: Start difference. First operand 1327 states and 1749 transitions. Second operand has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:36:28,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:36:28,772 INFO L93 Difference]: Finished difference Result 1819 states and 2418 transitions. [2022-11-03 02:36:28,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:36:28,773 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2022-11-03 02:36:28,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:36:28,774 INFO L225 Difference]: With dead ends: 1819 [2022-11-03 02:36:28,774 INFO L226 Difference]: Without dead ends: 1356 [2022-11-03 02:36:28,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:36:28,776 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 485 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:36:28,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 710 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:36:28,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2022-11-03 02:36:28,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 1327. [2022-11-03 02:36:28,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1327 states, 1326 states have (on average 1.3182503770739065) internal successors, (1748), 1326 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:36:28,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1748 transitions. [2022-11-03 02:36:28,793 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1748 transitions. Word has length 344 [2022-11-03 02:36:28,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:36:28,794 INFO L495 AbstractCegarLoop]: Abstraction has 1327 states and 1748 transitions. [2022-11-03 02:36:28,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:36:28,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1748 transitions. [2022-11-03 02:36:28,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-03 02:36:28,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:28,797 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:36:28,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:29,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:36:29,018 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:36:29,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:29,018 INFO L85 PathProgramCache]: Analyzing trace with hash -971719017, now seen corresponding path program 1 times [2022-11-03 02:36:29,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:36:29,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [713798907] [2022-11-03 02:36:29,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:36:29,020 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:36:29,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:36:29,021 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:36:29,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-03 02:36:29,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:36:29,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:36:29,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:30,236 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:36:30,236 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:36:30,236 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:36:30,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [713798907] [2022-11-03 02:36:30,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [713798907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:36:30,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:36:30,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:36:30,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73058931] [2022-11-03 02:36:30,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:36:30,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:36:30,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:36:30,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:36:30,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:36:30,239 INFO L87 Difference]: Start difference. First operand 1327 states and 1748 transitions. Second operand has 7 states, 7 states have (on average 49.142857142857146) internal successors, (344), 7 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:36:30,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:36:30,737 INFO L93 Difference]: Finished difference Result 2687 states and 3579 transitions. [2022-11-03 02:36:30,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:36:30,737 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 49.142857142857146) internal successors, (344), 7 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2022-11-03 02:36:30,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:36:30,739 INFO L225 Difference]: With dead ends: 2687 [2022-11-03 02:36:30,739 INFO L226 Difference]: Without dead ends: 2224 [2022-11-03 02:36:30,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 338 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 02:36:30,740 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 1120 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 2152 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:36:30,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1120 Valid, 2152 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 30 Unchecked, 0.4s Time] [2022-11-03 02:36:30,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2224 states. [2022-11-03 02:36:30,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2224 to 1399. [2022-11-03 02:36:30,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1399 states, 1398 states have (on average 1.3204577968526467) internal successors, (1846), 1398 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:36:30,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 1846 transitions. [2022-11-03 02:36:30,770 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 1846 transitions. Word has length 344 [2022-11-03 02:36:30,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:36:30,770 INFO L495 AbstractCegarLoop]: Abstraction has 1399 states and 1846 transitions. [2022-11-03 02:36:30,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 49.142857142857146) internal successors, (344), 7 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:36:30,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 1846 transitions. [2022-11-03 02:36:30,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-03 02:36:30,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:30,774 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:36:30,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:30,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:36:30,991 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:36:30,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:30,992 INFO L85 PathProgramCache]: Analyzing trace with hash 785908121, now seen corresponding path program 1 times [2022-11-03 02:36:30,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:36:30,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [231376717] [2022-11-03 02:36:30,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:36:30,995 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:36:30,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:36:30,996 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:36:31,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-03 02:36:31,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:36:32,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:36:32,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:32,308 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:36:32,308 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:36:32,308 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:36:32,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [231376717] [2022-11-03 02:36:32,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [231376717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:36:32,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:36:32,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:36:32,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927792785] [2022-11-03 02:36:32,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:36:32,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:36:32,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:36:32,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:36:32,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:36:32,311 INFO L87 Difference]: Start difference. First operand 1399 states and 1846 transitions. Second operand has 7 states, 7 states have (on average 49.142857142857146) internal successors, (344), 7 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:36:32,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:36:32,730 INFO L93 Difference]: Finished difference Result 2800 states and 3738 transitions. [2022-11-03 02:36:32,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:36:32,730 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 49.142857142857146) internal successors, (344), 7 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2022-11-03 02:36:32,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:36:32,732 INFO L225 Difference]: With dead ends: 2800 [2022-11-03 02:36:32,732 INFO L226 Difference]: Without dead ends: 2337 [2022-11-03 02:36:32,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 338 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 02:36:32,734 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 960 mSDsluCounter, 2369 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 2904 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:36:32,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [960 Valid, 2904 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 64 Unchecked, 0.4s Time] [2022-11-03 02:36:32,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2337 states. [2022-11-03 02:36:32,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2337 to 1449. [2022-11-03 02:36:32,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1448 states have (on average 1.3225138121546962) internal successors, (1915), 1448 states have internal predecessors, (1915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:36:32,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1915 transitions. [2022-11-03 02:36:32,763 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1915 transitions. Word has length 344 [2022-11-03 02:36:32,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:36:32,763 INFO L495 AbstractCegarLoop]: Abstraction has 1449 states and 1915 transitions. [2022-11-03 02:36:32,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 49.142857142857146) internal successors, (344), 7 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:36:32,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1915 transitions. [2022-11-03 02:36:32,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-03 02:36:32,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:32,766 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:36:32,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:32,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:36:32,979 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:36:32,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:32,980 INFO L85 PathProgramCache]: Analyzing trace with hash -30139109, now seen corresponding path program 1 times [2022-11-03 02:36:32,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:36:32,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1490475911] [2022-11-03 02:36:32,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:36:32,982 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:36:32,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:36:32,983 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:36:32,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-03 02:36:33,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:36:33,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:36:33,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:34,464 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:36:34,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:36:34,465 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:36:34,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1490475911] [2022-11-03 02:36:34,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1490475911] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:36:34,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:36:34,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:36:34,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374597069] [2022-11-03 02:36:34,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:36:34,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:36:34,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:36:34,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:36:34,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:36:34,468 INFO L87 Difference]: Start difference. First operand 1449 states and 1915 transitions. Second