./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c9ff936057be59b0f479a8c37fd17409fe797633e9a8a05703f5728379735d91 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:31:17,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:31:17,199 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:31:17,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:31:17,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:31:17,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:31:17,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:31:17,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:31:17,253 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:31:17,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:31:17,256 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:31:17,258 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:31:17,258 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:31:17,260 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:31:17,261 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:31:17,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:31:17,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:31:17,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:31:17,268 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:31:17,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:31:17,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:31:17,275 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:31:17,276 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:31:17,277 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:31:17,281 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:31:17,282 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:31:17,282 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:31:17,284 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:31:17,284 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:31:17,285 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:31:17,286 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:31:17,287 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:31:17,288 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:31:17,293 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:31:17,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:31:17,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:31:17,296 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:31:17,296 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:31:17,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:31:17,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:31:17,299 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:31:17,306 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 12:31:17,346 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:31:17,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:31:17,347 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:31:17,347 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:31:17,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:31:17,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:31:17,355 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:31:17,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:31:17,356 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:31:17,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:31:17,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:31:17,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:31:17,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:31:17,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:31:17,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:31:17,359 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:31:17,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:31:17,359 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:31:17,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:31:17,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:31:17,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:31:17,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:31:17,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:31:17,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:31:17,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:31:17,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:31:17,361 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:31:17,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:31:17,362 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:31:17,364 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:31:17,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:31:17,364 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:31:17,364 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_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9ff936057be59b0f479a8c37fd17409fe797633e9a8a05703f5728379735d91 [2021-11-23 12:31:17,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:31:17,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:31:17,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:31:17,740 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:31:17,741 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:31:17,742 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c [2021-11-23 12:31:17,833 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/data/4d1f80e63/64e72086801942139790976d3d8db6da/FLAG8e6d6e41d [2021-11-23 12:31:18,432 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:31:18,432 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c [2021-11-23 12:31:18,440 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/data/4d1f80e63/64e72086801942139790976d3d8db6da/FLAG8e6d6e41d [2021-11-23 12:31:18,755 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/data/4d1f80e63/64e72086801942139790976d3d8db6da [2021-11-23 12:31:18,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:31:18,759 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:31:18,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:31:18,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:31:18,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:31:18,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:31:18" (1/1) ... [2021-11-23 12:31:18,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4100371d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:18, skipping insertion in model container [2021-11-23 12:31:18,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:31:18" (1/1) ... [2021-11-23 12:31:18,774 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:31:18,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:31:18,981 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c[755,768] [2021-11-23 12:31:19,036 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:31:19,044 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:31:19,056 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_1154c6c8-5058-4a65-a5cf-f17829ddbf99/sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c[755,768] [2021-11-23 12:31:19,096 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:31:19,109 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:31:19,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:19 WrapperNode [2021-11-23 12:31:19,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:31:19,111 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:31:19,111 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:31:19,111 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:31:19,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:19" (1/1) ... [2021-11-23 12:31:19,143 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:19" (1/1) ... [2021-11-23 12:31:19,191 INFO L137 Inliner]: procedures = 17, calls = 18, calls flagged for inlining = 13, calls inlined = 11, statements flattened = 298 [2021-11-23 12:31:19,192 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:31:19,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:31:19,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:31:19,193 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:31:19,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:19" (1/1) ... [2021-11-23 12:31:19,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:19" (1/1) ... [2021-11-23 12:31:19,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:19" (1/1) ... [2021-11-23 12:31:19,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:19" (1/1) ... [2021-11-23 12:31:19,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:19" (1/1) ... [2021-11-23 12:31:19,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:19" (1/1) ... [2021-11-23 12:31:19,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:19" (1/1) ... [2021-11-23 12:31:19,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:31:19,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:31:19,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:31:19,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:31:19,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:19" (1/1) ... [2021-11-23 12:31:19,280 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:31:19,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:31:19,313 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:31:19,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:31:19,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:31:19,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:31:19,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:31:19,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:31:19,477 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:31:19,493 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:31:19,986 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:31:19,996 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:31:19,997 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-23 12:31:19,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:31:19 BoogieIcfgContainer [2021-11-23 12:31:19,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:31:20,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:31:20,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:31:20,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:31:20,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:31:18" (1/3) ... [2021-11-23 12:31:20,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@170be0cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:31:20, skipping insertion in model container [2021-11-23 12:31:20,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:19" (2/3) ... [2021-11-23 12:31:20,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@170be0cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:31:20, skipping insertion in model container [2021-11-23 12:31:20,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:31:19" (3/3) ... [2021-11-23 12:31:20,009 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-2a.c.cil.c [2021-11-23 12:31:20,014 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:31:20,015 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-23 12:31:20,080 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:31:20,114 INFO L339 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=PETRI_NET, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 12:31:20,114 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-23 12:31:20,146 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 91 states have (on average 1.7032967032967032) internal successors, (155), 96 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:20,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 12:31:20,157 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:20,158 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:31:20,158 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:31:20,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:20,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1626643796, now seen corresponding path program 1 times [2021-11-23 12:31:20,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:31:20,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615877099] [2021-11-23 12:31:20,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:20,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:31:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:20,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:20,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:31:20,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615877099] [2021-11-23 12:31:20,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615877099] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:20,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:20,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 12:31:20,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624905005] [2021-11-23 12:31:20,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:20,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 12:31:20,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:31:20,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 12:31:20,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:31:20,520 INFO L87 Difference]: Start difference. First operand has 97 states, 91 states have (on average 1.7032967032967032) internal successors, (155), 96 states have internal predecessors, (155), 0 states have call successors, (0), 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 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:20,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:20,887 INFO L93 Difference]: Finished difference Result 469 states and 703 transitions. [2021-11-23 12:31:20,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 12:31:20,890 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-23 12:31:20,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:20,915 INFO L225 Difference]: With dead ends: 469 [2021-11-23 12:31:20,916 INFO L226 Difference]: Without dead ends: 352 [2021-11-23 12:31:20,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-11-23 12:31:20,927 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 952 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:20,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [952 Valid, 816 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:31:20,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-11-23 12:31:21,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 144. [2021-11-23 12:31:21,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 139 states have (on average 1.4892086330935252) internal successors, (207), 143 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:21,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 207 transitions. [2021-11-23 12:31:21,027 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 207 transitions. Word has length 18 [2021-11-23 12:31:21,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:21,028 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 207 transitions. [2021-11-23 12:31:21,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:21,028 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 207 transitions. [2021-11-23 12:31:21,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 12:31:21,029 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:21,030 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:31:21,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 12:31:21,030 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:31:21,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:21,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1626703378, now seen corresponding path program 1 times [2021-11-23 12:31:21,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:31:21,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587760823] [2021-11-23 12:31:21,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:21,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:31:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:21,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:21,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:31:21,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587760823] [2021-11-23 12:31:21,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587760823] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:21,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:21,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 12:31:21,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4819197] [2021-11-23 12:31:21,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:21,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:31:21,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:31:21,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:31:21,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:31:21,145 INFO L87 Difference]: Start difference. First operand 144 states and 207 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:21,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:21,290 INFO L93 Difference]: Finished difference Result 307 states and 433 transitions. [2021-11-23 12:31:21,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:31:21,291 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-23 12:31:21,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:21,292 INFO L225 Difference]: With dead ends: 307 [2021-11-23 12:31:21,293 INFO L226 Difference]: Without dead ends: 221 [2021-11-23 12:31:21,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-23 12:31:21,295 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 216 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:21,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 578 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:31:21,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-11-23 12:31:21,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 208. [2021-11-23 12:31:21,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 203 states have (on average 1.4482758620689655) internal successors, (294), 207 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:21,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 294 transitions. [2021-11-23 12:31:21,313 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 294 transitions. Word has length 18 [2021-11-23 12:31:21,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:21,314 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 294 transitions. [2021-11-23 12:31:21,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:21,314 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 294 transitions. [2021-11-23 12:31:21,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 12:31:21,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:21,316 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:31:21,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 12:31:21,317 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:31:21,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:21,317 INFO L85 PathProgramCache]: Analyzing trace with hash 442130173, now seen corresponding path program 1 times [2021-11-23 12:31:21,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:31:21,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52400156] [2021-11-23 12:31:21,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:21,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:31:21,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:21,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:21,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:31:21,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52400156] [2021-11-23 12:31:21,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52400156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:21,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:21,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 12:31:21,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598500459] [2021-11-23 12:31:21,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:21,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 12:31:21,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:31:21,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 12:31:21,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:31:21,522 INFO L87 Difference]: Start difference. First operand 208 states and 294 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:21,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:21,783 INFO L93 Difference]: Finished difference Result 323 states and 429 transitions. [2021-11-23 12:31:21,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 12:31:21,784 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-23 12:31:21,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:21,786 INFO L225 Difference]: With dead ends: 323 [2021-11-23 12:31:21,786 INFO L226 Difference]: Without dead ends: 275 [2021-11-23 12:31:21,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-11-23 12:31:21,795 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 431 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:21,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [431 Valid, 818 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:31:21,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-11-23 12:31:21,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 197. [2021-11-23 12:31:21,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 192 states have (on average 1.4427083333333333) internal successors, (277), 196 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:21,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 277 transitions. [2021-11-23 12:31:21,819 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 277 transitions. Word has length 22 [2021-11-23 12:31:21,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:21,825 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 277 transitions. [2021-11-23 12:31:21,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:21,826 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 277 transitions. [2021-11-23 12:31:21,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 12:31:21,833 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:21,834 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:31:21,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 12:31:21,835 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:31:21,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:21,836 INFO L85 PathProgramCache]: Analyzing trace with hash 65769050, now seen corresponding path program 1 times [2021-11-23 12:31:21,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:31:21,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382206031] [2021-11-23 12:31:21,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:21,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:31:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:21,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:21,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:31:21,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382206031] [2021-11-23 12:31:21,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382206031] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:21,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:21,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:31:21,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697247946] [2021-11-23 12:31:21,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:21,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:31:21,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:31:21,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:31:21,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:31:21,922 INFO L87 Difference]: Start difference. First operand 197 states and 277 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:21,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:21,947 INFO L93 Difference]: Finished difference Result 357 states and 499 transitions. [2021-11-23 12:31:21,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:31:21,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-23 12:31:21,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:21,950 INFO L225 Difference]: With dead ends: 357 [2021-11-23 12:31:21,950 INFO L226 Difference]: Without dead ends: 274 [2021-11-23 12:31:21,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:31:21,962 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 43 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:21,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 253 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:31:21,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-11-23 12:31:21,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 247. [2021-11-23 12:31:21,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 242 states have (on average 1.4090909090909092) internal successors, (341), 246 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:21,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 341 transitions. [2021-11-23 12:31:21,980 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 341 transitions. Word has length 26 [2021-11-23 12:31:21,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:21,981 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 341 transitions. [2021-11-23 12:31:21,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:21,981 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 341 transitions. [2021-11-23 12:31:21,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 12:31:21,982 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:21,982 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:31:21,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 12:31:21,983 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:31:21,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:21,984 INFO L85 PathProgramCache]: Analyzing trace with hash -855546000, now seen corresponding path program 1 times [2021-11-23 12:31:21,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:31:21,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585158625] [2021-11-23 12:31:21,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:21,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:31:22,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:22,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:22,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:31:22,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585158625] [2021-11-23 12:31:22,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585158625] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:22,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:22,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:31:22,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837693480] [2021-11-23 12:31:22,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:22,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:31:22,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:31:22,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:31:22,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:31:22,126 INFO L87 Difference]: Start difference. First operand 247 states and 341 