./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/soft_float_5.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_5.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e2ed14712276ef93d852dd57eea3c7b7181e3c2171c9e3b42c6c304d01d9b88f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:15:58,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:15:58,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:15:58,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:15:58,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:15:58,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:15:58,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:15:58,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:15:58,150 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:15:58,156 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:15:58,158 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:15:58,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:15:58,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:15:58,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:15:58,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:15:58,176 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:15:58,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:15:58,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:15:58,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:15:58,191 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:15:58,194 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:15:58,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:15:58,200 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:15:58,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:15:58,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:15:58,212 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:15:58,213 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:15:58,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:15:58,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:15:58,218 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:15:58,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:15:58,220 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:15:58,223 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:15:58,224 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:15:58,226 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:15:58,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:15:58,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:15:58,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:15:58,228 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:15:58,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:15:58,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:15:58,232 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-11-03 04:15:58,281 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:15:58,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:15:58,284 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:15:58,285 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:15:58,285 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:15:58,285 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:15:58,286 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:15:58,286 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:15:58,286 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:15:58,286 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:15:58,288 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:15:58,288 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:15:58,288 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:15:58,289 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:15:58,289 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:15:58,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:15:58,291 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:15:58,291 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 04:15:58,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:15:58,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:15:58,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:15:58,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:15:58,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:15:58,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:15:58,293 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-03 04:15:58,293 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:15:58,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:15:58,294 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:15:58,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:15:58,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:15:58,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:15:58,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:15:58,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:15:58,298 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:15:58,298 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:15:58,298 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:15:58,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:15:58,299 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:15:58,299 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:15:58,299 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:15:58,300 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2ed14712276ef93d852dd57eea3c7b7181e3c2171c9e3b42c6c304d01d9b88f [2021-11-03 04:15:58,651 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:15:58,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:15:58,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:15:58,691 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:15:58,691 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:15:58,692 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/bitvector/soft_float_5.c.cil.c [2021-11-03 04:15:58,783 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/data/191186078/5296d06d470c41a6a6e2fac695184bdd/FLAG72c24736d [2021-11-03 04:15:59,364 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:15:59,364 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/sv-benchmarks/c/bitvector/soft_float_5.c.cil.c [2021-11-03 04:15:59,374 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/data/191186078/5296d06d470c41a6a6e2fac695184bdd/FLAG72c24736d [2021-11-03 04:15:59,703 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/data/191186078/5296d06d470c41a6a6e2fac695184bdd [2021-11-03 04:15:59,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:15:59,707 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:15:59,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:15:59,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:15:59,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:15:59,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:15:59" (1/1) ... [2021-11-03 04:15:59,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e208aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:59, skipping insertion in model container [2021-11-03 04:15:59,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:15:59" (1/1) ... [2021-11-03 04:15:59,725 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:15:59,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:15:59,954 WARN L228 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_755d386f-bf3c-4688-955f-a724f9645efc/sv-benchmarks/c/bitvector/soft_float_5.c.cil.c[422,435] [2021-11-03 04:16:00,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:16:00,054 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:16:00,072 WARN L228 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_755d386f-bf3c-4688-955f-a724f9645efc/sv-benchmarks/c/bitvector/soft_float_5.c.cil.c[422,435] [2021-11-03 04:16:00,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:16:00,130 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:16:00,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:16:00 WrapperNode [2021-11-03 04:16:00,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:16:00,132 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:16:00,132 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:16:00,132 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:16:00,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:16:00" (1/1) ... [2021-11-03 04:16:00,155 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:16:00" (1/1) ... [2021-11-03 04:16:00,203 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:16:00,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:16:00,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:16:00,204 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:16:00,212 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:16:00" (1/1) ... [2021-11-03 04:16:00,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:16:00" (1/1) ... [2021-11-03 04:16:00,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:16:00" (1/1) ... [2021-11-03 04:16:00,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:16:00" (1/1) ... [2021-11-03 04:16:00,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:16:00" (1/1) ... [2021-11-03 04:16:00,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:16:00" (1/1) ... [2021-11-03 04:16:00,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:16:00" (1/1) ... [2021-11-03 04:16:00,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:16:00,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:16:00,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:16:00,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:16:00,276 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:16:00" (1/1) ... [2021-11-03 04:16:00,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:16:00,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:16:00,321 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:16:00,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:16:00,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 04:16:00,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:16:00,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:16:00,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:16:01,425 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:16:01,426 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-11-03 04:16:01,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:16:01 BoogieIcfgContainer [2021-11-03 04:16:01,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:16:01,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:16:01,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:16:01,439 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:16:01,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:15:59" (1/3) ... [2021-11-03 04:16:01,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f3cd1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:16:01, skipping insertion in model container [2021-11-03 04:16:01,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:16:00" (2/3) ... [2021-11-03 04:16:01,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f3cd1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:16:01, skipping insertion in model container [2021-11-03 04:16:01,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:16:01" (3/3) ... [2021-11-03 04:16:01,443 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_5.c.cil.c [2021-11-03 04:16:01,449 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:16:01,449 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2021-11-03 04:16:01,497 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:16:01,504 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:16:01,504 INFO L340 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2021-11-03 04:16:01,525 INFO L276 IsEmpty]: Start isEmpty. Operand has 142 states, 95 states have (on average 1.8842105263157896) internal successors, (179), 141 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:01,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 04:16:01,531 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:01,531 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 04:16:01,532 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:16:01,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:01,538 INFO L85 PathProgramCache]: Analyzing trace with hash 636155057, now seen corresponding path program 1 times [2021-11-03 04:16:01,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:16:01,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315240618] [2021-11-03 04:16:01,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:01,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:16:01,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:01,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:01,716 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:16:01,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315240618] [2021-11-03 04:16:01,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315240618] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:01,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:01,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:16:01,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341045880] [2021-11-03 04:16:01,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:16:01,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:16:01,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:16:01,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:16:01,748 INFO L87 Difference]: Start difference. First operand has 142 states, 95 states have (on average 1.8842105263157896) internal successors, (179), 141 states have internal predecessors, (179), 0 states have call successors, (0), 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:01,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:01,804 INFO L93 Difference]: Finished difference Result 265 states and 333 transitions. [2021-11-03 04:16:01,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:16:01,806 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-03 04:16:01,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:01,821 INFO L225 Difference]: With dead ends: 265 [2021-11-03 04:16:01,822 INFO L226 Difference]: Without dead ends: 138 [2021-11-03 04:16:01,826 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:16:01,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-03 04:16:01,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2021-11-03 04:16:01,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 94 states have (on average 1.7234042553191489) internal successors, (162), 137 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:01,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2021-11-03 04:16:01,893 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 6 [2021-11-03 04:16:01,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:01,894 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2021-11-03 04:16:01,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:01,894 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2021-11-03 04:16:01,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 04:16:01,896 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:01,896 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 04:16:01,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 04:16:01,896 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:16:01,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:01,900 INFO L85 PathProgramCache]: Analyzing trace with hash 634839001, now seen corresponding path program 1 times [2021-11-03 04:16:01,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:16:01,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723738039] [2021-11-03 04:16:01,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:01,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:16:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:01,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:01,995 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:16:01,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723738039] [2021-11-03 04:16:01,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723738039] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:01,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:01,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-03 04:16:01,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200572136] [2021-11-03 04:16:02,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:16:02,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:16:02,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:16:02,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:16:02,003 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:02,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:02,254 INFO L93 Difference]: Finished difference Result 288 states and 342 transitions. [2021-11-03 04:16:02,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:16:02,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-03 04:16:02,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:02,261 INFO L225 Difference]: With dead ends: 288 [2021-11-03 04:16:02,261 INFO L226 Difference]: Without dead ends: 168 [2021-11-03 04:16:02,263 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:16:02,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-11-03 04:16:02,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 164. [2021-11-03 04:16:02,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 120 states have (on average 1.5833333333333333) internal successors, (190), 163 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:02,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 190 transitions. [2021-11-03 04:16:02,291 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 190 transitions. Word has length 6 [2021-11-03 04:16:02,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:02,292 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 190 transitions. [2021-11-03 04:16:02,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:02,292 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 190 transitions. [2021-11-03 04:16:02,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 04:16:02,294 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:02,294 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:02,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 04:16:02,294 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:16:02,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:02,296 INFO L85 PathProgramCache]: Analyzing trace with hash -804054398, now seen corresponding path program 1 times [2021-11-03 04:16:02,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:16:02,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162465532] [2021-11-03 04:16:02,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:02,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:16:02,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:02,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:02,409 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:16:02,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162465532] [2021-11-03 04:16:02,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162465532] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:02,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:02,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:16:02,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248428966] [2021-11-03 04:16:02,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:16:02,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:16:02,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:16:02,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:16:02,415 INFO L87 Difference]: Start difference. First operand 164 states and 190 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:02,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:02,483 INFO L93 Difference]: Finished difference Result 289 states and 334 transitions. [2021-11-03 04:16:02,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:16:02,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-03 04:16:02,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:02,485 INFO L225 Difference]: With dead ends: 289 [2021-11-03 04:16:02,486 INFO L226 Difference]: Without dead ends: 127 [2021-11-03 04:16:02,490 INFO L786 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 [2021-11-03 04:16:02,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-03 04:16:02,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-11-03 04:16:02,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 91 states have (on average 1.6043956043956045) internal successors, (146), 126 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:02,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 