operand has 7 states, 7 states have (on average 49.142857142857146) internal successors, (344), 7 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:36:34,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:36:34,662 INFO L93 Difference]: Finished difference Result 1968 states and 2614 transitions. [2022-11-03 02:36:34,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:36:34,663 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 49.142857142857146) internal successors, (344), 7 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2022-11-03 02:36:34,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:36:34,664 INFO L225 Difference]: With dead ends: 1968 [2022-11-03 02:36:34,664 INFO L226 Difference]: Without dead ends: 1505 [2022-11-03 02:36:34,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 338 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 02:36:34,667 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 101 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:36:34,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 1687 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 32 Unchecked, 0.2s Time] [2022-11-03 02:36:34,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2022-11-03 02:36:34,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1505. [2022-11-03 02:36:34,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1505 states, 1504 states have (on average 1.3211436170212767) internal successors, (1987), 1504 states have internal predecessors, (1987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:36:34,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 1987 transitions. [2022-11-03 02:36:34,695 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 1987 transitions. Word has length 344 [2022-11-03 02:36:34,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:36:34,696 INFO L495 AbstractCegarLoop]: Abstraction has 1505 states and 1987 transitions. [2022-11-03 02:36:34,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 49.142857142857146) internal successors, (344), 7 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:36:34,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 1987 transitions. [2022-11-03 02:36:34,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-03 02:36:34,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:34,701 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, 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 02:36:34,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:34,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:36:34,923 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:36:34,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:34,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1629288167, now seen corresponding path program 1 times [2022-11-03 02:36:34,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:36:34,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24143611] [2022-11-03 02:36:34,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:36:34,925 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:36:34,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:36:34,926 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:36:34,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-03 02:36:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:36:35,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:36:35,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:36,077 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:36:36,077 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:36:36,078 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:36:36,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24143611] [2022-11-03 02:36:36,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [24143611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:36:36,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:36:36,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:36:36,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474413752] [2022-11-03 02:36:36,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:36:36,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:36:36,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:36:36,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:36:36,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:36:36,080 INFO L87 Difference]: Start difference. First operand 1505 states and 1987 transitions. Second operand has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:36:36,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:36:36,319 INFO L93 Difference]: Finished difference Result 1987 states and 2639 transitions. [2022-11-03 02:36:36,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:36:36,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2022-11-03 02:36:36,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:36:36,321 INFO L225 Difference]: With dead ends: 1987 [2022-11-03 02:36:36,321 INFO L226 Difference]: Without dead ends: 1524 [2022-11-03 02:36:36,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:36:36,322 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 471 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:36:36,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 737 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:36:36,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2022-11-03 02:36:36,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1505. [2022-11-03 02:36:36,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1505 states, 1504 states have (on average 1.3204787234042554) internal successors, (1986), 1504 states have internal predecessors, (1986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:36:36,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 1986 transitions. [2022-11-03 02:36:36,355 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 1986 transitions. Word has length 344 [2022-11-03 02:36:36,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:36:36,356 INFO L495 AbstractCegarLoop]: Abstraction has 1505 states and 1986 transitions. [2022-11-03 02:36:36,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:36:36,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 1986 transitions. [2022-11-03 02:36:36,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-03 02:36:36,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:36,360 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:36:36,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:36,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:36:36,575 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:36:36,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:36,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1101894117, now seen corresponding path program 1 times [2022-11-03 02:36:36,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:36:36,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [799397884] [2022-11-03 02:36:36,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:36:36,578 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:36:36,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:36:36,579 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:36:36,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-03 02:36:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:36:37,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:36:37,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:37,919 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:36:37,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:36:37,920 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:36:37,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [799397884] [2022-11-03 02:36:37,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [799397884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:36:37,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:36:37,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:36:37,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901175875] [2022-11-03 02:36:37,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:36:37,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:36:37,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:36:37,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:36:37,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:36:37,922 INFO L87 Difference]: Start difference. First operand 1505 states and 1986 transitions. Second operand has 7 states, 7 states have (on average 49.142857142857146) internal successors, (344), 7 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:36:38,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:36:38,332 INFO L93 Difference]: Finished difference Result 2858 states and 3807 transitions. [2022-11-03 02:36:38,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:36:38,332 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 49.142857142857146) internal successors, (344), 7 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2022-11-03 02:36:38,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:36:38,334 INFO L225 Difference]: With dead ends: 2858 [2022-11-03 02:36:38,334 INFO L226 Difference]: Without dead ends: 2395 [2022-11-03 02:36:38,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 338 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 02:36:38,335 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 942 mSDsluCounter, 2153 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 2701 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:36:38,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 2701 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 38 Unchecked, 0.4s Time] [2022-11-03 02:36:38,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2395 states. [2022-11-03 02:36:38,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2395 to 1517. [2022-11-03 02:36:38,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1517 states, 1516 states have (on average 1.3199208443271768) internal successors, (2001), 1516 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:36:38,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 2001 transitions. [2022-11-03 02:36:38,372 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 2001 transitions. Word has length 344 [2022-11-03 02:36:38,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:36:38,372 INFO L495 AbstractCegarLoop]: Abstraction has 1517 states and 2001 transitions. [2022-11-03 02:36:38,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 49.142857142857146) internal successors, (344), 7 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:36:38,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 2001 transitions. [2022-11-03 02:36:38,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-03 02:36:38,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:38,376 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:36:38,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:38,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:36:38,599 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:36:38,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:38,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1011833827, now seen corresponding path program 1 times [2022-11-03 02:36:38,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:36:38,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776284312] [2022-11-03 02:36:38,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:36:38,601 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:36:38,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:36:38,602 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:36:38,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2022-11-03 02:36:39,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:36:39,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:36:39,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:40,178 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:36:40,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:36:40,178 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:36:40,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776284312] [2022-11-03 02:36:40,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776284312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:36:40,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:36:40,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:36:40,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890987679] [2022-11-03 02:36:40,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:36:40,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:36:40,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:36:40,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:36:40,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:36:40,180 INFO L87 Difference]: Start difference. First operand 1517 states and 2001 transitions. Second operand has 6 states, 6 states have (on average 57.333333333333336) internal