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:22,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:22,250 INFO L93 Difference]: Finished difference Result 626 states and 850 transitions. [2021-11-23 12:31:22,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 12:31:22,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-23 12:31:22,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:22,253 INFO L225 Difference]: With dead ends: 626 [2021-11-23 12:31:22,253 INFO L226 Difference]: Without dead ends: 455 [2021-11-23 12:31:22,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 12:31:22,256 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 379 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:22,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 460 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:31:22,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2021-11-23 12:31:22,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 304. [2021-11-23 12:31:22,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 299 states have (on average 1.3979933110367893) internal successors, (418), 303 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:22,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 418 transitions. [2021-11-23 12:31:22,277 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 418 transitions. Word has length 26 [2021-11-23 12:31:22,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:22,277 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 418 transitions. [2021-11-23 12:31:22,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:22,278 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 418 transitions. [2021-11-23 12:31:22,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-23 12:31:22,283 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:22,283 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:31:22,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 12:31:22,284 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:31:22,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:22,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1868481670, now seen corresponding path program 1 times [2021-11-23 12:31:22,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:31:22,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858678133] [2021-11-23 12:31:22,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:22,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:31:22,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:22,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:22,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:31:22,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858678133] [2021-11-23 12:31:22,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858678133] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:22,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:22,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:31:22,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662179724] [2021-11-23 12:31:22,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:22,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:31:22,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:31:22,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:31:22,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:31:22,358 INFO L87 Difference]: Start difference. First operand 304 states and 418 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:22,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:22,389 INFO L93 Difference]: Finished difference Result 437 states and 602 transitions. [2021-11-23 12:31:22,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:31:22,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-23 12:31:22,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:22,392 INFO L225 Difference]: With dead ends: 437 [2021-11-23 12:31:22,392 INFO L226 Difference]: Without dead ends: 354 [2021-11-23 12:31:22,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:31:22,394 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 105 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:22,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 415 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:31:22,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-11-23 12:31:22,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 314. [2021-11-23 12:31:22,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 309 states have (on average 1.3689320388349515) internal successors, (423), 313 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:22,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 423 transitions. [2021-11-23 12:31:22,410 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 423 transitions. Word has length 30 [2021-11-23 12:31:22,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:22,410 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 423 transitions. [2021-11-23 12:31:22,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:22,410 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 423 transitions. [2021-11-23 12:31:22,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-23 12:31:22,414 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:22,414 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:31:22,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 12:31:22,414 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:31:22,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:22,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1878814160, now seen corresponding path program 1 times [2021-11-23 12:31:22,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:31:22,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312935589] [2021-11-23 12:31:22,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:22,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:31:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:22,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:22,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:31:22,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312935589] [2021-11-23 12:31:22,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312935589] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:22,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:22,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 12:31:22,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066125947] [2021-11-23 12:31:22,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:22,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:31:22,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:31:22,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:31:22,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:31:22,545 INFO L87 Difference]: Start difference. First operand 314 states and 423 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:22,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:22,792 INFO L93 Difference]: Finished difference Result 819 states and 1104 transitions. [2021-11-23 12:31:22,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 12:31:22,793 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-23 12:31:22,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:22,797 INFO L225 Difference]: With dead ends: 819 [2021-11-23 12:31:22,797 INFO L226 Difference]: Without dead ends: 708 [2021-11-23 12:31:22,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-23 12:31:22,798 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 387 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:22,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [387 Valid, 967 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:31:22,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2021-11-23 12:31:22,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 456. [2021-11-23 12:31:22,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 451 states have (on average 1.3658536585365855) internal successors, (616), 455 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:22,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 616 transitions. [2021-11-23 12:31:22,823 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 616 transitions. Word has length 30 [2021-11-23 12:31:22,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:22,823 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 616 transitions. [2021-11-23 12:31:22,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:22,824 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 616 transitions. [2021-11-23 12:31:22,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-23 12:31:22,825 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:22,825 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:31:22,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 12:31:22,825 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:31:22,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:22,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1878873742, now seen corresponding path program 1 times [2021-11-23 12:31:22,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:31:22,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289687381] [2021-11-23 12:31:22,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:22,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:31:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:31:22,866 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 12:31:22,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:31:22,943 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 12:31:22,943 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 12:31:22,944 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2021-11-23 12:31:22,946 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2021-11-23 12:31:22,947 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2021-11-23 12:31:22,947 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2021-11-23 12:31:22,947 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2021-11-23 12:31:22,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 12:31:22,955 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:31:22,958 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 12:31:23,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 12:31:23 BoogieIcfgContainer [2021-11-23 12:31:23,026 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 12:31:23,027 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 12:31:23,027 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 12:31:23,027 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 12:31:23,027 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:31:19" (3/4) ... [2021-11-23 12:31:23,030 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 12:31:23,031 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 12:31:23,033 INFO L158 Benchmark]: Toolchain (without parser) took 4272.36ms. Allocated memory was 100.7MB in the beginning and 132.1MB in the end (delta: 31.5MB). Free memory was 66.9MB in the beginning and 95.9MB in the end (delta: -29.0MB). Peak memory consumption was 1.6MB. Max. memory is 16.1GB. [2021-11-23 12:31:23,034 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 100.7MB. Free memory is still 56.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:31:23,034 INFO L158 Benchmark]: CACSL2BoogieTranslator took 348.90ms. Allocated memory is still 100.7MB. Free memory was 66.7MB in the beginning and 72.4MB in the end (delta: -5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 12:31:23,034 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.89ms. Allocated memory is still 100.7MB. Free memory was 72.4MB in the beginning and 70.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 12:31:23,035 INFO L158 Benchmark]: Boogie Preprocessor took 68.01ms. Allocated memory is still 100.7MB. Free memory was 70.0MB in the beginning and 68.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 12:31:23,036 INFO L158 Benchmark]: RCFGBuilder took 738.30ms. Allocated memory is still 100.7MB. Free memory was 68.2MB in the beginning and 51.8MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-23 12:31:23,037 INFO L158 Benchmark]: TraceAbstraction took 3024.74ms. Allocated memory was 100.7MB in the beginning and 132.1MB in the end (delta: 31.5MB). Free memory was 51.4MB in the beginning and 95.9MB in the end (delta: -44.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:31:23,038 INFO L158 Benchmark]: Witness Printer took 4.20ms. Allocated memory is still 132.1MB. Free memory is still 95.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:31:23,046 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 100.7MB. Free memory is still 56.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 348.90ms. Allocated memory is still 100.7MB. Free memory was 66.7MB in the beginning and 72.4MB in the end (delta: -5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.89ms. Allocated memory is still 100.7MB. Free memory was 72.4MB in the beginning and 70.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.01ms. Allocated memory is still 100.7MB. Free memory was 70.0MB in the beginning and 68.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 738.30ms. Allocated memory is still 100.7MB. Free memory was 68.2MB in the beginning and 51.8MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3024.74ms. Allocated memory was 100.7MB in the beginning and 132.1MB in the end (delta: 31.5MB). Free memory was 51.4MB in the beginning and 95.9MB in the end (delta: -44.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.20ms. Allocated memory is still 132.1MB. Free memory is still 95.9MB. 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: 18]: 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 111, overapproximation of bitwiseAnd at line 109. Possible FailurePath: [L227] unsigned int a ; [L228] unsigned int ma = __VERIFIER_nondet_uint(); [L229] signed char ea = __VERIFIER_nondet_char(); [L230] unsigned int b ; [L231] unsigned int mb = __VERIFIER_nondet_uint(); [L232] signed char eb = __VERIFIER_nondet_char(); [L233] unsigned int r_add ; [L234] unsigned int zero ; [L235] int sa ; [L236] int sb ; [L237] int tmp ; [L238] int tmp___0 ; [L239] int tmp___1 ; [L240] int tmp___2 ; [L241] int tmp___3 ; [L242] int tmp___4 ; [L243] int tmp___5 ; [L244] int tmp___6 ; [L245] int tmp___7 ; [L246] int tmp___8 ; [L247] int tmp___9 ; [L248] int __retres23 ; [L252] CALL, EXPR base2flt(0, 0) [L26] unsigned int res ; [L27] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L30] COND TRUE ! m [L31] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0, m=0] [L81] return (__retres4); VAL [\old(e)=0, \old(m)=0, \result=0, __retres4=0, e=0, m=0] [L252] RET, EXPR base2flt(0, 0) [L252] zero = base2flt(0, 0) [L253] CALL, EXPR base2flt(ma, ea) [L26] unsigned int res ; [L27] unsigned int __retres4 ; VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L30] COND FALSE !(! m) VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L36] COND FALSE !(m < 1U << 24U) VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L58] COND TRUE 1 VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L60] COND TRUE m >= 1U << 25U VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L65] COND TRUE e >= 127 [L66] __retres4 = 4294967295U VAL [\old(e)=127, \old(m)=33554432, __retres4=4294967295, e=127, m=33554432] [L81] return (__retres4); VAL [\old(e)=127, \old(m)=33554432, \result=4294967295, __retres4=4294967295, e=127, m=33554432] [L253] RET, EXPR base2flt(ma, ea) [L253] a = base2flt(ma, ea) [L254] CALL, EXPR base2flt(mb, eb) [L26] unsigned int res ; [L27] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L30] COND FALSE !(! m) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L36] COND FALSE !(m < 1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L58] COND TRUE 1 VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L60] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L77] m = m & ~ (1U << 24U) [L78] res = m | ((unsigned int ) (e + 128) << 24U) [L79] __retres4 = res VAL [\old(e)=0, \old(m)=16777216, __retres4=16777215, e=0, res=16777215] [L81] return (__retres4); VAL [\old(e)=0, \old(m)=16777216, \result=-72057589726183425, __retres4=16777215, e=0, res=16777215] [L254] RET, EXPR base2flt(mb, eb) [L254] b = base2flt(mb, eb) [L256] COND FALSE !(a < zero) VAL [a=4294967295, b=16777215, ea=127, eb=0, ma=33554432, mb=16777216, zero=0] [L259] COND TRUE a > zero [L260] tmp = 1 VAL [a=4294967295, b=16777215, ea=127, eb=0, ma=33554432, mb=16777216, tmp=1, zero=0] [L264] sa = tmp VAL [a=4294967295, b=16777215, ea=127, eb=0, ma=33554432, mb=16777216, sa=1, tmp=1, zero=0] [L266] COND FALSE !(b < zero) VAL [a=4294967295, b=16777215, ea=127, eb=0, ma=33554432, mb=16777216, sa=1, tmp=1, zero=0] [L269] COND TRUE b > zero [L270] tmp___0 = 1 VAL [a=4294967295, b=16777215, ea=127, eb=0, ma=33554432, mb=16777216, sa=1, tmp=1, tmp___0=1, zero=0] [L274] sb = tmp___0 VAL [a=4294967295, b=16777215, ea=127, eb=0, ma=33554432, mb=16777216, sa=1, sb=1, tmp=1, tmp___0=1, zero=0] [L277] CALL addflt(a, b) [L85] unsigned int res ; [L86] unsigned int ma ; [L87] unsigned int mb ; [L88] unsigned int delta ; [L89] int ea ; [L90] int eb ; [L91] unsigned int tmp ; [L92] unsigned int __retres10 ; VAL [\old(a)=4294967295, \old(b)=16777215, a=4294967295, b=16777215] [L95] COND FALSE !(a < b) VAL [\old(a)=4294967295, \old(b)=16777215, a=4294967295, b=16777215] [L102] COND FALSE !(! b) [L109] ma = a & ((1U << 24U) - 1U) [L110] ea = (int )(a >> 24U) - 128 [L111] ma = ma | (1U << 24U) [L112] mb = b & ((1U << 24U) - 1U) [L113] eb = (int )(b >> 24U) - 128 [L114] mb = mb | (1U << 24U) [L115] CALL __VERIFIER_assert(ea >= eb) [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L18] reach_error() VAL [\old(cond)=0, cond=0] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 97 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 2.9s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2513 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2513 mSDsluCounter, 4307 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3262 mSDsCounter, 71 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 597 IncrementalHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 71 mSolverCounterUnsat, 1045 mSDtfsCounter, 597 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=456occurred in iteration=7, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 769 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 200 NumberOfCodeBlocks, 200 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 163 ConstructedInterpolants, 0 QuantifiedInterpolants, 417 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 [2021-11-23 12:31:23,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c9ff936057be59b0f479a8c37fd17409fe797633e9a8a05703f5728379735d91 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:31:25,474 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:31:25,477 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:31:25,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:31:25,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:31:25,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:31:25,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:31:25,546 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:31:25,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:31:25,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:31:25,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:31:25,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:31:25,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:31:25,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:31:25,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:31:25,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:31:25,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:31:25,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:31:25,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:31:25,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:31:25,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:31:25,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:31:25,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:31:25,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:31:25,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:31:25,575 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:31:25,575 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:31:25,576 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:31:25,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:31:25,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:31:25,579 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:31:25,580 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:31:25,581 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:31:25,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:31:25,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:31:25,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:31:25,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:31:25,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:31:25,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:31:25,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:31:25,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:31:25,588 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-23 12:31:25,613 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:31:25,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:31:25,614 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:31:25,614 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:31:25,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:31:25,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:31:25,616 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:31:25,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:31:25,616 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:31:25,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:31:25,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:31:25,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:31:25,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:31:25,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:31:25,618 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 12:31:25,618 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 12:31:25,618 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 12:31:25,619 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:31:25,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:31:25,619 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:31:25,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:31:25,620 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:31:25,620 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:31:25,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:31:25,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:31:25,621 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:31:25,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:31:25,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:31:25,622 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-23 12:31:25,622 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 12:31:25,622 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:31:25,622 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:31:25,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:31:25,623 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:31:25,623 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 12:31:25,623 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_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9ff936057be59b0f479a8c37fd17409fe797633e9a8a05703f5728379735d91 [2021-11-23 12:31:26,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:31:26,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:31:26,071 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:31:26,072 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:31:26,073 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:31:26,074 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c [2021-11-23 12:31:26,148 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/data/28c947d6d/9234a1b854354104b5c4be588e0813bf/FLAG70761ee25 [2021-11-23 12:31:26,681 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:31:26,682 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c [2021-11-23 12:31:26,690 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/data/28c947d6d/9234a1b854354104b5c4be588e0813bf/FLAG70761ee25 [2021-11-23 12:31:27,055 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/data/28c947d6d/9234a1b854354104b5c4be588e0813bf [2021-11-23 12:31:27,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:31:27,058 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:31:27,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:31:27,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:31:27,081 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:31:27,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:31:27" (1/1) ... [2021-11-23 12:31:27,083 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@432a7966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:27, skipping insertion in model container [2021-11-23 12:31:27,083 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:31:27" (1/1) ... [2021-11-23 12:31:27,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:31:27,128 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:31:27,297 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_1154c6c8-5058-4a65-a5cf-f17829ddbf99/sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c[755,768] [2021-11-23 12:31:27,433 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:31:27,451 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:31:27,469 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_1154c6c8-5058-4a65-a5cf-f17829ddbf99/sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c[755,768] [2021-11-23 12:31:27,525 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:31:27,551 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:31:27,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:27 WrapperNode [2021-11-23 12:31:27,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:31:27,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:31:27,553 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:31:27,553 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:31:27,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:27" (1/1) ... [2021-11-23 12:31:27,592 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:27" (1/1) ... [2021-11-23 12:31:27,638 INFO L137 Inliner]: procedures = 17, calls = 18, calls flagged for inlining = 13, calls inlined = 11, statements flattened = 296 [2021-11-23 12:31:27,641 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:31:27,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:31:27,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:31:27,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:31:27,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:27" (1/1) ... [2021-11-23 12:31:27,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:27" (1/1) ... [2021-11-23 