146 transitions. [2021-11-03 04:16:02,508 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 146 transitions. Word has length 9 [2021-11-03 04:16:02,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:02,508 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 146 transitions. [2021-11-03 04:16:02,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:02,509 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 146 transitions. [2021-11-03 04:16:02,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-03 04:16:02,514 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:02,515 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:02,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 04:16:02,515 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:16:02,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:02,516 INFO L85 PathProgramCache]: Analyzing trace with hash -164912703, now seen corresponding path program 1 times [2021-11-03 04:16:02,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:16:02,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940676421] [2021-11-03 04:16:02,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:02,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:16:02,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:02,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:02,597 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:16:02,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940676421] [2021-11-03 04:16:02,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940676421] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:02,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:02,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:16:02,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082158100] [2021-11-03 04:16:02,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:16:02,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:16:02,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:16:02,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:16:02,607 INFO L87 Difference]: Start difference. First operand 127 states and 146 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:02,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:02,729 INFO L93 Difference]: Finished difference Result 178 states and 201 transitions. [2021-11-03 04:16:02,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:16:02,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-03 04:16:02,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:02,731 INFO L225 Difference]: With dead ends: 178 [2021-11-03 04:16:02,731 INFO L226 Difference]: Without dead ends: 171 [2021-11-03 04:16:02,732 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:16:02,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-11-03 04:16:02,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 128. [2021-11-03 04:16:02,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 97 states have (on average 1.5257731958762886) internal successors, (148), 127 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:02,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 148 transitions. [2021-11-03 04:16:02,745 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 148 transitions. Word has length 10 [2021-11-03 04:16:02,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:02,745 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 148 transitions. [2021-11-03 04:16:02,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:02,746 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 148 transitions. [2021-11-03 04:16:02,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 04:16:02,747 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:02,747 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:02,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 04:16:02,748 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:16:02,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:02,748 INFO L85 PathProgramCache]: Analyzing trace with hash -817326280, now seen corresponding path program 1 times [2021-11-03 04:16:02,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:16:02,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462214901] [2021-11-03 04:16:02,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:02,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:16:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:02,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:02,785 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:16:02,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462214901] [2021-11-03 04:16:02,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462214901] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:02,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:02,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:16:02,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628224553] [2021-11-03 04:16:02,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:16:02,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:16:02,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:16:02,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:16:02,788 INFO L87 Difference]: Start difference. First operand 128 states and 148 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:02,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:02,902 INFO L93 Difference]: Finished difference Result 169 states and 190 transitions. [2021-11-03 04:16:02,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:16:02,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-03 04:16:02,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:02,904 INFO L225 Difference]: With dead ends: 169 [2021-11-03 04:16:02,905 INFO L226 Difference]: Without dead ends: 163 [2021-11-03 04:16:02,905 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:16:02,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-03 04:16:02,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 123. [2021-11-03 04:16:02,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 96 states have (on average 1.5) internal successors, (144), 122 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) [2021-11-03 04:16:02,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 144 transitions. [2021-11-03 04:16:02,913 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 144 transitions. Word has length 11 [2021-11-03 04:16:02,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:02,914 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 144 transitions. [2021-11-03 04:16:02,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:02,914 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 144 transitions. [2021-11-03 04:16:02,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 04:16:02,916 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:02,916 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:02,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 04:16:02,917 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:16:02,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:02,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1476576937, now seen corresponding path program 1 times [2021-11-03 04:16:02,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:16:02,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104230311] [2021-11-03 04:16:02,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:02,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:16:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:03,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:03,004 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:16:03,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104230311] [2021-11-03 04:16:03,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104230311] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:03,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:03,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:16:03,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475946823] [2021-11-03 04:16:03,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:16:03,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:16:03,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:16:03,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:16:03,013 INFO L87 Difference]: Start difference. First operand 123 states and 144 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:03,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:03,068 INFO L93 Difference]: Finished difference Result 211 states and 244 transitions. [2021-11-03 04:16:03,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:16:03,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-03 04:16:03,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:03,070 INFO L225 Difference]: With dead ends: 211 [2021-11-03 04:16:03,070 INFO L226 Difference]: Without dead ends: 107 [2021-11-03 04:16:03,070 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:16:03,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-03 04:16:03,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2021-11-03 04:16:03,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 79 states have (on average 1.518987341772152) internal successors, (120), 104 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:03,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2021-11-03 04:16:03,075 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 11 [2021-11-03 04:16:03,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:03,075 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2021-11-03 04:16:03,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:03,076 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2021-11-03 04:16:03,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 04:16:03,080 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:03,081 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:03,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 04:16:03,081 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:16:03,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:03,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1809585668, now seen corresponding path program 1 times [2021-11-03 04:16:03,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:16:03,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891506455] [2021-11-03 