successors, (344), 6 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:36:40,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:36:40,743 INFO L93 Difference]: Finished difference Result 2478 states and 3299 transitions. [2022-11-03 02:36:40,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:36:40,744 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 57.333333333333336) internal successors, (344), 6 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2022-11-03 02:36:40,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:36:40,746 INFO L225 Difference]: With dead ends: 2478 [2022-11-03 02:36:40,746 INFO L226 Difference]: Without dead ends: 2015 [2022-11-03 02:36:40,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 339 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 02:36:40,747 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 1140 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 1873 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:36:40,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1140 Valid, 1873 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:36:40,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2015 states. [2022-11-03 02:36:40,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2015 to 1519. [2022-11-03 02:36:40,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 1518 states have (on average 1.3194993412384717) internal successors, (2003), 1518 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:36:40,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 2003 transitions. [2022-11-03 02:36:40,769 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 2003 transitions. Word has length 344 [2022-11-03 02:36:40,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:36:40,769 INFO L495 AbstractCegarLoop]: Abstraction has 1519 states and 2003 transitions. [2022-11-03 02:36:40,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 57.333333333333336) internal successors, (344), 6 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:36:40,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 2003 transitions. [2022-11-03 02:36:40,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-03 02:36:40,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:40,772 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:36:40,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:40,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:36:40,973 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:36:40,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:40,973 INFO L85 PathProgramCache]: Analyzing trace with hash -667005665, now seen corresponding path program 1 times [2022-11-03 02:36:40,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:36:40,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [191749754] [2022-11-03 02:36:40,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:36:40,975 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:36:40,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:36:40,978 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:36:40,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2022-11-03 02:36:41,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:36:41,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-03 02:36:41,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:45,791 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:36:45,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:36:45,791 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:36:45,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [191749754] [2022-11-03 02:36:45,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [191749754] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:36:45,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:36:45,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-03 02:36:45,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860186939] [2022-11-03 02:36:45,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:36:45,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-03 02:36:45,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:36:45,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-03 02:36:45,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:36:45,796 INFO L87 Difference]: Start difference. First operand 1519 states and 2003 transitions. Second operand has 24 states, 24 states have (on average 14.333333333333334) internal successors, (344), 24 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:36:46,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:36:46,317 INFO L93 Difference]: Finished difference Result 2834 states and 3749 transitions. [2022-11-03 02:36:46,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-03 02:36:46,318 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 14.333333333333334) internal successors, (344), 24 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2022-11-03 02:36:46,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:36:46,319 INFO L225 Difference]: With dead ends: 2834 [2022-11-03 02:36:46,319 INFO L226 Difference]: Without dead ends: 2369 [2022-11-03 02:36:46,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=56, Invalid=594, Unknown=0, NotChecked=0, Total=650 [2022-11-03 02:36:46,320 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 682 mSDsluCounter, 8594 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 9017 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 672 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:36:46,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 9017 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 134 Invalid, 0 Unknown, 672 Unchecked, 0.4s Time] [2022-11-03 02:36:46,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2369 states. [2022-11-03 02:36:46,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2369 to 1681. [2022-11-03 02:36:46,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1681 states, 1680 states have (on average 1.3196428571428571) internal successors, (2217), 1680 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:36:46,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1681 states to 1681 states and 2217 transitions. [2022-11-03 02:36:46,342 INFO L78 Accepts]: Start accepts. Automaton has 1681 states and 2217 transitions. Word has length 344 [2022-11-03 02:36:46,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:36:46,342 INFO L495 AbstractCegarLoop]: Abstraction has 1681 states and 2217 transitions. [2022-11-03 02:36:46,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 14.333333333333334) internal successors, (344), 24 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:36:46,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1681 states and 2217 transitions. [2022-11-03 02:36:46,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-03 02:36:46,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:46,345 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:36:46,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:46,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:36:46,546 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:36:46,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:46,546 INFO L85 PathProgramCache]: Analyzing trace with hash -2072197343, now seen corresponding path program 1 times [2022-11-03 02:36:46,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:36:46,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063432684] [2022-11-03 02:36:46,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:36:46,549 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:36:46,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:36:46,550 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:36:46,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2022-11-03 02:36:47,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:36:47,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 231 conjunts are in the unsatisfiable core [2022-11-03 02:36:47,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:37:12,712 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:12,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:37:12,713 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:37:12,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1063432684] [2022-11-03 02:37:12,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1063432684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:37:12,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:37:12,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-03 02:37:12,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952880475] [2022-11-03 02:37:12,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:37:12,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-03 02:37:12,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:37:12,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-03 02:37:12,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=701, Unknown=0, NotChecked=0, Total=756 [2022-11-03 02:37:12,715 INFO L87 Difference]: Start difference. First operand 1681 states and 2217 transitions. Second operand has 28 states, 28 states have (on average 12.285714285714286) internal successors, (344), 28 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:13,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:13,048 INFO L93 Difference]: Finished difference Result 3002 states and 3988 transitions. [2022-11-03 02:37:13,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-03 02:37:13,048 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 12.285714285714286) internal successors, (344), 28 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2022-11-03 02:37:13,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:13,051 INFO L225 Difference]: With dead ends: 3002 [2022-11-03 02:37:13,051 INFO L226 Difference]: Without dead ends: 2537 [2022-11-03 02:37:13,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=70, Invalid=860, Unknown=0, NotChecked=0, Total=930 [2022-11-03 02:37:13,053 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 722 mSDsluCounter, 8266 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 8591 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1269 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:13,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 8591 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 1269 Unchecked, 0.1s Time] [2022-11-03 02:37:13,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2537 states. [2022-11-03 02:37:13,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2537 to 1841. [2022-11-03 02:37:13,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 1.3190217391304349) internal successors, (2427), 1840 states have internal predecessors, (2427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:13,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2427 transitions. [2022-11-03 02:37:13,090 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2427 transitions. Word has length 344 [2022-11-03 02:37:13,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:13,091 INFO L495 AbstractCegarLoop]: Abstraction has 1841 states and 2427 transitions. [2022-11-03 02:37:13,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 12.285714285714286) internal successors, (344), 28 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:13,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2427 transitions. [2022-11-03 02:37:13,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-03 02:37:13,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:13,095 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:37:13,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2022-11-03 02:37:13,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:37:13,315 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:13,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:13,316 INFO L85 PathProgramCache]: Analyzing trace with hash -625616477, now seen corresponding path program 1 times [2022-11-03 02:37:13,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:37:13,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1994168180] [2022-11-03 02:37:13,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:13,319 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:37:13,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:37:13,320 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:37:13,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2022-11-03 02:37:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:14,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:37:14,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:37:15,050 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:15,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:37:15,051 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:37:15,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1994168180] [2022-11-03 