12:31:27,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:27" (1/1) ... [2021-11-23 12:31:27,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:27" (1/1) ... [2021-11-23 12:31:27,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:27" (1/1) ... [2021-11-23 12:31:27,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:27" (1/1) ... [2021-11-23 12:31:27,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:27" (1/1) ... [2021-11-23 12:31:27,708 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:31:27,715 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:31:27,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:31:27,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:31:27,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:27" (1/1) ... [2021-11-23 12:31:27,723 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:31:27,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:31:27,746 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:31:27,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:31:27,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:31:27,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 12:31:27,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:31:27,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:31:27,866 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:31:27,867 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:31:28,256 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:31:28,265 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:31:28,265 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-23 12:31:28,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:31:28 BoogieIcfgContainer [2021-11-23 12:31:28,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:31:28,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:31:28,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:31:28,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:31:28,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:31:27" (1/3) ... [2021-11-23 12:31:28,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5852c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:31:28, skipping insertion in model container [2021-11-23 12:31:28,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:27" (2/3) ... [2021-11-23 12:31:28,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5852c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:31:28, skipping insertion in model container [2021-11-23 12:31:28,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:31:28" (3/3) ... [2021-11-23 12:31:28,286 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-2a.c.cil.c [2021-11-23 12:31:28,291 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:31:28,291 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-23 12:31:28,342 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:31:28,349 INFO L339 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=PETRI_NET, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 12:31:28,349 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-23 12:31:28,366 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 91 states have (on average 1.7032967032967032) internal successors, (155), 96 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:28,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 12:31:28,372 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:28,373 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:31:28,373 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:31:28,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:28,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1626643796, now seen corresponding path program 1 times [2021-11-23 12:31:28,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:31:28,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1781854883] [2021-11-23 12:31:28,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:28,392 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:31:28,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:31:28,395 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:31:28,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 12:31:28,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:28,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 12:31:28,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:28,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:28,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:31:28,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:28,775 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:31:28,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1781854883] [2021-11-23 12:31:28,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1781854883] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:28,776 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:28,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-23 12:31:28,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370117968] [2021-11-23 12:31:28,779 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:28,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:31:28,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:31:28,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:31:28,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:31:28,838 INFO L87 Difference]: Start difference. First operand has 97 states, 91 states have (on average 1.7032967032967032) internal successors, (155), 96 states have internal predecessors, (155), 0 states have call successors, (0), 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 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:29,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:29,159 INFO L93 Difference]: Finished difference Result 402 states and 612 transitions. [2021-11-23 12:31:29,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 12:31:29,163 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-23 12:31:29,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:29,180 INFO L225 Difference]: With dead ends: 402 [2021-11-23 12:31:29,181 INFO L226 Difference]: Without dead ends: 295 [2021-11-23 12:31:29,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 12:31:29,195 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 533 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:29,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [533 Valid, 484 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:31:29,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-11-23 12:31:29,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 120. [2021-11-23 12:31:29,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 115 states have (on average 1.4956521739130435) internal successors, (172), 119 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:29,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 172 transitions. [2021-11-23 12:31:29,252 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 172 transitions. Word has length 18 [2021-11-23 12:31:29,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:29,253 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 172 transitions. [2021-11-23 12:31:29,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:29,253 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 172 transitions. [2021-11-23 12:31:29,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 12:31:29,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:29,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:31:29,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:29,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:31:29,466 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:31:29,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:29,467 INFO L85 PathProgramCache]: Analyzing trace with hash -908455500, now seen corresponding path program 1 times [2021-11-23 12:31:29,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:31:29,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1375160108] [2021-11-23 12:31:29,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:29,468 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:31:29,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:31:29,470 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:31:29,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 12:31:29,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:29,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 12:31:29,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:29,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:29,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:31:29,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:29,659 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:31:29,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1375160108] [2021-11-23 12:31:29,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1375160108] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:29,660 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:29,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-23 12:31:29,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515020589] [2021-11-23 12:31:29,660 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:29,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:31:29,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:31:29,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:31:29,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:31:29,663 INFO L87 Difference]: Start difference. First operand 120 states and 172 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:29,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:29,853 INFO L93 Difference]: Finished difference Result 394 states and 543 transitions. [2021-11-23 12:31:29,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 12:31:29,854 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-23 12:31:29,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:29,857 INFO L225 Difference]: With dead ends: 394 [2021-11-23 12:31:29,857 INFO L226 Difference]: Without dead ends: 337 [2021-11-23 12:31:29,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 12:31:29,860 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 476 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:29,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [476 Valid, 443 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:31:29,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-11-23 12:31:29,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 188. [2021-11-23 12:31:29,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 183 states have (on average 1.4754098360655739) internal successors, (270), 187 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:29,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 270 transitions. [2021-11-23 12:31:29,887 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 270 transitions. Word has length 22 [2021-11-23 12:31:29,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:29,888 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 270 transitions. [2021-11-23 12:31:29,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:29,888 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 270 transitions. [2021-11-23 12:31:29,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 12:31:29,890 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:29,890 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:31:29,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:30,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:31:30,104 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:31:30,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:30,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1301482510, now seen corresponding path program 1 times [2021-11-23 12:31:30,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:31:30,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99116197] [2021-11-23 12:31:30,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:30,106 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:31:30,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:31:30,107 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:31:30,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 12:31:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:30,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 12:31:30,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:30,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:30,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:31:30,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:30,323 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:31:30,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [99116197] [2021-11-23 12:31:30,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [99116197] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:30,323 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:30,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-23 12:31:30,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070920954] [2021-11-23 12:31:30,324 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:30,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:31:30,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:31:30,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:31:30,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:31:30,326 INFO L87 Difference]: Start difference. First operand 188 states and 270 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:30,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:30,485 INFO L93 Difference]: Finished difference Result 384 states and 538 transitions. [2021-11-23 12:31:30,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:31:30,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-23 12:31:30,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:30,488 INFO L225 Difference]: With dead ends: 384 [2021-11-23 12:31:30,489 INFO L226 Difference]: Without dead ends: 299 [2021-11-23 12:31:30,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:31:30,491 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 226 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:30,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 463 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:31:30,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-11-23 12:31:30,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 284. [2021-11-23 12:31:30,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 279 states have (on average 1.4480286738351253) internal successors, (404), 283 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:30,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 404 transitions. [2021-11-23 12:31:30,547 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 404 transitions. Word has length 22 [2021-11-23 12:31:30,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:30,548 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 404 transitions. [2021-11-23 12:31:30,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:30,548 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 404 transitions. [2021-11-23 12:31:30,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 12:31:30,552 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:30,553 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:31:30,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:30,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:31:30,765 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:31:30,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:30,765 INFO L85 PathProgramCache]: Analyzing trace with hash 473524852, now seen corresponding path program 1 times [2021-11-23 12:31:30,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:31:30,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1266722269] [2021-11-23 12:31:30,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:30,766 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:31:30,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:31:30,767 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:31:30,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 12:31:30,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:30,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 12:31:30,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:30,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:30,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:31:30,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:30,987 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:31:30,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1266722269] [2021-11-23 12:31:30,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1266722269] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:30,992 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:30,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-23 12:31:30,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723574766] [2021-11-23 12:31:30,993 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:30,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:31:30,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:31:30,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:31:30,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:31:30,995 INFO L87 Difference]: Start difference. First operand 284 states and 404 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:31,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:31,148 INFO L93 Difference]: Finished difference Result 407 states and 563 transitions. [2021-11-23 12:31:31,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 12:31:31,149 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-23 12:31:31,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:31,152 INFO L225 Difference]: With dead ends: 407 [2021-11-23 12:31:31,152 INFO L226 Difference]: Without dead ends: 328 [2021-11-23 12:31:31,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-23 12:31:31,154 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 259 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:31,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 578 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:31:31,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-11-23 12:31:31,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 264. [2021-11-23 12:31:31,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 259 states have (on average 1.4285714285714286) internal successors, (370), 263 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:31,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 370 transitions. [2021-11-23 12:31:31,191 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 370 transitions. Word has length 22 [2021-11-23 12:31:31,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:31,191 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 370 transitions. [2021-11-23 12:31:31,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:31,192 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 370 transitions. [2021-11-23 12:31:31,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 12:31:31,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:31,196 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:31:31,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:31,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:31:31,407 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:31:31,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:31,408 INFO L85 PathProgramCache]: Analyzing trace with hash 177561437, now seen corresponding path program 1 times [2021-11-23 12:31:31,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:31:31,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1642614328] [2021-11-23 12:31:31,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:31,409 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:31:31,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:31:31,411 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:31:31,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 12:31:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:31,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 12:31:31,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:31,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:31,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:31:31,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:31,650 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:31:31,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1642614328] [2021-11-23 12:31:31,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1642614328] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:31,650 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:31,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-23 12:31:31,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776095043] [2021-11-23 12:31:31,651 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:31,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 12:31:31,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:31:31,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 12:31:31,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:31:31,652 INFO L87 Difference]: Start difference. First operand 264 states and 370 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:31,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:31,941 INFO L93 Difference]: Finished difference Result 412 states and 551 transitions. [2021-11-23 12:31:31,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 12:31:31,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-23 12:31:31,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:31,944 INFO L225 Difference]: With dead ends: 412 [2021-11-23 12:31:31,944 INFO L226 Difference]: Without dead ends: 364 [2021-11-23 12:31:31,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-11-23 12:31:31,946 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 602 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:31,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 781 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:31:31,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2021-11-23 12:31:31,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 254. [2021-11-23 12:31:31,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 249 states have (on average 1.4216867469879517) internal successors, (354), 253 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:31,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 354 transitions. [2021-11-23 12:31:31,962 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 354 transitions. Word has length 26 [2021-11-23 12:31:31,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:31,962 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 354 transitions. [2021-11-23 12:31:31,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:31,963 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 354 transitions. [2021-11-23 12:31:31,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-23 12:31:31,964 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:31,965 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:31:31,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:32,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:31:32,176 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:31:32,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:32,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1868481670, now seen corresponding path program 1 times [2021-11-23 12:31:32,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:31:32,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1170184621] [2021-11-23 12:31:32,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:32,177 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:31:32,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:31:32,178 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:31:32,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 12:31:32,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:32,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:31:32,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:32,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:32,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:31:32,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:32,367 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:31:32,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1170184621] [2021-11-23 12:31:32,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1170184621] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:32,367 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:32,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 12:31:32,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056495182] [2021-11-23 12:31:32,368 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:32,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:31:32,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:31:32,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:31:32,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:31:32,371 INFO L87 Difference]: Start difference. First operand 254 states and 354 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:32,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:32,422 INFO L93 Difference]: Finished difference Result 462 states and 641 transitions. [2021-11-23 12:31:32,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:31:32,423 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-23 12:31:32,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:32,425 INFO L225 Difference]: With dead ends: 462 [2021-11-23 12:31:32,429 INFO L226 Difference]: Without dead ends: 379 [2021-11-23 12:31:32,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:31:32,436 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 202 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:32,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 602 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:31:32,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-11-23 12:31:32,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 312. [2021-11-23 12:31:32,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 307 states have (on average 1.3778501628664495) internal successors, (423), 311 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:32,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 423 transitions. [2021-11-23 12:31:32,455 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 423 transitions. Word has length 30 [2021-11-23 12:31:32,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:32,455 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 423 transitions. [2021-11-23 12:31:32,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:32,456 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 423 transitions. [2021-11-23 12:31:32,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-23 12:31:32,458 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:32,458 