04:16:03,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:03,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:16:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:03,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:03,156 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:16:03,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891506455] [2021-11-03 04:16:03,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891506455] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:03,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:03,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:16:03,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992787468] [2021-11-03 04:16:03,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:16:03,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:16:03,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:16:03,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:16:03,165 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:03,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:03,261 INFO L93 Difference]: Finished difference Result 240 states and 271 transitions. [2021-11-03 04:16:03,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:16:03,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-03 04:16:03,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:03,262 INFO L225 Difference]: With dead ends: 240 [2021-11-03 04:16:03,262 INFO L226 Difference]: Without dead ends: 153 [2021-11-03 04:16:03,263 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:16:03,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-03 04:16:03,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 115. [2021-11-03 04:16:03,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 89 states have (on average 1.4831460674157304) internal successors, (132), 114 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:03,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 132 transitions. [2021-11-03 04:16:03,271 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 132 transitions. Word has length 13 [2021-11-03 04:16:03,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:03,271 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 132 transitions. [2021-11-03 04:16:03,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:03,272 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 132 transitions. [2021-11-03 04:16:03,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-03 04:16:03,273 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:03,273 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:03,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 04:16:03,276 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:16:03,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:03,276 INFO L85 PathProgramCache]: Analyzing trace with hash -262580676, now seen corresponding path program 1 times [2021-11-03 04:16:03,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:16:03,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366663020] [2021-11-03 04:16:03,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:03,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:16:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:03,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:03,343 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:16:03,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366663020] [2021-11-03 04:16:03,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366663020] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:03,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:03,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:16:03,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114856892] [2021-11-03 04:16:03,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:16:03,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:16:03,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:16:03,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:16:03,346 INFO L87 Difference]: Start difference. First operand 115 states and 132 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:03,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:03,425 INFO L93 Difference]: Finished difference Result 150 states and 167 transitions. [2021-11-03 04:16:03,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:16:03,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-03 04:16:03,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:03,427 INFO L225 Difference]: With dead ends: 150 [2021-11-03 04:16:03,428 INFO L226 Difference]: Without dead ends: 149 [2021-11-03 04:16:03,428 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:16:03,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-11-03 04:16:03,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 114. [2021-11-03 04:16:03,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 89 states have (on average 1.4606741573033708) internal successors, (130), 113 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:03,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2021-11-03 04:16:03,433 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 14 [2021-11-03 04:16:03,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:03,434 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2021-11-03 04:16:03,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:03,434 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2021-11-03 04:16:03,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:16:03,435 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:03,435 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:03,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-03 04:16:03,435 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:16:03,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:03,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1771692285, now seen corresponding path program 1 times [2021-11-03 04:16:03,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:16:03,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435045728] [2021-11-03 04:16:03,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:03,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:16:03,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:03,466 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 04:16:03,466 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:16:03,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435045728] [2021-11-03 04:16:03,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435045728] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:03,467 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:03,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:16:03,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976576137] [2021-11-03 04:16:03,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:16:03,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:16:03,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:16:03,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:16:03,469 INFO L87 Difference]: Start difference. First operand 114 states and 130 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:03,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:03,564 INFO L93 Difference]: Finished difference Result 202 states and 223 transitions. [2021-11-03 04:16:03,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:16:03,567 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have 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 [2021-11-03 04:16:03,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:03,568 INFO L225 Difference]: With dead ends: 202 [2021-11-03 04:16:03,568 INFO L226 Difference]: Without dead ends: 196 [2021-11-03 04:16:03,569 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:16:03,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-11-03 04:16:03,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 117. [2021-11-03 04:16:03,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 94 states have (on average 1.446808510638298) internal successors, (136), 116 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) [2021-11-03 04:16:03,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 136 transitions. [2021-11-03 04:16:03,574 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 136 transitions. Word has length 18 [2021-11-03 04:16:03,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:03,575 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 136 transitions. [2021-11-03 04:16:03,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:03,576 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 136 transitions. [2021-11-03 04:16:03,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-03 04:16:03,577 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:03,577 INFO L513 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] [2021-11-03 04:16:03,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-03 04:16:03,578 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:16:03,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:03,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1645079183, now seen corresponding path program 1 times [2021-11-03 04:16:03,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:16:03,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894371985] [2021-11-03 04:16:03,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:03,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:16:03,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:03,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:03,690 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:16:03,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894371985] [2021-11-03 04:16:03,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894371985] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:03,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:03,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 04:16:03,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628626977] [2021-11-03 04:16:03,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:16:03,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:16:03,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:16:03,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:16:03,693 INFO L87 Difference]: Start difference. First