02:37:15,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1994168180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:37:15,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:37:15,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:37:15,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096854829] [2022-11-03 02:37:15,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:37:15,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:37:15,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:37:15,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:37:15,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:37:15,053 INFO L87 Difference]: Start difference. First operand 1841 states and 2427 transitions. Second operand has 8 states, 8 states have (on average 43.0) internal successors, (344), 8 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:15,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:15,943 INFO L93 Difference]: Finished difference Result 3287 states and 4376 transitions. [2022-11-03 02:37:15,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 02:37:15,943 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 43.0) internal successors, (344), 8 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2022-11-03 02:37:15,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:15,946 INFO L225 Difference]: With dead ends: 3287 [2022-11-03 02:37:15,946 INFO L226 Difference]: Without dead ends: 2822 [2022-11-03 02:37:15,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 02:37:15,948 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 2082 mSDsluCounter, 3011 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2082 SdHoareTripleChecker+Valid, 3564 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:15,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2082 Valid, 3564 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:37:15,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2822 states. [2022-11-03 02:37:15,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 1859. [2022-11-03 02:37:15,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1859 states, 1858 states have (on average 1.318622174381055) internal successors, (2450), 1858 states have internal predecessors, (2450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:15,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2450 transitions. [2022-11-03 02:37:15,973 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2450 transitions. Word has length 344 [2022-11-03 02:37:15,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:15,973 INFO L495 AbstractCegarLoop]: Abstraction has 1859 states and 2450 transitions. [2022-11-03 02:37:15,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 43.0) internal successors, (344), 8 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:15,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2450 transitions. [2022-11-03 02:37:15,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-03 02:37:15,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:15,977 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:37:16,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (62)] Ended with exit code 0 [2022-11-03 02:37:16,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:37:16,177 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:16,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:16,178 INFO L85 PathProgramCache]: Analyzing trace with hash -239754075, now seen corresponding path program 1 times [2022-11-03 02:37:16,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:37:16,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1851765214] [2022-11-03 02:37:16,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:16,180 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:37:16,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:37:16,181 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:37:16,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2022-11-03 02:37:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:17,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:37:17,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:37:17,746 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:17,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:37:17,747 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:37:17,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1851765214] [2022-11-03 02:37:17,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1851765214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:37:17,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:37:17,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:37:17,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428682757] [2022-11-03 02:37:17,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:37:17,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:37:17,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:37:17,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:37:17,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:37:17,749 INFO L87 Difference]: Start difference. First operand 1859 states and 2450 transitions. Second operand has 7 states, 7 states have (on average 49.142857142857146) internal successors, (344), 7 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:17,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:17,808 INFO L93 Difference]: Finished difference Result 2752 states and 3627 transitions. [2022-11-03 02:37:17,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:37:17,809 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 49.142857142857146) internal successors, (344), 7 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2022-11-03 02:37:17,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:17,811 INFO L225 Difference]: With dead ends: 2752 [2022-11-03 02:37:17,811 INFO L226 Difference]: Without dead ends: 2279 [2022-11-03 02:37:17,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 338 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 02:37:17,812 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 139 mSDsluCounter, 1540 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 1853 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:17,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 1853 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 39 Unchecked, 0.0s Time] [2022-11-03 02:37:17,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2279 states. [2022-11-03 02:37:17,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2279 to 2279. [2022-11-03 02:37:17,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2279 states, 2278 states have (on average 1.311676909569798) internal successors, (2988), 2278 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:17,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 2988 transitions. [2022-11-03 02:37:17,852 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 2988 transitions. Word has length 344 [2022-11-03 02:37:17,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:17,852 INFO L495 AbstractCegarLoop]: Abstraction has 2279 states and 2988 transitions. [2022-11-03 02:37:17,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 49.142857142857146) internal successors, (344), 7 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:17,853 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 2988 transitions. [2022-11-03 02:37:17,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-03 02:37:17,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:17,857 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:37:17,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2022-11-03 02:37:18,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:37:18,085 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:18,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:18,085 INFO L85 PathProgramCache]: Analyzing trace with hash -2136733533, now seen corresponding path program 1 times [2022-11-03 02:37:18,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:37:18,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592623704] [2022-11-03 02:37:18,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:18,087 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:37:18,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:37:18,088 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:37:18,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2022-11-03 02:37:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:19,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:37:19,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:37:19,317 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:19,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:37:19,318 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:37:19,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [592623704] [2022-11-03 02:37:19,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [592623704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:37:19,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:37:19,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:37:19,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501288943] [2022-11-03 02:37:19,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:37:19,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:37:19,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:37:19,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:37:19,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:37:19,319 INFO L87 Difference]: Start difference. First operand 2279 states and 2988 transitions. Second operand has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:19,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:19,531 INFO L93 Difference]: Finished difference Result 2809 states and 3706 transitions. [2022-11-03 02:37:19,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:37:19,532 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2022-11-03 02:37:19,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:19,534 INFO L225 Difference]: With dead ends: 2809 [2022-11-03 02:37:19,534 INFO L226 Difference]: Without dead ends: 2336 [2022-11-03 02:37:19,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:37:19,535 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 439 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:19,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 818 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:37:19,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2022-11-03 02:37:19,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 2279. [2022-11-03 02:37:19,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2279 states, 2278 states have (on average 1.3112379280070237) internal successors, (2987), 2278 states have internal predecessors, (2987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:19,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 2987 transitions. [2022-11-03 02:37:19,562 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 2987 transitions. Word has length 344 [2022-11-03 02:37:19,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:19,562 INFO L495 AbstractCegarLoop]: Abstraction has 2279 states and 2987 transitions. [2022-11-03 02:37:19,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:19,562 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 2987 transitions. [2022-11-03 02:37:19,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-03 02:37:19,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:19,565 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:37:19,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2022-11-03 02:37:19,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:37:19,767 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:19,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:19,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1710179035, now seen corresponding path program 1 times [2022-11-03 02:37:19,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:37:19,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845957024] [2022-11-03 02:37:19,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:19,769 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:37:19,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:37:19,771 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:37:19,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2022-11-03 02:37:20,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:20,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-03 02:37:20,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:37:25,619 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:25,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:37:25,619 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:37:25,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845957024] [2022-11-03 02:37:25,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845957024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:37:25,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:37:25,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-03 