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:31:32,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:32,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:31:32,675 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:31:32,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:32,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1878814160, now seen corresponding path program 1 times [2021-11-23 12:31:32,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:31:32,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1226940595] [2021-11-23 12:31:32,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:32,676 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:31:32,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:31:32,679 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:31:32,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 12:31:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:32,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-23 12:31:32,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:32,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:32,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:31:32,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:32,909 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:31:32,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1226940595] [2021-11-23 12:31:32,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1226940595] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:32,909 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:32,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 8 [2021-11-23 12:31:32,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390899941] [2021-11-23 12:31:32,910 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:32,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 12:31:32,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:31:32,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 12:31:32,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-23 12:31:32,911 INFO L87 Difference]: Start difference. First operand 312 states and 423 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:33,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:33,453 INFO L93 Difference]: Finished difference Result 918 states and 1262 transitions. [2021-11-23 12:31:33,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 12:31:33,458 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-23 12:31:33,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:33,462 INFO L225 Difference]: With dead ends: 918 [2021-11-23 12:31:33,462 INFO L226 Difference]: Without dead ends: 809 [2021-11-23 12:31:33,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-11-23 12:31:33,464 INFO L933 BasicCegarLoop]: 302 mSDtfsCounter, 528 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 1429 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:33,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [528 Valid, 1429 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 12:31:33,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2021-11-23 12:31:33,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 452. [2021-11-23 12:31:33,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 448 states have (on average 1.3616071428571428) internal successors, (610), 451 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:33,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 610 transitions. [2021-11-23 12:31:33,498 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 610 transitions. Word has length 30 [2021-11-23 12:31:33,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:33,499 INFO L470 AbstractCegarLoop]: Abstraction has 452 states and 610 transitions. [2021-11-23 12:31:33,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:33,499 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 610 transitions. [2021-11-23 12:31:33,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-23 12:31:33,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:33,500 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:31:33,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:33,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:31:33,712 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:31:33,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:33,712 INFO L85 PathProgramCache]: Analyzing trace with hash -318736181, now seen corresponding path program 1 times [2021-11-23 12:31:33,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:31:33,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203667194] [2021-11-23 12:31:33,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:33,713 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:31:33,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:31:33,714 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:31:33,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 12:31:33,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:33,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 12:31:33,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:33,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:33,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:31:34,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:34,041 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:31:34,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203667194] [2021-11-23 12:31:34,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1203667194] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:34,042 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:34,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2021-11-23 12:31:34,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750915858] [2021-11-23 12:31:34,042 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:34,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 12:31:34,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:31:34,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 12:31:34,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-23 12:31:34,043 INFO L87 Difference]: Start difference. First operand 452 states and 610 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:34,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:34,996 INFO L93 Difference]: Finished difference Result 764 states and 1016 transitions. [2021-11-23 12:31:34,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-23 12:31:34,997 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-23 12:31:34,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:35,001 INFO L225 Difference]: With dead ends: 764 [2021-11-23 12:31:35,001 INFO L226 Difference]: Without dead ends: 719 [2021-11-23 12:31:35,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2021-11-23 12:31:35,003 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 859 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:35,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [859 Valid, 1299 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 12:31:35,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2021-11-23 12:31:35,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 448. [2021-11-23 12:31:35,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 444 states have (on average 1.3581081081081081) internal successors, (603), 447 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:35,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 603 transitions. [2021-11-23 12:31:35,039 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 603 transitions. Word has length 31 [2021-11-23 12:31:35,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:35,040 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 603 transitions. [2021-11-23 12:31:35,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:35,040 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 603 transitions. [2021-11-23 12:31:35,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-23 12:31:35,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:35,042 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:31:35,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:35,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:31:35,260 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:31:35,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:35,260 INFO L85 PathProgramCache]: Analyzing trace with hash -261477879, now seen corresponding path program 1 times [2021-11-23 12:31:35,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:31:35,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [581265292] [2021-11-23 12:31:35,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:35,261 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:31:35,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:31:35,262 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:31:35,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-23 12:31:35,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:35,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 12:31:35,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:35,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:35,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:31:35,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:35,413 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:31:35,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [581265292] [2021-11-23 12:31:35,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [581265292] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:35,414 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:35,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 12:31:35,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621649306] [2021-11-23 12:31:35,414 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:35,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:31:35,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:31:35,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:31:35,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:31:35,416 INFO L87 Difference]: Start difference. First operand 448 states and 603 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:35,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:35,488 INFO L93 Difference]: Finished difference Result 505 states and 678 transitions. [2021-11-23 12:31:35,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:31:35,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-23 12:31:35,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:35,492 INFO L225 Difference]: With dead ends: 505 [2021-11-23 12:31:35,492 INFO L226 Difference]: Without dead ends: 500 [2021-11-23 12:31:35,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-23 12:31:35,494 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 47 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:35,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 451 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:31:35,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-11-23 12:31:35,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 448. [2021-11-23 12:31:35,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 444 states have (on average 1.3468468468468469) internal successors, (598), 447 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:35,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 598 transitions. [2021-11-23 12:31:35,524 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 598 transitions. Word has length 31 [2021-11-23 12:31:35,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:35,524 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 598 transitions. [2021-11-23 12:31:35,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:35,525 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 598 transitions. [2021-11-23 12:31:35,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-23 12:31:35,526 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:35,526 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:31:35,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:35,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:31:35,737 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:31:35,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:35,737 INFO L85 PathProgramCache]: Analyzing trace with hash -822665517, now seen corresponding path program 1 times [2021-11-23 12:31:35,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:31:35,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1256107367] [2021-11-23 12:31:35,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:35,738 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:31:35,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:31:35,741 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:31:35,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-23 12:31:35,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:35,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:31:35,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:35,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:35,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:31:35,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:35,922 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:31:35,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1256107367] [2021-11-23 12:31:35,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1256107367] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:35,922 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:35,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 12:31:35,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47654196] [2021-11-23 12:31:35,923 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:35,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:31:35,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:31:35,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:31:35,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:31:35,924 INFO L87 Difference]: Start difference. First operand 448 states and 598 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:36,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:36,006 INFO L93 Difference]: Finished difference Result 905 states and 1182 transitions. [2021-11-23 12:31:36,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:31:36,006 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-23 12:31:36,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:36,011 INFO L225 Difference]: With dead ends: 905 [2021-11-23 12:31:36,011 INFO L226 Difference]: Without dead ends: 840 [2021-11-23 12:31:36,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:31:36,013 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 175 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:36,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 560 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:31:36,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2021-11-23 12:31:36,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 478. [2021-11-23 12:31:36,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 474 states have (on average 1.3459915611814346) internal successors, (638), 477 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:36,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 638 transitions. [2021-11-23 12:31:36,051 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 638 transitions. Word has length 32 [2021-11-23 12:31:36,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:36,052 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 638 transitions. [2021-11-23 12:31:36,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:36,052 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 638 transitions. [2021-11-23 12:31:36,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-23 12:31:36,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:36,054 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:31:36,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:36,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:31:36,265 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:31:36,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:36,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1680341636, now seen corresponding path program 1 times [2021-11-23 12:31:36,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:31:36,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92435065] [2021-11-23 12:31:36,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:36,267 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:31:36,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:31:36,268 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:31:36,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 12:31:36,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:36,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:31:36,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:36,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:36,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:31:36,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:36,436 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:31:36,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92435065] [2021-11-23 12:31:36,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [92435065] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:36,437 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:36,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 12:31:36,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988630574] [2021-11-23 12:31:36,437 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:36,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:31:36,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:31:36,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:31:36,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:31:36,439 INFO L87 Difference]: Start difference. First operand 478 states and 638 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:36,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:36,479 INFO L93 Difference]: Finished difference Result 490 states and 651 transitions. [2021-11-23 12:31:36,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:31:36,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-23 12:31:36,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:36,482 INFO L225 Difference]: With dead ends: 490 [2021-11-23 12:31:36,482 INFO L226 Difference]: Without dead ends: 421 [2021-11-23 12:31:36,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:31:36,483 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 1 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:36,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 372 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:31:36,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-11-23 12:31:36,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 420. [2021-11-23 12:31:36,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 416 states have (on average 1.3557692307692308) internal successors, (564), 419 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:36,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 564 transitions. [2021-11-23 12:31:36,529 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 564 transitions. Word has length 35 [2021-11-23 12:31:36,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:36,530 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 564 transitions. [2021-11-23 12:31:36,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:36,530 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 564 transitions. [2021-11-23 12:31:36,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-23 12:31:36,531 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:36,531 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:31:36,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:36,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:31:36,731 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:31:36,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:36,732 INFO L85 PathProgramCache]: Analyzing trace with hash -976461700, now seen corresponding path program 1 times [2021-11-23 12:31:36,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:31:36,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100143416] [2021-11-23 12:31:36,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:36,732 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:31:36,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:31:36,733 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:31:36,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-23 12:31:36,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:36,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 12:31:36,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:36,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:36,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:31:36,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:36,884 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:31:36,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100143416] [2021-11-23 12:31:36,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [100143416] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:36,884 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:36,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 12:31:36,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604431241] [2021-11-23 12:31:36,885 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:36,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:31:36,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:31:36,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:31:36,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:31:36,886 INFO L87 Difference]: Start difference. First operand 420 states and 564 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:36,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:36,988 INFO L93 Difference]: Finished difference Result 657 states and 853 transitions. [2021-11-23 12:31:36,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:31:36,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-23 12:31:36,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:36,993 INFO L225 Difference]: With dead ends: 657 [2021-11-23 12:31:36,993 INFO L226 Difference]: Without dead ends: 618 [2021-11-23 12:31:36,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:31:36,994 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 159 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 380 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 [2021-11-23 12:31:36,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 380 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:31:36,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2021-11-23 12:31:37,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 432. [2021-11-23 12:31:37,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 428 states have (on average 1.3457943925233644) internal successors, (576), 431 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:37,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 576 transitions. [2021-11-23 12:31:37,040 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 576 transitions. Word has length 36 [2021-11-23 12:31:37,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:37,041 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 576 transitions. [2021-11-23 12:31:37,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:37,041 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 576 transitions. [2021-11-23 12:31:37,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-23 12:31:37,042 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:37,043 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:31:37,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:37,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:31:37,253 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:31:37,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:37,254 INFO L85 PathProgramCache]: Analyzing trace with hash 381809026, now seen corresponding path program 1 times [2021-11-23 12:31:37,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:31:37,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [422273253] [2021-11-23 12:31:37,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:37,255 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:31:37,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:31:37,256 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:31:37,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-23 12:31:37,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:37,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 12:31:37,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:37,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:37,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:31:37,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:37,439 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:31:37,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [422273253] [2021-11-23 12:31:37,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [422273253] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:37,439 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:37,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-23 12:31:37,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049754900] [2021-11-23 12:31:37,440 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:37,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:31:37,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:31:37,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:31:37,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:31:37,441 INFO L87 Difference]: Start difference. First operand 432 states and 576 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:37,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:37,555 INFO L93 Difference]: Finished difference Result 605 states and 785 transitions. [2021-11-23 12:31:37,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 12:31:37,556 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-23 12:31:37,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:37,559 INFO L225 Difference]: With dead ends: 605 [2021-11-23 12:31:37,560 INFO L226 Difference]: Without dead ends: 554 [2021-11-23 12:31:37,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-23 12:31:37,561 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 277 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:37,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 497 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:31:37,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2021-11-23 12:31:37,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 432. [2021-11-23 12:31:37,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 428 states have (on average 1.341121495327103) internal successors, (574), 431 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:37,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 574 transitions. [2021-11-23 12:31:37,598 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 574 