operand 117 states and 136 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:03,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:03,748 INFO L93 Difference]: Finished difference Result 219 states and 254 transitions. [2021-11-03 04:16:03,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:16:03,749 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-03 04:16:03,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:03,750 INFO L225 Difference]: With dead ends: 219 [2021-11-03 04:16:03,750 INFO L226 Difference]: Without dead ends: 119 [2021-11-03 04:16:03,751 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:16:03,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-03 04:16:03,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 117. [2021-11-03 04:16:03,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 94 states have (on average 1.4361702127659575) internal successors, (135), 116 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) [2021-11-03 04:16:03,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 135 transitions. [2021-11-03 04:16:03,756 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 135 transitions. Word has length 23 [2021-11-03 04:16:03,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:03,757 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 135 transitions. [2021-11-03 04:16:03,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:03,757 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 135 transitions. [2021-11-03 04:16:03,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-03 04:16:03,758 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:03,758 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:03,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-03 04:16:03,759 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:16:03,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:03,759 INFO L85 PathProgramCache]: Analyzing trace with hash 320591046, now seen corresponding path program 1 times [2021-11-03 04:16:03,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:16:03,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903875560] [2021-11-03 04:16:03,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:03,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:16:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:03,812 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:03,813 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:16:03,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903875560] [2021-11-03 04:16:03,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903875560] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:16:03,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287729802] [2021-11-03 04:16:03,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:03,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:16:03,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:16:03,816 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:16:03,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 04:16:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:03,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:16:03,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:16:04,003 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:04,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:16:04,140 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:04,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287729802] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:16:04,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1394392833] [2021-11-03 04:16:04,161 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2021-11-03 04:16:04,161 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:16:04,166 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:16:04,172 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:16:04,172 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:16:04,271 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:04,279 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:16:04,280 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:04,281 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:16:04,282 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:16:04,290 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:04,290 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 04:16:04,299 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-11-03 04:16:04,324 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_9|], 21=[|v_#valid_10|]} [2021-11-03 04:16:04,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:04,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:04,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:04,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-03 04:16:04,373 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:04,374 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:16:04,375 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:04,376 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:16:04,376 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:16:04,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:04,396 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:04,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:04,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:04,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:04,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:04,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:04,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:04,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:04,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:04,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:04,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-03 04:16:04,428 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:04,432 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:16:04,437 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:04,438 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:16:04,439 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:16:04,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:04,456 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:04,465 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:04,469 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-03 04:16:04,471 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:16:04,471 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-11-03 04:16:04,487 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:04,503 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-03 04:16:04,531 INFO L180 QuantifierPusher]: treesize reduction 6, result has 96.2 percent of original size [2021-11-03 04:16:04,540 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-03 04:16:04,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:04,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:04,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:04,769 INFO L180 QuantifierPusher]: treesize reduction 9, result has 97.7 percent of original size [2021-11-03 04:16:04,810 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 393 [2021-11-03 04:16:04,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:04,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:04,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:04,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:04,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:04,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:04,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:04,982 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-03 04:16:04,989 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:16:05,002 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-03 04:16:05,006 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:16:05,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:05,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:05,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:05,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:05,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:05,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:05,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:05,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:05,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:05,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:05,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:05,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:05,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:05,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:05,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:05,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:05,305 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:05,311 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:16:05,317 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:05,367 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:16:05,371 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:05,377 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-11-03 04:16:05,383 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:16:05,387 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:05,395 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-11-03 04:16:05,410 INFO L185 QuantifierPusher]: treesize reduction 36, result has 89.3 percent of original size 302 [2021-11-03 04:16:05,419 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:16:05,420 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:05,423 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-03 04:16:05,425 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-03 04:16:05,431 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:05,435 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-03 04:16:05,444 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:05,450 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 171 [2021-11-03 04:16:05,457 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:16:08,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1394392833] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:08,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:16:08,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [5, 5, 5] total 22 [2021-11-03 