02:37:25,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124148110] [2022-11-03 02:37:25,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:37:25,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-03 02:37:25,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:37:25,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-03 02:37:25,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=597, Unknown=0, NotChecked=0, Total=650 [2022-11-03 02:37:25,621 INFO L87 Difference]: Start difference. First operand 2279 states and 2987 transitions. Second operand has 26 states, 26 states have (on average 13.23076923076923) internal successors, (344), 26 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:25,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:25,706 INFO L93 Difference]: Finished difference Result 3104 states and 4083 transitions. [2022-11-03 02:37:25,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-03 02:37:25,708 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.23076923076923) internal successors, (344), 26 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2022-11-03 02:37:25,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:25,710 INFO L225 Difference]: With dead ends: 3104 [2022-11-03 02:37:25,710 INFO L226 Difference]: Without dead ends: 2631 [2022-11-03 02:37:25,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=53, Invalid=597, Unknown=0, NotChecked=0, Total=650 [2022-11-03 02:37:25,711 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 264 mSDsluCounter, 6251 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 6543 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 370 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:25,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 6543 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 370 Unchecked, 0.1s Time] [2022-11-03 02:37:25,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2631 states. [2022-11-03 02:37:25,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2631 to 2613. [2022-11-03 02:37:25,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2613 states, 2612 states have (on average 1.3097243491577335) internal successors, (3421), 2612 states have internal predecessors, (3421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:25,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 3421 transitions. [2022-11-03 02:37:25,742 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 3421 transitions. Word has length 344 [2022-11-03 02:37:25,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:25,743 INFO L495 AbstractCegarLoop]: Abstraction has 2613 states and 3421 transitions. [2022-11-03 02:37:25,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.23076923076923) internal successors, (344), 26 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:25,743 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 3421 transitions. [2022-11-03 02:37:25,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-03 02:37:25,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:25,746 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:37:25,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2022-11-03 02:37:25,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:37:25,947 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:25,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:25,947 INFO L85 PathProgramCache]: Analyzing trace with hash 796918439, now seen corresponding path program 1 times [2022-11-03 02:37:25,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:37:25,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [739816313] [2022-11-03 02:37:25,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:25,949 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:37:25,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:37:25,950 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:37:25,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2022-11-03 02:37:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:26,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:37:26,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:37:27,183 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:27,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:37:27,183 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:37:27,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [739816313] [2022-11-03 02:37:27,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [739816313] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:37:27,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:37:27,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:37:27,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021882856] [2022-11-03 02:37:27,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:37:27,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:37:27,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:37:27,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:37:27,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:37:27,185 INFO L87 Difference]: Start difference. First operand 2613 states and 3421 transitions. Second operand has 7 states, 7 states have (on average 49.142857142857146) internal successors, (344), 7 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:27,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:27,558 INFO L93 Difference]: Finished difference Result 4188 states and 5538 transitions. [2022-11-03 02:37:27,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:37:27,559 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 49.142857142857146) internal successors, (344), 7 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2022-11-03 02:37:27,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:27,562 INFO L225 Difference]: With dead ends: 4188 [2022-11-03 02:37:27,562 INFO L226 Difference]: Without dead ends: 3715 [2022-11-03 02:37:27,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 338 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 02:37:27,563 INFO L413 NwaCegarLoop]: 594 mSDtfsCounter, 1118 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 2481 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:27,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1118 Valid, 2481 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 62 Unchecked, 0.3s Time] [2022-11-03 02:37:27,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3715 states. [2022-11-03 02:37:27,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3715 to 2859. [2022-11-03 02:37:27,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2859 states, 2858 states have (on average 1.3142057382785164) internal successors, (3756), 2858 states have internal predecessors, (3756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:27,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2859 states to 2859 states and 3756 transitions. [2022-11-03 02:37:27,607 INFO L78 Accepts]: Start accepts. Automaton has 2859 states and 3756 transitions. Word has length 344 [2022-11-03 02:37:27,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:27,608 INFO L495 AbstractCegarLoop]: Abstraction has 2859 states and 3756 transitions. [2022-11-03 02:37:27,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 49.142857142857146) internal successors, (344), 7 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:27,608 INFO L276 IsEmpty]: Start isEmpty. Operand 2859 states and 3756 transitions. [2022-11-03 02:37:27,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-03 02:37:27,612 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:27,613 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:37:27,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2022-11-03 02:37:27,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:37:27,827 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:27,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:27,827 INFO L85 PathProgramCache]: Analyzing trace with hash 866566313, now seen corresponding path program 1 times [2022-11-03 02:37:27,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:37:27,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1698968748] [2022-11-03 02:37:27,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:27,830 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:37:27,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:37:27,831 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:37:27,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2022-11-03 02:37:28,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:28,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 02:37:28,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:37:30,163 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 78 proven. 29 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:37:30,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:37:31,970 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 78 proven. 29 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:37:31,970 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:37:31,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1698968748] [2022-11-03 02:37:31,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1698968748] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:37:31,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [413177734] [2022-11-03 02:37:31,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:31,971 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:37:31,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:37:31,972 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:37:31,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (68)] Waiting until timeout for monitored process [2022-11-03 02:37:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:33,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:37:33,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:37:33,611 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-03 02:37:33,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:37:33,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [413177734] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:37:33,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:37:33,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2022-11-03 02:37:33,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853981783] [2022-11-03 02:37:33,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:37:33,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:37:33,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:37:33,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:37:33,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:37:33,613 INFO L87 Difference]: Start difference. First operand 2859 states and 3756 transitions. Second operand has 5 states, 5 states have (on average 51.2) internal successors, (256), 5 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:33,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:33,732 INFO L93 Difference]: Finished difference Result 6270 states and 8317 transitions. [2022-11-03 02:37:33,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:37:33,733 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.2) internal successors, (256), 5 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2022-11-03 02:37:33,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:33,736 INFO L225 Difference]: With dead ends: 6270 [2022-11-03 02:37:33,736 INFO L226 Difference]: Without dead ends: 5797 [2022-11-03 02:37:33,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1035 GetRequests, 1021 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 02:37:33,738 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 1545 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 1800 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 02:37:33,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1545 Valid, 1800 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:37:33,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5797 states. [2022-11-03 02:37:33,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5797 to 2875. [2022-11-03 02:37:33,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2875 states, 2874 states have (on average 1.314544189283229) internal successors, (3778), 2874 states have internal predecessors, (3778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:33,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 3778 transitions. [2022-11-03 02:37:33,791 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 3778 transitions. Word has length 344 [2022-11-03 02:37:33,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:33,791 INFO L495 AbstractCegarLoop]: Abstraction has 2875 states and 3778 transitions. [2022-11-03 02:37:33,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.2) internal successors, (256), 5 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:33,791 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 3778 transitions. [2022-11-03 02:37:33,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-03 02:37:33,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:33,796 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:37:33,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (68)] Forceful destruction successful, exit code 0 [2022-11-03 02:37:34,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (67)] Ended with exit code 0 [2022-11-03 02:37:34,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:37:34,205 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:34,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:34,205 INFO L85 PathProgramCache]: Analyzing trace with hash 928605927, now seen corresponding path program 1 times [2022-11-03 02:37:34,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:37:34,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559599377] [2022-11-03 02:37:34,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:34,208 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:37:34,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:37:34,210 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:37:34,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2022-11-03 02:37:35,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:35,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 02:37:35,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:37:36,636 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 78 proven. 