transitions. Word has length 36 [2021-11-23 12:31:37,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:37,599 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 574 transitions. [2021-11-23 12:31:37,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:37,599 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 574 transitions. [2021-11-23 12:31:37,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-23 12:31:37,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:37,601 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:31:37,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:37,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:31:37,813 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:31:37,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:37,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1788454639, now seen corresponding path program 1 times [2021-11-23 12:31:37,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:31:37,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1829652373] [2021-11-23 12:31:37,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:37,814 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:31:37,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:31:37,816 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:31:37,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-23 12:31:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:37,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 12:31:37,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:38,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:38,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:31:38,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:38,145 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:31:38,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1829652373] [2021-11-23 12:31:38,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1829652373] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:38,145 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:38,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-23 12:31:38,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438974314] [2021-11-23 12:31:38,145 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:38,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 12:31:38,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:31:38,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 12:31:38,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-23 12:31:38,146 INFO L87 Difference]: Start difference. First operand 432 states and 574 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:39,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:39,270 INFO L93 Difference]: Finished difference Result 887 states and 1137 transitions. [2021-11-23 12:31:39,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-23 12:31:39,271 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-23 12:31:39,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:39,276 INFO L225 Difference]: With dead ends: 887 [2021-11-23 12:31:39,276 INFO L226 Difference]: Without dead ends: 860 [2021-11-23 12:31:39,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2021-11-23 12:31:39,278 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 906 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:39,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [906 Valid, 1311 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 12:31:39,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2021-11-23 12:31:39,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 521. [2021-11-23 12:31:39,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 517 states have (on average 1.332688588007737) internal successors, (689), 520 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:39,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 689 transitions. [2021-11-23 12:31:39,332 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 689 transitions. Word has length 37 [2021-11-23 12:31:39,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:39,332 INFO L470 AbstractCegarLoop]: Abstraction has 521 states and 689 transitions. [2021-11-23 12:31:39,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:39,333 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 689 transitions. [2021-11-23 12:31:39,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-23 12:31:39,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:39,334 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:31:39,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:39,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:31:39,545 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:31:39,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:39,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1996529191, now seen corresponding path program 1 times [2021-11-23 12:31:39,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:31:39,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518695666] [2021-11-23 12:31:39,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:39,546 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:31:39,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:31:39,547 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:31:39,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-23 12:31:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:39,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:31:39,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:39,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:39,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:31:39,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:39,731 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:31:39,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518695666] [2021-11-23 12:31:39,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1518695666] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:39,732 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:39,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 12:31:39,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173884827] [2021-11-23 12:31:39,732 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:39,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:31:39,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:31:39,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:31:39,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:31:39,735 INFO L87 Difference]: Start difference. First operand 521 states and 689 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:39,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:39,791 INFO L93 Difference]: Finished difference Result 592 states and 776 transitions. [2021-11-23 12:31:39,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:31:39,791 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-23 12:31:39,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:39,796 INFO L225 Difference]: With dead ends: 592 [2021-11-23 12:31:39,796 INFO L226 Difference]: Without dead ends: 556 [2021-11-23 12:31:39,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:31:39,799 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 250 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:39,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 346 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:31:39,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-11-23 12:31:39,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 525. [2021-11-23 12:31:39,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 521 states have (on average 1.307101727447217) internal successors, (681), 524 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:39,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 681 transitions. [2021-11-23 12:31:39,859 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 681 transitions. Word has length 37 [2021-11-23 12:31:39,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:39,860 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 681 transitions. [2021-11-23 12:31:39,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:39,860 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 681 transitions. [2021-11-23 12:31:39,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-23 12:31:39,862 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:39,862 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:31:39,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:40,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:31:40,073 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:31:40,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:40,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1875736279, now seen corresponding path program 1 times [2021-11-23 12:31:40,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:31:40,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [566160551] [2021-11-23 12:31:40,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:40,074 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:31:40,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:31:40,075 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:31:40,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:40,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-23 12:31:40,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 12:31:40,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:40,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:40,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:31:40,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:40,398 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:31:40,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [566160551] [2021-11-23 12:31:40,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [566160551] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:40,398 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:40,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-11-23 12:31:40,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286434143] [2021-11-23 12:31:40,399 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:40,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 12:31:40,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:31:40,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 12:31:40,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-23 12:31:40,400 INFO L87 Difference]: Start difference. First operand 525 states and 681 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:41,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:41,055 INFO L93 Difference]: Finished difference Result 1561 states and 1904 transitions. [2021-11-23 12:31:41,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-23 12:31:41,056 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-23 12:31:41,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:41,066 INFO L225 Difference]: With dead ends: 1561 [2021-11-23 12:31:41,066 INFO L226 Difference]: Without dead ends: 1510 [2021-11-23 12:31:41,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2021-11-23 12:31:41,068 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 1254 mSDsluCounter, 1453 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 1689 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:41,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1254 Valid, 1689 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 12:31:41,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1510 states. [2021-11-23 12:31:41,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1510 to 527. [2021-11-23 12:31:41,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 523 states have (on average 1.3040152963671128) internal successors, (682), 526 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:41,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 682 transitions. [2021-11-23 12:31:41,132 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 682 transitions. Word has length 37 [2021-11-23 12:31:41,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:41,132 INFO L470 AbstractCegarLoop]: Abstraction has 527 states and 682 transitions. [2021-11-23 12:31:41,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:41,133 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 682 transitions. [2021-11-23 12:31:41,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-23 12:31:41,134 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:41,134 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:31:41,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-23 12:31:41,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:31:41,345 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:31:41,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:41,346 INFO L85 PathProgramCache]: Analyzing trace with hash -165152465, now seen corresponding path program 1 times [2021-11-23 12:31:41,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:31:41,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [168782328] [2021-11-23 12:31:41,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:41,346 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:31:41,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:31:41,347 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:31:41,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-23 12:31:41,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:41,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 12:31:41,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:41,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:41,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:31:42,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:42,468 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:31:42,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [168782328] [2021-11-23 12:31:42,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [168782328] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:42,468 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:42,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-11-23 12:31:42,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394957774] [2021-11-23 12:31:42,468 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:42,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 12:31:42,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:31:42,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 12:31:42,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-11-23 12:31:42,470 INFO L87 Difference]: Start difference. First operand 527 states and 682 transitions. Second operand has 16 states, 16 states have (on average 3.875) internal successors, (62), 16 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:42,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:42,864 INFO L93 Difference]: Finished difference Result 851 states and 1054 transitions. [2021-11-23 12:31:42,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 12:31:42,865 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 16 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-23 12:31:42,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:42,869 INFO L225 Difference]: With dead ends: 851 [2021-11-23 12:31:42,870 INFO L226 Difference]: Without dead ends: 782 [2021-11-23 12:31:42,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2021-11-23 12:31:42,871 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 141 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 1987 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 167 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:42,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 1987 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 129 Invalid, 0 Unknown, 167 Unchecked, 0.2s Time] [2021-11-23 12:31:42,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2021-11-23 12:31:42,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 527. [2021-11-23 12:31:42,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 523 states have (on average 1.2982791586998088) internal successors, (679), 526 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:42,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 679 transitions. [2021-11-23 12:31:42,923 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 679 transitions. Word has length 37 [2021-11-23 12:31:42,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:42,923 INFO L470 AbstractCegarLoop]: Abstraction has 527 states and 679 transitions. [2021-11-23 12:31:42,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 16 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:42,924 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 679 transitions. [2021-11-23 12:31:42,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-23 12:31:42,925 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:42,925 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:31:42,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:43,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:31:43,136 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:31:43,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:43,136 INFO L85 PathProgramCache]: Analyzing trace with hash -2017952155, now seen corresponding path program 1 times [2021-11-23 12:31:43,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:31:43,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57203549] [2021-11-23 12:31:43,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:43,137 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:31:43,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:31:43,137 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:31:43,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-23 12:31:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:43,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 12:31:43,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:43,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:43,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:31:43,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:43,366 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:31:43,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57203549] [2021-11-23 12:31:43,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [57203549] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:43,366 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:43,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-23 12:31:43,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520696522] [2021-11-23 12:31:43,370 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:43,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:31:43,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:31:43,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:31:43,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:31:43,371 INFO L87 Difference]: Start difference. First operand 527 states and 679 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:43,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:43,604 INFO L93 Difference]: Finished difference Result 905 states and 1123 transitions. [2021-11-23 12:31:43,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 12:31:43,605 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-23 12:31:43,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:43,609 INFO L225 Difference]: With dead ends: 905 [2021-11-23 12:31:43,610 INFO L226 Difference]: Without dead ends: 864 [2021-11-23 12:31:43,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-23 12:31:43,611 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 335 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:43,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 668 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:31:43,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2021-11-23 12:31:43,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 549. [2021-11-23 12:31:43,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 545 states have (on average 1.2954128440366972) internal successors, (706), 548 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:43,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 706 transitions. [2021-11-23 12:31:43,667 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 706 transitions. Word has length 37 [2021-11-23 12:31:43,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:43,668 INFO L470 AbstractCegarLoop]: Abstraction has 549 states and 706 transitions. [2021-11-23 12:31:43,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:43,668 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 706 transitions. [2021-11-23 12:31:43,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-23 12:31:43,669 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:43,669 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:31:43,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:43,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:31:43,880 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:31:43,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:43,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1008432919, now seen corresponding path program 1 times [2021-11-23 12:31:43,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:31:43,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1610116141] [2021-11-23 12:31:43,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:43,882 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:31:43,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:31:43,883 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:31:43,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-23 12:31:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:43,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 12:31:43,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:44,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:44,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:31:44,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:44,777 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:31:44,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1610116141] [2021-11-23 12:31:44,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1610116141] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:44,777 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:44,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-23 12:31:44,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460290343] [2021-11-23 12:31:44,778 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:44,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 12:31:44,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:31:44,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 12:31:44,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-23 12:31:44,779 INFO L87 Difference]: Start difference. First operand 549 states and 706 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:44,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:44,918 INFO L93 Difference]: Finished difference Result 676 states and 853 transitions. [2021-11-23 12:31:44,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 12:31:44,919 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-23 12:31:44,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:44,923 INFO L225 Difference]: With dead ends: 676 [2021-11-23 12:31:44,923 INFO L226 Difference]: Without dead ends: 674 [2021-11-23 12:31:44,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-11-23 12:31:44,924 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 175 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:44,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 896 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 17 Unchecked, 0.0s Time] [2021-11-23 12:31:44,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2021-11-23 12:31:44,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 559. [2021-11-23 12:31:44,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 555 states have (on average 1.29009009009009) internal successors, (716), 558 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:44,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 716 transitions. [2021-11-23 12:31:44,973 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 716 transitions. Word has length 37 [2021-11-23 12:31:44,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:44,973 INFO L470 AbstractCegarLoop]: Abstraction has 559 states and 716 transitions. [2021-11-23 12:31:44,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:44,973 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 716 transitions. [2021-11-23 12:31:44,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-23 12:31:44,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:44,975 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:31:44,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:45,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:31:45,186 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:31:45,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:45,186 INFO L85 PathProgramCache]: Analyzing trace with hash 758918070, now seen corresponding path program 1 times [2021-11-23 12:31:45,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:31:45,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1708953487] [2021-11-23 12:31:45,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:45,187 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:31:45,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:31:45,188 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:31:45,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-23 12:31:45,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:45,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:31:45,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:45,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:45,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:31:45,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:45,351 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:31:45,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1708953487] [2021-11-23 12:31:45,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1708953487] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:45,352 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:45,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 12:31:45,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536896532] [2021-11-23 12:31:45,352 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:45,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:31:45,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:31:45,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:31:45,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:31:45,354 INFO L87 Difference]: Start difference. First operand 559 states and 716 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:45,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:45,433 INFO L93 Difference]: Finished difference Result 930 states and 1170 transitions. [2021-11-23 