04:16:08,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992069337] [2021-11-03 04:16:08,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 04:16:08,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:16:08,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 04:16:08,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-11-03 04:16:08,208 INFO L87 Difference]: Start difference. First operand 117 states and 135 transitions. Second operand has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:09,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:09,577 INFO L93 Difference]: Finished difference Result 215 states and 243 transitions. [2021-11-03 04:16:09,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 04:16:09,581 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-03 04:16:09,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:09,583 INFO L225 Difference]: With dead ends: 215 [2021-11-03 04:16:09,583 INFO L226 Difference]: Without dead ends: 178 [2021-11-03 04:16:09,585 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2021-11-03 04:16:09,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-03 04:16:09,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 136. [2021-11-03 04:16:09,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 113 states have (on average 1.4336283185840708) internal successors, (162), 135 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:09,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 162 transitions. [2021-11-03 04:16:09,599 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 162 transitions. Word has length 25 [2021-11-03 04:16:09,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:09,601 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 162 transitions. [2021-11-03 04:16:09,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:09,601 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 162 transitions. [2021-11-03 04:16:09,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-03 04:16:09,602 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:09,603 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:09,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:16:09,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:16:09,818 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:16:09,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:09,819 INFO L85 PathProgramCache]: Analyzing trace with hash -577545220, now seen corresponding path program 1 times [2021-11-03 04:16:09,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:16:09,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814342940] [2021-11-03 04:16:09,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:09,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:16:09,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:09,870 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:09,871 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:16:09,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814342940] [2021-11-03 04:16:09,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814342940] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:16:09,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913210982] [2021-11-03 04:16:09,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:09,872 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:16:09,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:16:09,873 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:16:09,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 04:16:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:09,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:16:09,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:16:10,045 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:10,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:16:10,157 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:10,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913210982] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:16:10,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [507921179] [2021-11-03 04:16:10,163 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2021-11-03 04:16:10,163 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:16:10,163 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:16:10,163 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:16:10,164 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:16:10,191 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:10,193 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:16:10,193 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:10,194 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:16:10,195 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:16:10,195 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:10,195 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 04:16:10,197 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-11-03 04:16:10,203 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_10|], 21=[|v_#valid_11|]} [2021-11-03 04:16:10,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:10,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:10,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:10,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-03 04:16:10,220 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:10,221 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:16:10,221 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:10,222 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:16:10,222 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:16:10,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:10,228 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:10,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:10,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:10,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:10,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:10,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:10,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:10,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:10,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:10,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:10,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-03 04:16:10,261 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:10,264 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:16:10,265 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:10,265 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:16:10,266 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:16:10,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:10,271 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:10,273 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:10,275 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-03 04:16:10,275 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:16:10,276 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-11-03 04:16:10,283 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:10,287 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-03 04:16:10,301 INFO L180 QuantifierPusher]: treesize reduction 6, result has 96.2 percent of original size [2021-11-03 04:16:10,309 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-03 04:16:10,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:10,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:10,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:10,405 INFO L180 QuantifierPusher]: treesize reduction 9, result has 97.7 percent of original size [2021-11-03 04:16:10,417 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 386 [2021-11-03 04:16:10,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:10,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:10,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:10,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:10,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:10,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:10,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:10,516 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-03 04:16:10,519 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:16:10,527 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-03 04:16:10,530 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:16:10,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:10,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:10,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:10,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:10,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:10,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:10,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:10,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:10,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:10,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:10,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:10,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:10,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:10,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:10,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:10,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:10,782 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:10,786 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:16:10,791 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:10,817 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:16:10,821 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:10,827 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-11-03 04:16:10,838 INFO L185 QuantifierPusher]: treesize reduction 36, result has 89.3 percent of original size 302 [2021-11-03 04:16:10,844 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:16:10,845 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:10,848 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-03 04:16:10,849 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-03 04:16:10,857 INFO L180 QuantifierPusher]: treesize reduction 8, result has 90.1 percent of original size [2021-11-03 04:16:10,859 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 04:16:10,864 