29 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:37:36,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:37:38,380 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 78 proven. 29 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:37:38,381 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:37:38,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559599377] [2022-11-03 02:37:38,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1559599377] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:37:38,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1000669088] [2022-11-03 02:37:38,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:38,381 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:37:38,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:37:38,382 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:37:38,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (70)] Waiting until timeout for monitored process [2022-11-03 02:37:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:39,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:37:39,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:37:40,060 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-03 02:37:40,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:37:40,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1000669088] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:37:40,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:37:40,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2022-11-03 02:37:40,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518056557] [2022-11-03 02:37:40,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:37:40,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:37:40,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:37:40,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:37:40,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:37:40,063 INFO L87 Difference]: Start difference. First operand 2875 states and 3778 transitions. Second operand has 5 states, 5 states have (on average 51.2) internal successors, (256), 5 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:40,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:40,180 INFO L93 Difference]: Finished difference Result 6196 states and 8215 transitions. [2022-11-03 02:37:40,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:37:40,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.2) internal successors, (256), 5 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2022-11-03 02:37:40,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:40,184 INFO L225 Difference]: With dead ends: 6196 [2022-11-03 02:37:40,184 INFO L226 Difference]: Without dead ends: 5707 [2022-11-03 02:37:40,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1035 GetRequests, 1021 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 02:37:40,186 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 1526 mSDsluCounter, 1334 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 1825 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:40,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1526 Valid, 1825 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:37:40,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5707 states. [2022-11-03 02:37:40,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5707 to 2907. [2022-11-03 02:37:40,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2907 states, 2906 states have (on average 1.315209910529938) internal successors, (3822), 2906 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:40,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2907 states to 2907 states and 3822 transitions. [2022-11-03 02:37:40,243 INFO L78 Accepts]: Start accepts. Automaton has 2907 states and 3822 transitions. Word has length 344 [2022-11-03 02:37:40,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:40,243 INFO L495 AbstractCegarLoop]: Abstraction has 2907 states and 3822 transitions. [2022-11-03 02:37:40,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.2) internal successors, (256), 5 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:40,244 INFO L276 IsEmpty]: Start isEmpty. Operand 2907 states and 3822 transitions. [2022-11-03 02:37:40,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-03 02:37:40,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:40,248 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:37:40,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (70)] Forceful destruction successful, exit code 0 [2022-11-03 02:37:40,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (69)] Ended with exit code 0 [2022-11-03 02:37:40,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:37:40,659 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:40,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:40,659 INFO L85 PathProgramCache]: Analyzing trace with hash 985864229, now seen corresponding path program 1 times [2022-11-03 02:37:40,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:37:40,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2034402096] [2022-11-03 02:37:40,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:40,661 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:37:40,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:37:40,662 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:37:40,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2022-11-03 02:37:41,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:41,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 02:37:41,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:37:43,076 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 78 proven. 29 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:37:43,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:37:44,739 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 78 proven. 29 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:37:44,739 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:37:44,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2034402096] [2022-11-03 02:37:44,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2034402096] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:37:44,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [106628411] [2022-11-03 02:37:44,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:44,740 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:37:44,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:37:44,741 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:37:44,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (72)] Waiting until timeout for monitored process [2022-11-03 02:37:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:47,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:37:47,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:37:47,993 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 38 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:48,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:37:48,691 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 38 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:48,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [106628411] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:37:48,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941399699] [2022-11-03 02:37:48,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:48,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:37:48,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:37:48,693 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:37:48,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-11-03 02:37:49,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:49,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:37:49,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:37:50,469 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 38 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:50,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:37:51,136 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 38 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:51,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941399699] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:37:51,136 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:37:51,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8, 8, 8, 8] total 19 [2022-11-03 02:37:51,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490229757] [2022-11-03 02:37:51,137 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:37:51,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-03 02:37:51,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:37:51,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-03 02:37:51,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-11-03 02:37:51,141 INFO L87 Difference]: Start difference. First operand 2907 states and 3822 transitions. Second operand has 19 states, 19 states have (on average 54.63157894736842) internal successors, (1038), 19 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:53,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:53,461 INFO L93 Difference]: Finished difference Result 8685 states and 11554 transitions. [2022-11-03 02:37:53,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-03 02:37:53,462 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 54.63157894736842) internal successors, (1038), 19 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2022-11-03 02:37:53,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:53,467 INFO L225 Difference]: With dead ends: 8685 [2022-11-03 02:37:53,467 INFO L226 Difference]: Without dead ends: 8164 [2022-11-03 02:37:53,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2083 GetRequests, 2043 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 02:37:53,470 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 4750 mSDsluCounter, 8058 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4750 SdHoareTripleChecker+Valid, 8369 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 143 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:53,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4750 Valid, 8369 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 713 Invalid, 0 Unknown, 143 Unchecked, 1.4s Time] [2022-11-03 02:37:53,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8164 states. [2022-11-03 02:37:53,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8164 to 5087. [2022-11-03 02:37:53,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5087 states, 5086 states have (on average 1.310263468344475) internal successors, (6664), 5086 states have internal predecessors, (6664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:53,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5087 states to 5087 states and 6664 transitions. [2022-11-03 02:37:53,580 INFO L78 Accepts]: Start accepts. Automaton has 5087 states and 6664 transitions. Word has length 344 [2022-11-03 02:37:53,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:53,580 INFO L495 AbstractCegarLoop]: Abstraction has 5087 states and 6664 transitions. [2022-11-03 02:37:53,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 54.63157894736842) internal successors, (1038), 19 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:53,580 INFO L276 IsEmpty]: Start isEmpty. Operand 5087 states and 6664 transitions. [2022-11-03 02:37:53,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-03 02:37:53,586 