12:31:45,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:31:45,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-23 12:31:45,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:45,436 INFO L225 Difference]: With dead ends: 930 [2021-11-23 12:31:45,436 INFO L226 Difference]: Without dead ends: 374 [2021-11-23 12:31:45,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:31:45,438 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 30 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:45,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 211 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:31:45,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-11-23 12:31:45,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 345. [2021-11-23 12:31:45,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 341 states have (on average 1.2551319648093842) internal successors, (428), 344 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:45,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 428 transitions. [2021-11-23 12:31:45,477 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 428 transitions. Word has length 37 [2021-11-23 12:31:45,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:45,478 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 428 transitions. [2021-11-23 12:31:45,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:45,478 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 428 transitions. [2021-11-23 12:31:45,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-23 12:31:45,479 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:45,479 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:31:45,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:45,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:31:45,690 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:31:45,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:45,690 INFO L85 PathProgramCache]: Analyzing trace with hash -831345606, now seen corresponding path program 1 times [2021-11-23 12:31:45,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:31:45,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1297224295] [2021-11-23 12:31:45,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:45,691 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:31:45,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:31:45,692 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:31:45,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-23 12:31:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:45,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 12:31:45,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:45,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:45,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:31:45,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:45,959 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:31:45,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1297224295] [2021-11-23 12:31:45,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1297224295] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:45,959 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:45,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-11-23 12:31:45,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850689957] [2021-11-23 12:31:45,960 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:45,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 12:31:45,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:31:45,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 12:31:45,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-23 12:31:45,962 INFO L87 Difference]: Start difference. First operand 345 states and 428 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:46,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:46,365 INFO L93 Difference]: Finished difference Result 907 states and 1073 transitions. [2021-11-23 12:31:46,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 12:31:46,366 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-23 12:31:46,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:46,370 INFO L225 Difference]: With dead ends: 907 [2021-11-23 12:31:46,371 INFO L226 Difference]: Without dead ends: 845 [2021-11-23 12:31:46,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-11-23 12:31:46,372 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 617 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 1729 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:46,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [617 Valid, 1729 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:31:46,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2021-11-23 12:31:46,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 329. [2021-11-23 12:31:46,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 325 states have (on average 1.2492307692307691) internal successors, (406), 328 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:46,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 406 transitions. [2021-11-23 12:31:46,409 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 406 transitions. Word has length 38 [2021-11-23 12:31:46,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:46,409 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 406 transitions. [2021-11-23 12:31:46,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:46,410 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 406 transitions. [2021-11-23 12:31:46,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-23 12:31:46,411 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:46,411 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:31:46,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:46,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:31:46,622 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:31:46,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:46,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1203235904, now seen corresponding path program 1 times [2021-11-23 12:31:46,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:31:46,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1313018771] [2021-11-23 12:31:46,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:46,623 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:31:46,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:31:46,624 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:31:46,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-23 12:31:46,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:46,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 12:31:46,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:54,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:54,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:31:54,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:54,957 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:31:54,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1313018771] [2021-11-23 12:31:54,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1313018771] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:54,957 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:54,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-23 12:31:54,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802948998] [2021-11-23 12:31:54,958 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:54,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 12:31:54,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:31:54,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 12:31:54,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=90, Unknown=3, NotChecked=0, Total=132 [2021-11-23 12:31:54,959 INFO L87 Difference]: Start difference. First operand 329 states and 406 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:55,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:55,506 INFO L93 Difference]: Finished difference Result 498 states and 597 transitions. [2021-11-23 12:31:55,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 12:31:55,507 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-23 12:31:55,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:55,509 INFO L225 Difference]: With dead ends: 498 [2021-11-23 12:31:55,510 INFO L226 Difference]: Without dead ends: 496 [2021-11-23 12:31:55,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=56, Invalid=151, Unknown=3, NotChecked=0, Total=210 [2021-11-23 12:31:55,511 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 166 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:55,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 1324 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 33 Invalid, 0 Unknown, 37 Unchecked, 0.1s Time] [2021-11-23 12:31:55,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-11-23 12:31:55,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 321. [2021-11-23 12:31:55,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 318 states have (on average 1.2452830188679245) internal successors, (396), 320 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:55,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 396 transitions. [2021-11-23 12:31:55,546 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 396 transitions. Word has length 38 [2021-11-23 12:31:55,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:55,546 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 396 transitions. [2021-11-23 12:31:55,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:55,546 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 396 transitions. [2021-11-23 12:31:55,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-23 12:31:55,547 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:55,547 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:31:55,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:55,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:31:55,758 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:31:55,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:55,759 INFO L85 PathProgramCache]: Analyzing trace with hash -2038532877, now seen corresponding path program 1 times [2021-11-23 12:31:55,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:31:55,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [788163536] [2021-11-23 12:31:55,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:55,759 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:31:55,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:31:55,760 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:31:55,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-23 12:31:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:55,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:31:55,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:55,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:55,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:31:55,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:55,932 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:31:55,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [788163536] [2021-11-23 12:31:55,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [788163536] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:55,932 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:55,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 12:31:55,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116031009] [2021-11-23 12:31:55,932 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:55,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:31:55,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:31:55,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:31:55,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:31:55,933 INFO L87 Difference]: Start difference. First operand 321 states and 396 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:55,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:55,998 INFO L93 Difference]: Finished difference Result 327 states and 401 transitions. [2021-11-23 12:31:55,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:31:55,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-23 12:31:56,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:56,001 INFO L225 Difference]: With dead ends: 327 [2021-11-23 12:31:56,001 INFO L226 Difference]: Without dead ends: 277 [2021-11-23 12:31:56,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:31:56,002 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 1 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:56,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 315 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:31:56,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-11-23 12:31:56,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 262. [2021-11-23 12:31:56,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 259 states have (on average 1.2393822393822393) internal successors, (321), 261 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:56,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 321 transitions. [2021-11-23 12:31:56,027 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 321 transitions. Word has length 39 [2021-11-23 12:31:56,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:56,028 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 321 transitions. [2021-11-23 12:31:56,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:56,028 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 321 transitions. [2021-11-23 12:31:56,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-23 12:31:56,029 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:56,029 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:31:56,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:56,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:31:56,240 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:31:56,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:56,240 INFO L85 PathProgramCache]: Analyzing trace with hash -303997647, now seen corresponding path program 1 times [2021-11-23 12:31:56,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:31:56,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [423943468] [2021-11-23 12:31:56,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:56,241 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:31:56,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:31:56,242 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:31:56,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-23 12:31:56,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:56,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 12:31:56,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:56,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:56,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:31:56,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:56,621 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:31:56,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [423943468] [2021-11-23 12:31:56,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [423943468] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:56,621 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:56,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2021-11-23 12:31:56,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453250829] [2021-11-23 12:31:56,622 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:56,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 12:31:56,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:31:56,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 12:31:56,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-23 12:31:56,623 INFO L87 Difference]: Start difference. First operand 262 states and 321 transitions. Second operand has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:57,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:57,969 INFO L93 Difference]: Finished difference Result 729 states and 851 transitions. [2021-11-23 12:31:57,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-23 12:31:57,970 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-23 12:31:57,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:57,975 INFO L225 Difference]: With dead ends: 729 [2021-11-23 12:31:57,975 INFO L226 Difference]: Without dead ends: 602 [2021-11-23 12:31:57,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=241, Invalid=751, Unknown=0, NotChecked=0, Total=992 [2021-11-23 12:31:57,977 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 670 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 1239 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:57,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [670 Valid, 1239 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 12:31:57,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-11-23 12:31:58,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 236. [2021-11-23 12:31:58,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 233 states have (on average 1.2188841201716738) internal successors, (284), 235 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:58,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 284 transitions. [2021-11-23 12:31:58,005 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 284 transitions. Word has length 39 [2021-11-23 12:31:58,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:58,005 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 284 transitions. [2021-11-23 12:31:58,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:58,006 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 284 transitions. [2021-11-23 12:31:58,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-23 12:31:58,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:58,006 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:31:58,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:58,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:31:58,218 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:31:58,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:58,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1569730455, now seen corresponding path program 1 times [2021-11-23 12:31:58,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:31:58,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2059547110] [2021-11-23 12:31:58,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:58,219 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:31:58,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:31:58,220 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:31:58,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-23 12:31:58,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:58,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 12:31:58,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:58,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:58,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:31:58,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:58,437 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:31:58,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2059547110] [2021-11-23 12:31:58,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2059547110] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:58,437 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:58,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-23 12:31:58,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792315644] [2021-11-23 12:31:58,438 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:58,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 12:31:58,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:31:58,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 12:31:58,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 12:31:58,439 INFO L87 Difference]: Start difference. First operand 236 states and 284 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:58,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:58,658 INFO L93 Difference]: Finished difference Result 273 states and 319 transitions. [2021-11-23 12:31:58,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 12:31:58,659 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-23 12:31:58,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:58,660 INFO L225 Difference]: With dead ends: 273 [2021-11-23 12:31:58,660 INFO L226 Difference]: Without dead ends: 271 [2021-11-23 12:31:58,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2021-11-23 12:31:58,661 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 129 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:58,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 694 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:31:58,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-11-23 12:31:58,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 236. [2021-11-23 12:31:58,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 233 states have (on average 1.1974248927038627) internal successors, (279), 235 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:58,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 279 transitions. [2021-11-23 12:31:58,691 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 279 transitions. Word has length 43 [2021-11-23 12:31:58,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:58,692 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 279 transitions. [2021-11-23 12:31:58,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:58,692 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 279 transitions. [2021-11-23 12:31:58,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-23 12:31:58,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:58,693 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:31:58,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:58,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:31:58,903 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:31:58,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:58,904 INFO L85 PathProgramCache]: Analyzing trace with hash 724417916, now seen corresponding path program 1 times [2021-11-23 12:31:58,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:31:58,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1860320866] [2021-11-23 12:31:58,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:58,904 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:31:58,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:31:58,905 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:31:58,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-23 12:31:58,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:58,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-23 12:31:58,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:32:00,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:00,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:32:01,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:01,796 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:32:01,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1860320866] [2021-11-23 12:32:01,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1860320866] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:32:01,797 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:32:01,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-11-23 12:32:01,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346223320] [2021-11-23 12:32:01,797 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:32:01,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-23 12:32:01,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:32:01,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-23 12:32:01,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2021-11-23 12:32:01,799 INFO L87 Difference]: Start difference. First operand 236 states and 279 transitions. Second operand has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:03,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:32:03,445 INFO L93 Difference]: Finished difference Result 457 states and 530 transitions. [2021-11-23 12:32:03,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-23 12:32:03,446 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-23 12:32:03,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:32:03,448 INFO L225 Difference]: With dead ends: 457 [2021-11-23 12:32:03,448 INFO L226 Difference]: Without dead ends: 421 [2021-11-23 12:32:03,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=148, Invalid=974, Unknown=0, NotChecked=0, Total=1122 [2021-11-23 12:32:03,449 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 89 mSDsluCounter, 1844 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 1968 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 335 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:32:03,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 1968 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 76 Invalid, 0 Unknown, 335 Unchecked, 0.2s Time] [2021-11-23 12:32:03,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-11-23 12:32:03,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 266. [2021-11-23 12:32:03,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 263 states have (on average 1.1901140684410647) internal successors, (313), 265 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:03,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 313 transitions. [2021-11-23 12:32:03,488 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 313 transitions. Word has length 45 [2021-11-23 12:32:03,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:32:03,488 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 313 transitions. [2021-11-23 12:32:03,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:03,489 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 313 transitions. [2021-11-23 12:32:03,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-23 12:32:03,489 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:32:03,490 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:32:03,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-23 12:32:03,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:32:03,701 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:32:03,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:32:03,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1977647443, now seen corresponding path program 1 times [2021-11-23 12:32:03,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:32:03,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2127988981] [2021-11-23 12:32:03,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:32:03,702 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:32:03,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:32:03,702 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:32:03,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-23 12:32:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:32:03,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-23 12:32:03,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:32:04,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:04,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:32:06,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:06,096 