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:16:13,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [507921179] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:13,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:16:13,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [5, 5, 5] total 22 [2021-11-03 04:16:13,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248313939] [2021-11-03 04:16:13,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 04:16:13,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:16:13,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 04:16:13,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2021-11-03 04:16:13,519 INFO L87 Difference]: Start difference. First operand 136 states and 162 transitions. Second operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:14,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:14,532 INFO L93 Difference]: Finished difference Result 151 states and 178 transitions. [2021-11-03 04:16:14,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 04:16:14,533 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-03 04:16:14,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:14,534 INFO L225 Difference]: With dead ends: 151 [2021-11-03 04:16:14,534 INFO L226 Difference]: Without dead ends: 149 [2021-11-03 04:16:14,535 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 55 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2021-11-03 04:16:14,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-11-03 04:16:14,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 136. [2021-11-03 04:16:14,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 113 states have (on average 1.4336283185840708) internal successors, (162), 135 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:14,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 162 transitions. [2021-11-03 04:16:14,547 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 162 transitions. Word has length 25 [2021-11-03 04:16:14,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:14,548 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 162 transitions. [2021-11-03 04:16:14,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:14,549 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 162 transitions. [2021-11-03 04:16:14,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-03 04:16:14,550 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:14,550 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:14,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:16:14,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-11-03 04:16:14,770 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:16:14,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:14,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1233044798, now seen corresponding path program 1 times [2021-11-03 04:16:14,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:16:14,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866807656] [2021-11-03 04:16:14,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:14,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:16:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:14,821 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:14,821 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:16:14,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866807656] [2021-11-03 04:16:14,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866807656] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:16:14,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150839006] [2021-11-03 04:16:14,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:14,823 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:16:14,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:16:14,824 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:16:14,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 04:16:14,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:14,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:16:14,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:16:15,008 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:15,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:16:15,134 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:15,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150839006] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:16:15,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1500937081] [2021-11-03 04:16:15,138 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2021-11-03 04:16:15,139 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:16:15,139 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:16:15,139 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:16:15,140 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:16:15,153 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:15,154 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:16:15,155 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:15,155 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 04:16:15,157 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:16:15,158 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:15,158 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:16:15,160 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-11-03 04:16:15,164 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_11|], 21=[|v_#valid_12|]} [2021-11-03 04:16:15,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:15,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:15,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:15,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-03 04:16:15,191 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:15,191 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:16:15,192 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:15,192 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:16:15,193 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:16:15,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:15,200 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:15,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:15,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:15,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:15,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:15,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:15,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:15,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:15,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:15,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:15,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-03 04:16:15,223 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:15,228 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:16:15,229 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:15,229 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:16:15,230 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:16:15,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:15,237 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:15,239 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:15,240 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-03 04:16:15,241 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:16:15,241 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-11-03 04:16:15,248 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:15,253 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-03 04:16:15,264 INFO L180 QuantifierPusher]: treesize reduction 6, result has 96.2 percent of original size [2021-11-03 04:16:15,269 INFO L185 QuantifierPusher]: treesize reduction 8, result has 94.5 percent of original size 137 [2021-11-03 04:16:15,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:15,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:15,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:15,379 INFO L180 QuantifierPusher]: treesize reduction 9, result has 97.7 percent of original size [2021-11-03 04:16:15,393 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 386 [2021-11-03 04:16:15,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:15,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:15,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:15,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:15,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:15,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:15,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:15,519 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-03 04:16:15,527 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:16:15,533 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-03 04:16:15,538 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:16:15,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:15,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:15,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:15,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:15,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:15,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:15,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:15,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:15,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:15,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:15,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:15,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:15,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:15,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:15,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:15,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:15,880 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:15,883 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:16:15,888 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:15,925 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:16:15,928 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:15,940 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-11-03 04:16:15,955 INFO L185 QuantifierPusher]: treesize reduction 75, result has 70.6 percent of original size 180 [2021-11-03 04:16:15,963 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:16:15,964 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:15,967 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-03 04:16:15,969 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-03 04:16:15,975 