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:53,586 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 02:37:53,599 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (72)] Ended with exit code 0 [2022-11-03 02:37:53,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2022-11-03 02:37:54,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (71)] Ended with exit code 0 [2022-11-03 02:37:54,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:37:54,187 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:54,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:54,188 INFO L85 PathProgramCache]: Analyzing trace with hash 756559397, now seen corresponding path program 1 times [2022-11-03 02:37:54,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:37:54,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020088238] [2022-11-03 02:37:54,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:54,191 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:37:54,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:37:54,192 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:37:54,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2022-11-03 02:37:55,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:55,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 02:37:55,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:37:58,052 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 46 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:37:58,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:38:00,870 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 46 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:38:00,870 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:38:00,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020088238] [2022-11-03 02:38:00,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2020088238] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:38:00,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [705251088] [2022-11-03 02:38:00,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:00,871 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:38:00,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:38:00,872 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:38:00,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (75)] Waiting until timeout for monitored process [2022-11-03 02:38:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:02,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:38:02,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:38:02,723 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-03 02:38:02,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:38:02,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [705251088] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:38:02,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:38:02,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2022-11-03 02:38:02,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048249031] [2022-11-03 02:38:02,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:38:02,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:38:02,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:38:02,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:38:02,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:38:02,725 INFO L87 Difference]: Start difference. First operand 5087 states and 6664 transitions. Second operand has 5 states, 5 states have (on average 51.8) internal successors, (259), 5 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:38:02,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:02,987 INFO L93 Difference]: Finished difference Result 7938 states and 10446 transitions. [2022-11-03 02:38:02,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:38:02,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.8) internal successors, (259), 5 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2022-11-03 02:38:02,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:02,993 INFO L225 Difference]: With dead ends: 7938 [2022-11-03 02:38:02,993 INFO L226 Difference]: Without dead ends: 6757 [2022-11-03 02:38:02,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1034 GetRequests, 1020 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 02:38:02,995 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 1192 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 1505 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 02:38:02,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1192 Valid, 1505 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:38:02,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6757 states. [2022-11-03 02:38:03,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6757 to 5095. [2022-11-03 02:38:03,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5095 states, 5094 states have (on average 1.309776207302709) internal successors, (6672), 5094 states have internal predecessors, (6672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:38:03,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5095 states to 5095 states and 6672 transitions. [2022-11-03 02:38:03,105 INFO L78 Accepts]: Start accepts. Automaton has 5095 states and 6672 transitions. Word has length 344 [2022-11-03 02:38:03,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:03,105 INFO L495 AbstractCegarLoop]: Abstraction has 5095 states and 6672 transitions. [2022-11-03 02:38:03,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.8) internal successors, (259), 5 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:38:03,106 INFO L276 IsEmpty]: Start isEmpty. Operand 5095 states and 6672 transitions. [2022-11-03 02:38:03,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-03 02:38:03,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:03,114 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:38:03,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (75)] Ended with exit code 0 [2022-11-03 02:38:03,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (74)] Ended with exit code 0 [2022-11-03 02:38:03,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:38:03,514 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:38:03,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:03,515 INFO L85 PathProgramCache]: Analyzing trace with hash -272799901, now seen corresponding path program 1 times [2022-11-03 02:38:03,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:38:03,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [465663824] [2022-11-03 02:38:03,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:03,518 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:38:03,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:38:03,520 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:38:03,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2022-11-03 02:38:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:04,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 02:38:04,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:38:07,012 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 46 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:38:07,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:38:09,785 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 46 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:38:09,785 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:38:09,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [465663824] [2022-11-03 02:38:09,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [465663824] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:38:09,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2004706184] [2022-11-03 02:38:09,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:09,786 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:38:09,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:38:09,787 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:38:09,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (77)] Waiting until timeout for monitored process [2022-11-03 02:38:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:11,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:38:11,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:38:11,577 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-03 02:38:11,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:38:11,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2004706184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:38:11,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:38:11,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2022-11-03 02:38:11,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371562164] [2022-11-03 02:38:11,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:38:11,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:38:11,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:38:11,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:38:11,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:38:11,579 INFO L87 Difference]: Start difference. First operand 5095 states and 6672 transitions. Second operand has 5 states, 5 states have (on average 51.8) internal successors, (259), 5 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:38:11,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:11,819 INFO L93 Difference]: Finished difference Result 7986 states and 10502 transitions. [2022-11-03 02:38:11,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:38:11,819 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.8) internal successors, (259), 5 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2022-11-03 02:38:11,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:11,825 INFO L225 Difference]: With dead ends: 7986 [2022-11-03 02:38:11,826 INFO L226 Difference]: Without dead ends: 6797 [2022-11-03 02:38:11,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1035 GetRequests, 1021 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 02:38:11,829 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 1193 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 1504 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 02:38:11,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1193 Valid, 1504 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:38:11,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6797 states. [2022-11-03 02:38:11,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6797 to 5143. [2022-11-03 02:38:12,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 1.309996110462855) internal successors, (6736), 5142 states have internal predecessors, (6736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:38:12,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 6736 transitions. [2022-11-03 02:38:12,009 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 6736 transitions. Word has length 344 [2022-11-03 02:38:12,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:12,009 INFO L495 AbstractCegarLoop]: Abstraction has 5143 states and 6736 transitions. [2022-11-03 02:38:12,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.8) internal successors, (259), 5 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:38:12,010 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 6736 transitions. [2022-11-03 02:38:12,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-03 02:38:12,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:12,023 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:38:12,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (77)] Forceful destruction successful, exit code 0 [2022-11-03 02:38:12,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2022-11-03 02:38:12,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:38:12,443 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:38:12,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:12,443 INFO L85 PathProgramCache]: Analyzing trace with hash -250167647, now seen corresponding path program 1 times [2022-11-03 02:38:12,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:38:12,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2015371233] [2022-11-03 02:38:12,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:12,445 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:38:12,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:38:12,446 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:38:12,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2022-11-03 02:38:13,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:13,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 02:38:13,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:38:16,134 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 46 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:38:16,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:38:19,043 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 46 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:38:19,043 