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:32:06,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2127988981] [2021-11-23 12:32:06,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2127988981] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:32:06,096 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:32:06,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 12] imperfect sequences [] total 23 [2021-11-23 12:32:06,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443047100] [2021-11-23 12:32:06,097 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:32:06,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-23 12:32:06,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:32:06,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-23 12:32:06,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2021-11-23 12:32:06,098 INFO L87 Difference]: Start difference. First operand 266 states and 313 transitions. Second operand has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:06,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:32:06,486 INFO L93 Difference]: Finished difference Result 353 states and 407 transitions. [2021-11-23 12:32:06,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-23 12:32:06,487 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-23 12:32:06,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:32:06,489 INFO L225 Difference]: With dead ends: 353 [2021-11-23 12:32:06,489 INFO L226 Difference]: Without dead ends: 317 [2021-11-23 12:32:06,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2021-11-23 12:32:06,490 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 64 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 187 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:32:06,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 1115 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 187 Unchecked, 0.2s Time] [2021-11-23 12:32:06,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-11-23 12:32:06,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 238. [2021-11-23 12:32:06,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 236 states have (on average 1.1822033898305084) internal successors, (279), 237 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:06,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 279 transitions. [2021-11-23 12:32:06,519 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 279 transitions. Word has length 46 [2021-11-23 12:32:06,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:32:06,520 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 279 transitions. [2021-11-23 12:32:06,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:06,520 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 279 transitions. [2021-11-23 12:32:06,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-23 12:32:06,521 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:32:06,521 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:32:06,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-23 12:32:06,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:32:06,733 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:32:06,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:32:06,733 INFO L85 PathProgramCache]: Analyzing trace with hash -624665663, now seen corresponding path program 1 times [2021-11-23 12:32:06,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:32:06,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760940506] [2021-11-23 12:32:06,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:32:06,734 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:32:06,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:32:06,735 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:32:06,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-23 12:32:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:32:06,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 12:32:06,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:32:07,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:07,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:32:08,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:08,136 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:32:08,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [760940506] [2021-11-23 12:32:08,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [760940506] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:32:08,137 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:32:08,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 10] imperfect sequences [] total 21 [2021-11-23 12:32:08,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509873784] [2021-11-23 12:32:08,137 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:32:08,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-23 12:32:08,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:32:08,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-23 12:32:08,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2021-11-23 12:32:08,138 INFO L87 Difference]: Start difference. First operand 238 states and 279 transitions. Second operand has 21 states, 21 states have (on average 4.0476190476190474) internal successors, (85), 21 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:15,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:32:15,462 INFO L93 Difference]: Finished difference Result 837 states and 922 transitions. [2021-11-23 12:32:15,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-23 12:32:15,463 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.0476190476190474) internal successors, (85), 21 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-23 12:32:15,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:32:15,466 INFO L225 Difference]: With dead ends: 837 [2021-11-23 12:32:15,466 INFO L226 Difference]: Without dead ends: 832 [2021-11-23 12:32:15,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=772, Invalid=3010, Unknown=0, NotChecked=0, Total=3782 [2021-11-23 12:32:15,469 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 795 mSDsluCounter, 2591 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 2796 SdHoareTripleChecker+Invalid, 1199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-23 12:32:15,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [795 Valid, 2796 Invalid, 1199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-23 12:32:15,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2021-11-23 12:32:15,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 250. [2021-11-23 12:32:15,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 248 states have (on average 1.1733870967741935) internal successors, (291), 249 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:15,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 291 transitions. [2021-11-23 12:32:15,498 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 291 transitions. Word has length 49 [2021-11-23 12:32:15,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:32:15,499 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 291 transitions. [2021-11-23 12:32:15,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.0476190476190474) internal successors, (85), 21 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:15,499 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 291 transitions. [2021-11-23 12:32:15,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-23 12:32:15,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:32:15,500 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:32:15,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-23 12:32:15,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:32:15,711 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:32:15,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:32:15,712 INFO L85 PathProgramCache]: Analyzing trace with hash -626512705, now seen corresponding path program 1 times [2021-11-23 12:32:15,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:32:15,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [458640368] [2021-11-23 12:32:15,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:32:15,713 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:32:15,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:32:15,713 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:32:15,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-23 12:32:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:32:15,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 12:32:15,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:32:15,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:15,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:32:15,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:15,948 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:32:15,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [458640368] [2021-11-23 12:32:15,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [458640368] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:32:15,948 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:32:15,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-23 12:32:15,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920935573] [2021-11-23 12:32:15,949 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:32:15,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 12:32:15,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:32:15,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 12:32:15,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 12:32:15,950 INFO L87 Difference]: Start difference. First operand 250 states and 291 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:16,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:32:16,116 INFO L93 Difference]: Finished difference Result 271 states and 310 transitions. [2021-11-23 12:32:16,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 12:32:16,117 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-23 12:32:16,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:32:16,118 INFO L225 Difference]: With dead ends: 271 [2021-11-23 12:32:16,118 INFO L226 Difference]: Without dead ends: 198 [2021-11-23 12:32:16,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-11-23 12:32:16,119 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 101 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:32:16,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 484 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:32:16,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-11-23 12:32:16,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 184. [2021-11-23 12:32:16,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 182 states have (on average 1.1593406593406594) internal successors, (211), 183 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:16,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 211 transitions. [2021-11-23 12:32:16,139 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 211 transitions. Word has length 49 [2021-11-23 12:32:16,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:32:16,139 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 211 transitions. [2021-11-23 12:32:16,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:16,139 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 211 transitions. [2021-11-23 12:32:16,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-23 12:32:16,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:32:16,141 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:32:16,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-23 12:32:16,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:32:16,353 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:32:16,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:32:16,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1391095198, now seen corresponding path program 1 times [2021-11-23 12:32:16,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:32:16,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1947054075] [2021-11-23 12:32:16,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:32:16,354 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:32:16,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:32:16,354 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:32:16,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-23 12:32:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:32:16,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:32:16,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:32:16,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:16,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:32:16,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:16,586 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:32:16,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1947054075] [2021-11-23 12:32:16,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1947054075] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:32:16,587 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:32:16,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 12:32:16,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618815752] [2021-11-23 12:32:16,587 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:32:16,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:32:16,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:32:16,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:32:16,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:32:16,589 INFO L87 Difference]: Start difference. First operand 184 states and 211 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:16,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:32:16,630 INFO L93 Difference]: Finished difference Result 251 states and 282 transitions. [2021-11-23 12:32:16,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:32:16,630 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-23 12:32:16,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:32:16,631 INFO L225 Difference]: With dead ends: 251 [2021-11-23 12:32:16,631 INFO L226 Difference]: Without dead ends: 206 [2021-11-23 12:32:16,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:32:16,632 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 140 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:32:16,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 325 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:32:16,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-11-23 12:32:16,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 146. [2021-11-23 12:32:16,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 144 states have (on average 1.1527777777777777) internal successors, (166), 145 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:16,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 166 transitions. [2021-11-23 12:32:16,652 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 166 transitions. Word has length 50 [2021-11-23 12:32:16,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:32:16,652 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 166 transitions. [2021-11-23 12:32:16,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:16,653 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 166 transitions. [2021-11-23 12:32:16,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-23 12:32:16,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:32:16,654 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:32:16,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-23 12:32:16,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:32:16,856 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:32:16,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:32:16,857 INFO L85 PathProgramCache]: Analyzing trace with hash 532132836, now seen corresponding path program 1 times [2021-11-23 12:32:16,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:32:16,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1103730319] [2021-11-23 12:32:16,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:32:16,857 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:32:16,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:32:16,858 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:32:16,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-23 12:32:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:32:16,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-23 12:32:16,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:32:17,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:17,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:32:18,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:18,202 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:32:18,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1103730319] [2021-11-23 12:32:18,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1103730319] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:32:18,202 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:32:18,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 14] imperfect sequences [] total 19 [2021-11-23 12:32:18,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432828018] [2021-11-23 12:32:18,203 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:32:18,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-23 12:32:18,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:32:18,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-23 12:32:18,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-11-23 12:32:18,204 INFO L87 Difference]: Start difference. First operand 146 states and 166 transitions. Second operand has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 19 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:19,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:32:19,115 INFO L93 Difference]: Finished difference Result 262 states and 289 transitions. [2021-11-23 12:32:19,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-23 12:32:19,116 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 19 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-23 12:32:19,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:32:19,116 INFO L225 Difference]: With dead ends: 262 [2021-11-23 12:32:19,116 INFO L226 Difference]: Without dead ends: 202 [2021-11-23 12:32:19,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=110, Invalid=702, Unknown=0, NotChecked=0, Total=812 [2021-11-23 12:32:19,118 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 159 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 197 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:32:19,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 785 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 190 Invalid, 0 Unknown, 197 Unchecked, 0.3s Time] [2021-11-23 12:32:19,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-11-23 12:32:19,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 142. [2021-11-23 12:32:19,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 140 states have (on average 1.1428571428571428) internal successors, (160), 141 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:19,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 160 transitions. [2021-11-23 12:32:19,140 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 160 transitions. Word has length 50 [2021-11-23 12:32:19,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:32:19,140 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 160 transitions. [2021-11-23 12:32:19,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 19 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:19,141 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 160 transitions. [2021-11-23 12:32:19,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-23 12:32:19,142 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:32:19,142 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:32:19,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-23 12:32:19,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:32:19,354 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:32:19,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:32:19,354 INFO L85 PathProgramCache]: Analyzing trace with hash -777252516, now seen corresponding path program 1 times [2021-11-23 12:32:19,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:32:19,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432779464] [2021-11-23 12:32:19,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:32:19,355 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:32:19,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:32:19,356 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:32:19,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-11-23 12:32:19,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:32:19,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 12:32:19,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:32:19,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:19,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:32:19,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:19,773 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:32:19,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [432779464] [2021-11-23 12:32:19,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [432779464] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:32:19,773 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:32:19,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2021-11-23 12:32:19,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663789626] [2021-11-23 12:32:19,773 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:32:19,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 12:32:19,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:32:19,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 12:32:19,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 12:32:19,775 INFO L87 Difference]: Start difference. First operand 142 states and 160 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:19,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:32:19,967 INFO L93 Difference]: Finished difference Result 160 states and 178 transitions. [2021-11-23 12:32:19,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 12:32:19,968 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-23 12:32:19,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:32:19,969 INFO L225 Difference]: With dead ends: 160 [2021-11-23 12:32:19,969 INFO L226 Difference]: Without dead ends: 114 [2021-11-23 12:32:19,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 90 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-11-23 12:32:19,970 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 74 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:32:19,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 468 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:32:19,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-11-23 12:32:19,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2021-11-23 12:32:19,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 112 states have (on average 1.1339285714285714) internal successors, (127), 113 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:19,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 127 transitions. [2021-11-23 12:32:19,986 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 127 transitions. Word has length 50 [2021-11-23 12:32:19,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:32:19,987 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 127 transitions. [2021-11-23 12:32:19,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:19,987 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 127 transitions. [2021-11-23 12:32:19,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-23 12:32:19,989 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:32:19,989 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:32:20,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-11-23 12:32:20,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:32:20,200 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:32:20,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:32:20,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1799839300, now seen corresponding path program 1 times [2021-11-23 12:32:20,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:32:20,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [53497503] [2021-11-23 12:32:20,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:32:20,201 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:32:20,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:32:20,202 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:32:20,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-23 12:32:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:32:20,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 12:32:20,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:32:23,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:23,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:32:23,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:23,988 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:32:23,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [53497503] [2021-11-23 12:32:23,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [53497503] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:32:23,988 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:32:23,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 20 [2021-11-23 12:32:23,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282006534] [2021-11-23 12:32:23,988 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:32:23,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-23 12:32:23,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:32:23,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-23 12:32:23,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=318, Unknown=1, NotChecked=0, Total=380 [2021-11-23 12:32:23,989 INFO L87 Difference]: Start difference. First operand 114 states and 127 transitions. Second operand has 20 states, 20 states have (on average 3.7) internal successors, (74), 20 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:24,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:32:24,646 INFO L93 Difference]: Finished difference Result 165 states and 178 transitions. [2021-11-23 12:32:24,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 12:32:24,647 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.7) internal successors, (74), 20 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-23 12:32:24,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:32:24,648 INFO L225 Difference]: With dead ends: 165 [2021-11-23 12:32:24,648 INFO L226 Difference]: Without dead ends: 156 [2021-11-23 12:32:24,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=110, Invalid=539, Unknown=1, NotChecked=0, Total=650 [2021-11-23 12:32:24,649 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 126 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 96 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:32:24,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 893 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 138 Invalid, 0 Unknown, 96 Unchecked, 0.2s Time] [2021-11-23 12:32:24,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-23 12:32:24,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 130. [2021-11-23 12:32:24,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 128 states have (on average 1.125) internal successors, (144), 129 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:24,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 144 transitions. [2021-11-23 12:32:24,664 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 144 transitions. Word has length 51 [2021-11-23 12:32:24,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:32:24,665 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 144 transitions. [2021-11-23 12:32:24,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.7) internal successors, (74), 20 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:24,665 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 144 transitions. [2021-11-23 12:32:24,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-23 12:32:24,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:32:24,666 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:32:24,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2021-11-23 12:32:24,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:32:24,868 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:32:24,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:32:24,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1815069626, now seen corresponding path program 1 times [2021-11-23 12:32:24,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:32:24,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883579085] [2021-11-23 12:32:24,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:32:24,869 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:32:24,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:32:24,870 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:32:24,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-11-23 12:32:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:32:24,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-23 12:32:24,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:32:26,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:26,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:32:28,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:28,931 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:32:28,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1883579085] [2021-11-23 12:32:28,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1883579085] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:32:28,932 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:32:28,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 13] imperfect sequences [] total 25 [2021-11-23 12:32:28,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461042465] [2021-11-23 12:32:28,932 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:32:28,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-23 12:32:28,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:32:28,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-23 12:32:28,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2021-11-23 12:32:28,934 INFO L87 Difference]: Start difference. First operand 130 states and 144 transitions. Second operand has 25 states, 25 states have (on average 2.76) internal successors, (69), 25 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:30,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:32:30,068 INFO L93 Difference]: Finished difference Result 157 states and 169 transitions. [2021-11-23 12:32:30,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 12:32:30,070 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.76) internal successors, (69), 25 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-23 12:32:30,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:32:30,070 INFO L225 Difference]: With dead ends: 157 [2021-11-23 12:32:30,071 INFO L226 Difference]: Without dead ends: 139 [2021-11-23 12:32:30,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2021-11-23 12:32:30,072 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 43 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 123 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 12:32:30,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 879 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 127 Invalid, 0 Unknown, 123 Unchecked, 0.6s Time] [2021-11-23 12:32:30,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-23 12:32:30,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 121. [2021-11-23 12:32:30,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 119 states have (on average 1.1260504201680672) internal successors, (134), 120 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:30,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 134 transitions. [2021-11-23 12:32:30,089 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 134 transitions. Word has length 51 [2021-11-23 12:32:30,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:32:30,089 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 134 transitions. [2021-11-23 12:32:30,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.76) internal successors, (69), 25 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:30,089 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 134 transitions. [2021-11-23 12:32:30,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-23 12:32:30,090 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:32:30,090 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:32:30,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-11-23 12:32:30,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:32:30,301 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:32:30,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:32:30,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1940387910, now seen corresponding path program 1 times [2021-11-23 12:32:30,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:32:30,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1500807048] [2021-11-23 12:32:30,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:32:30,302 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:32:30,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:32:30,303 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:32:30,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-11-23 12:32:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:32:30,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-23 12:32:30,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:32:31,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:31,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:32:34,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:34,979 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:32:34,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1500807048] [2021-11-23 12:32:34,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1500807048] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:32:34,979 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:32:34,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 13] imperfect sequences [] total 25 [2021-11-23 12:32:34,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863020267] [2021-11-23 12:32:34,980 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:32:34,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-23 12:32:34,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:32:34,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-23 12:32:34,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2021-11-23 12:32:34,981 INFO L87 Difference]: Start difference. First operand 121 states and 134 transitions. Second operand has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:46,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:32:46,536 INFO L93 Difference]: Finished difference Result 200 states and 210 transitions. [2021-11-23 12:32:46,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-23 12:32:46,537 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-23 12:32:46,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:32:46,538 INFO L225 Difference]: With dead ends: 200 [2021-11-23 12:32:46,538 INFO L226 Difference]: Without dead ends: 167 [2021-11-23 12:32:46,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=508, Invalid=1214, Unknown=0, NotChecked=0, Total=1722 [2021-11-23 12:32:46,539 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 318 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-23 12:32:46,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 1027 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 465 Invalid, 0 Unknown, 40 Unchecked, 1.7s Time] [2021-11-23 12:32:46,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-11-23 12:32:46,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 124. [2021-11-23 12:32:46,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 122 states have (on average 1.1147540983606556) internal successors, (136), 123 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:46,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 136 transitions. [2021-11-23 12:32:46,552 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 136 transitions. Word has length 51 [2021-11-23 12:32:46,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:32:46,553 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 136 transitions. [2021-11-23 12:32:46,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:46,553 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 136 transitions. [2021-11-23 12:32:46,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-23 12:32:46,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:32:46,554 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:32:46,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-11-23 12:32:46,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:32:46,754 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:32:46,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:32:46,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1535722923, now seen corresponding path program 1 times [2021-11-23 12:32:46,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:32:46,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [356418107] [2021-11-23 12:32:46,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:32:46,755 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:32:46,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:32:46,756 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:32:46,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-11-23 12:32:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:32:46,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 12:32:46,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:32:47,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:47,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:32:47,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:47,854 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:32:47,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [356418107] [2021-11-23 12:32:47,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [356418107] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:32:47,855 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:32:47,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 9] imperfect sequences [] total 19 [2021-11-23 12:32:47,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886300888] [2021-11-23 12:32:47,855 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:32:47,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-23 12:32:47,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:32:47,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-23 12:32:47,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-11-23 12:32:47,856 INFO L87 Difference]: Start difference. First operand 124 states and 136 transitions. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:48,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:32:48,288 INFO L93 Difference]: Finished difference Result 140 states and 152 transitions. [2021-11-23 12:32:48,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-23 12:32:48,289 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-23 12:32:48,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:32:48,290 INFO L225 Difference]: With dead ends: 140 [2021-11-23 12:32:48,290 INFO L226 Difference]: Without dead ends: 131 [2021-11-23 12:32:48,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2021-11-23 12:32:48,291 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 97 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:32:48,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 906 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 58 Unchecked, 0.1s Time] [2021-11-23 12:32:48,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-23 12:32:48,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 124. [2021-11-23 12:32:48,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 122 states have (on average 1.1065573770491803) internal successors, (135), 123 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:48,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 135 transitions. [2021-11-23 12:32:48,303 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 135 transitions. Word has length 51 [2021-11-23 12:32:48,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:32:48,304 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 135 transitions. [2021-11-23 12:32:48,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:48,304 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 135 transitions. [2021-11-23 12:32:48,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-23 12:32:48,304 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:32:48,304 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:32:48,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-11-23 12:32:48,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:32:48,505 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:32:48,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:32:48,505 INFO L85 PathProgramCache]: Analyzing trace with hash 888644827, now seen corresponding path program 1 times [2021-11-23 12:32:48,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:32:48,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [674696343] [2021-11-23 12:32:48,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:32:48,506 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:32:48,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:32:48,507 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:32:48,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-11-23 12:32:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:32:48,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 12:32:48,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:32:50,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:50,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:32:51,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:51,378 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:32:51,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [674696343] [2021-11-23 12:32:51,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [674696343] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:32:51,378 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:32:51,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-11-23 12:32:51,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120013816] [2021-11-23 12:32:51,379 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:32:51,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 12:32:51,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:32:51,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 12:32:51,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=202, Unknown=1, NotChecked=0, Total=240 [2021-11-23 12:32:51,380 INFO L87 Difference]: Start difference. First operand 124 states and 135 transitions. Second operand has 16 states, 16 states have (on average 4.75) internal successors, (76), 16 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:51,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:32:51,600 INFO L93 Difference]: Finished difference Result 142 states and 151 transitions. [2021-11-23 12:32:51,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 12:32:51,600 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.75) internal successors, (76), 16 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-23 12:32:51,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:32:51,601 INFO L225 Difference]: With dead ends: 142 [2021-11-23 12:32:51,601 INFO L226 Difference]: Without dead ends: 133 [2021-11-23 12:32:51,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=50, Invalid=255, Unknown=1, NotChecked=0, Total=306 [2021-11-23 12:32:51,602 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 60 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:32:51,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 1031 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 109 Unchecked, 0.1s Time] [2021-11-23 12:32:51,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-11-23 12:32:51,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 107. [2021-11-23 12:32:51,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 105 states have (on average 1.1142857142857143) internal successors, (117), 106 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:51,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 117 transitions. [2021-11-23 12:32:51,614 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 117 transitions. Word has length 52 [2021-11-23 12:32:51,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:32:51,614 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 117 transitions. [2021-11-23 12:32:51,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.75) internal successors, (76), 16 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:51,615 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 117 transitions. [2021-11-23 12:32:51,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-23 12:32:51,615 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:32:51,615 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:32:51,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-11-23 12:32:51,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:32:51,820 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:32:51,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:32:51,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1568703197, now seen corresponding path program 1 times [2021-11-23 12:32:51,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:32:51,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [173128193] [2021-11-23 12:32:51,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:32:51,821 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:32:51,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:32:51,821 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:32:51,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-11-23 12:32:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:32:51,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-23 12:32:51,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:32:53,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:53,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:32:54,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:54,431 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:32:54,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [173128193] [2021-11-23 12:32:54,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [173128193] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:32:54,431 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:32:54,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 22 [2021-11-23 12:32:54,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253003944] [2021-11-23 12:32:54,431 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:32:54,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-23 12:32:54,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:32:54,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-23 12:32:54,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2021-11-23 12:32:54,433 INFO L87 Difference]: Start difference. First operand 107 states and 117 transitions. Second operand has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 22 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:55,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:32:55,193 INFO L93 Difference]: Finished difference Result 131 states and 140 transitions. [2021-11-23 12:32:55,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-23 12:32:55,194 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 22 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-23 12:32:55,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:32:55,194 INFO L225 Difference]: With dead ends: 131 [2021-11-23 12:32:55,194 INFO L226 Difference]: Without dead ends: 85 [2021-11-23 12:32:55,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2021-11-23 12:32:55,196 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 63 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 210 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:32:55,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 1173 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 210 Unchecked, 0.2s Time] [2021-11-23 12:32:55,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-23 12:32:55,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 78. [2021-11-23 12:32:55,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.12987012987013) internal successors, (87), 77 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:55,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2021-11-23 12:32:55,213 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 52 [2021-11-23 12:32:55,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:32:55,214 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2021-11-23 12:32:55,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 22 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:55,214 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2021-11-23 12:32:55,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-23 12:32:55,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:32:55,215 INFO L514 BasicCegarLoop]: 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] [2021-11-23 12:32:55,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-11-23 12:32:55,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:32:55,426 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 12:32:55,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:32:55,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1052782096, now seen corresponding path program 1 times [2021-11-23 12:32:55,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:32:55,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372684997] [2021-11-23 12:32:55,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:32:55,427 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:32:55,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:32:55,427 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:32:55,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-11-23 12:32:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:32:55,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 12:32:55,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:32:55,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:55,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:32:56,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:56,291 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:32:56,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [372684997] [2021-11-23 12:32:56,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [372684997] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:32:56,291 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:32:56,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-11-23 12:32:56,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328806650] [2021-11-23 12:32:56,292 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:32:56,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-23 12:32:56,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:32:56,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-23 12:32:56,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2021-11-23 12:32:56,293 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:56,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:32:56,452 INFO L93 Difference]: Finished difference Result 78 states and 87 transitions. [2021-11-23 12:32:56,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 12:32:56,453 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-23 12:32:56,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:32:56,453 INFO L225 Difference]: With dead ends: 78 [2021-11-23 12:32:56,453 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 12:32:56,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2021-11-23 12:32:56,454 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 24 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:32:56,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 315 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 28 Unchecked, 0.1s Time] [2021-11-23 12:32:56,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 12:32:56,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 12:32:56,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:56,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 12:32:56,455 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2021-11-23 12:32:56,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:32:56,456 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 12:32:56,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:56,456 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 12:32:56,456 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 12:32:56,458 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2021-11-23 12:32:56,459 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2021-11-23 12:32:56,459 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2021-11-23 12:32:56,459 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2021-11-23 12:32:56,460 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2021-11-23 12:32:56,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-11-23 12:32:56,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1154c6c8-5058-4a65-a5cf-f17829ddbf99/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:32:56,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.