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:38:19,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2015371233] [2022-11-03 02:38:19,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2015371233] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:38:19,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1662571680] [2022-11-03 02:38:19,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:19,044 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:38:19,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:38:19,045 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:38:19,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (79)] Waiting until timeout for monitored process [2022-11-03 02:38:20,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:20,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:38:20,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:38:20,890 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-03 02:38:20,890 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:38:20,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1662571680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:38:20,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:38:20,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2022-11-03 02:38:20,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455300819] [2022-11-03 02:38:20,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:38:20,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:38:20,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:38:20,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:38:20,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:38:20,893 INFO L87 Difference]: Start difference. First operand 5143 states and 6736 transitions. Second operand has 5 states, 5 states have (on average 51.8) internal successors, (259), 5 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:38:21,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:21,104 INFO L93 Difference]: Finished difference Result 8186 states and 10766 transitions. [2022-11-03 02:38:21,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:38:21,104 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.8) internal successors, (259), 5 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2022-11-03 02:38:21,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:21,109 INFO L225 Difference]: With dead ends: 8186 [2022-11-03 02:38:21,109 INFO L226 Difference]: Without dead ends: 6949 [2022-11-03 02:38:21,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1035 GetRequests, 1021 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 02:38:21,111 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 1200 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 1503 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 02:38:21,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1200 Valid, 1503 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:38:21,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6949 states. [2022-11-03 02:38:21,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6949 to 5287. [2022-11-03 02:38:21,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5287 states, 5286 states have (on average 1.3113885735906168) internal successors, (6932), 5286 states have internal predecessors, (6932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:38:21,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5287 states to 5287 states and 6932 transitions. [2022-11-03 02:38:21,180 INFO L78 Accepts]: Start accepts. Automaton has 5287 states and 6932 transitions. Word has length 344 [2022-11-03 02:38:21,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:21,180 INFO L495 AbstractCegarLoop]: Abstraction has 5287 states and 6932 transitions. [2022-11-03 02:38:21,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.8) internal successors, (259), 5 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:38:21,180 INFO L276 IsEmpty]: Start isEmpty. Operand 5287 states and 6932 transitions. [2022-11-03 02:38:21,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-03 02:38:21,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:21,185 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:38:21,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (79)] Forceful destruction successful, exit code 0 [2022-11-03 02:38:21,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (78)] Ended with exit code 0 [2022-11-03 02:38:21,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:38:21,586 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:38:21,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:21,586 INFO L85 PathProgramCache]: Analyzing trace with hash -643194657, now seen corresponding path program 1 times [2022-11-03 02:38:21,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:38:21,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2132121478] [2022-11-03 02:38:21,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:21,588 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:38:21,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:38:21,589 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:38:21,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2022-11-03 02:38:22,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:22,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 02:38:22,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:38:25,122 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 46 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:38:25,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:38:27,926 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 46 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:38:27,927 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:38:27,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2132121478] [2022-11-03 02:38:27,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2132121478] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:38:27,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [402525195] [2022-11-03 02:38:27,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:27,928 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:38:27,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:38:27,932 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:38:27,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (81)] Waiting until timeout for monitored process [2022-11-03 02:38:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:30,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-03 02:38:30,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:38:33,008 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 46 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:38:33,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:38:40,056 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 46 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:38:40,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [402525195] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:38:40,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82403228] [2022-11-03 02:38:40,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:40,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:38:40,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:38:40,058 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:38:40,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-11-03 02:38:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:41,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 02:38:41,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:38:42,083 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 46 proven. 64 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:38:42,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:38:43,182 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 49 proven. 61 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:38:43,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82403228] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:38:43,183 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:38:43,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7, 7, 10, 10] total 27 [2022-11-03 02:38:43,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419909464] [2022-11-03 02:38:43,183 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:38:43,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-03 02:38:43,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:38:43,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-03 02:38:43,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2022-11-03 02:38:43,185 INFO L87 Difference]: Start difference. First operand 5287 states and 6932 transitions. Second operand has 27 states, 27 states have (on average 49.333333333333336) internal successors, (1332), 27 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:38:45,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:45,157 INFO L93 Difference]: Finished difference Result 15873 states and 20907 transitions. [2022-11-03 02:38:45,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-03 02:38:45,159 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 49.333333333333336) internal successors, (1332), 27 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2022-11-03 02:38:45,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:45,171 INFO L225 Difference]: With dead ends: 15873 [2022-11-03 02:38:45,171 INFO L226 Difference]: Without dead ends: 14492 [2022-11-03 02:38:45,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2072 GetRequests, 2035 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=339, Invalid=1143, Unknown=0, NotChecked=0, Total=1482 [2022-11-03 02:38:45,175 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 3573 mSDsluCounter, 10841 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3573 SdHoareTripleChecker+Valid, 11154 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 330 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:45,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3573 Valid, 11154 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 231 Invalid, 0 Unknown, 330 Unchecked, 0.6s Time] [2022-11-03 02:38:45,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14492 states. [2022-11-03 02:38:45,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14492 to 8347. [2022-11-03 02:38:45,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8347 states, 8346 states have (on average 1.3042175892643182) internal successors, (10885), 8346 states have internal predecessors, (10885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:38:45,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8347 states to 8347 states and 10885 transitions. [2022-11-03 02:38:45,337 INFO L78 Accepts]: Start accepts. Automaton has 8347 states and 10885 transitions. Word has length 344 [2022-11-03 02:38:45,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:45,337 INFO L495 AbstractCegarLoop]: Abstraction has 8347 states and 10885 transitions. [2022-11-03 02:38:45,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 49.333333333333336) internal successors, (1332), 27 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:38:45,338 INFO L276 IsEmpty]: Start isEmpty. Operand 8347 states and 10885 transitions. [2022-11-03 02:38:45,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-03 02:38:45,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:45,346 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:38:45,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (80)] Ended with exit code 0 [2022-11-03 02:38:45,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2022-11-03 02:38:45,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (81)] Ended with exit code 0 [2022-11-03 02:38:45,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:38:45,947 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:38:45,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:45,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1712610593, now seen corresponding path program 1 times [2022-11-03 02:38:45,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:38:45,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [186497455] [2022-11-03 02:38:45,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:45,950 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:38:45,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:38:45,951 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:38:45,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f99f177-74b3-451e-8a97-2d3a4b972be4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2022-11-03 02:38:46,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:47,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 168 conjunts are in the unsatisfiable core [2022-11-03 02:38:47,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:39:16,610 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:39:16,611 INFO L328 TraceCheckSpWp]: Computing backward predicates...