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:15,979 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-03 04:16:15,989 INFO L180 QuantifierPusher]: treesize reduction 8, result has 91.0 percent of original size [2021-11-03 04:16:15,993 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-11-03 04:16:15,997 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:16:18,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1500937081] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:18,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:16:18,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [5, 5, 5] total 24 [2021-11-03 04:16:18,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644482508] [2021-11-03 04:16:18,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 04:16:18,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:16:18,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 04:16:18,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2021-11-03 04:16:18,528 INFO L87 Difference]: Start difference. First operand 136 states and 162 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:19,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:19,872 INFO L93 Difference]: Finished difference Result 254 states and 281 transitions. [2021-11-03 04:16:19,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-03 04:16:19,874 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have 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 [2021-11-03 04:16:19,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:19,876 INFO L225 Difference]: With dead ends: 254 [2021-11-03 04:16:19,876 INFO L226 Difference]: Without dead ends: 251 [2021-11-03 04:16:19,877 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2021-11-03 04:16:19,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-11-03 04:16:19,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 138. [2021-11-03 04:16:19,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 115 states have (on average 1.4260869565217391) internal successors, (164), 137 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:19,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 164 transitions. [2021-11-03 04:16:19,886 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 164 transitions. Word has length 26 [2021-11-03 04:16:19,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:19,887 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 164 transitions. [2021-11-03 04:16:19,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:19,887 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 164 transitions. [2021-11-03 04:16:19,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-03 04:16:19,888 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:19,888 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:19,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:16:20,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-11-03 04:16:20,114 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:16:20,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:20,114 INFO L85 PathProgramCache]: Analyzing trace with hash -724032373, now seen corresponding path program 1 times [2021-11-03 04:16:20,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:16:20,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780662491] [2021-11-03 04:16:20,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:20,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:16:20,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:20,157 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:20,157 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:16:20,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780662491] [2021-11-03 04:16:20,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780662491] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:16:20,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269716194] [2021-11-03 04:16:20,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:20,158 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:16:20,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:16:20,159 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:16:20,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-03 04:16:20,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:20,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:16:20,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:16:20,332 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:20,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:16:20,416 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:20,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269716194] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:16:20,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1572393267] [2021-11-03 04:16:20,424 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2021-11-03 04:16:20,424 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:16:20,424 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:16:20,425 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:16:20,425 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:16:20,438 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:20,439 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:16:20,440 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:20,441 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:16:20,441 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:16:20,442 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:20,442 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 04:16:20,444 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-11-03 04:16:20,447 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_12|], 21=[|v_#valid_13|]} [2021-11-03 04:16:20,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:20,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:20,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:20,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-03 04:16:20,459 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:20,462 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:16:20,463 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:20,463 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:16:20,463 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:16:20,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:20,468 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:20,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:20,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:20,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:20,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:20,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:20,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:20,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:20,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:20,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:20,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-03 04:16:20,495 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:20,497 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:16:20,498 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:20,499 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:16:20,500 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:16:20,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:20,523 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:20,525 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:20,527 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-03 04:16:20,528 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:16:20,528 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-11-03 04:16:20,537 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:20,548 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-03 04:16:20,564 INFO L180 QuantifierPusher]: treesize reduction 6, result has 96.2 percent of original size [2021-11-03 04:16:20,568 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-03 04:16:20,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:20,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:20,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:20,646 INFO L180 QuantifierPusher]: treesize reduction 9, result has 97.7 percent of original size [2021-11-03 04:16:20,665 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 386 [2021-11-03 04:16:20,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:20,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:20,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:20,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:20,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:20,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:20,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:20,742 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-03 04:16:20,744 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:16:20,752 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-03 04:16:20,754 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:16:20,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:20,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:20,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:20,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:20,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:20,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:20,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:20,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:20,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:20,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:20,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:20,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:20,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:20,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:20,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:20,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:20,945 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:20,947 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:16:20,952 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:20,978 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:16:20,981 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:20,986 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-11-03 04:16:21,001 INFO L185 QuantifierPusher]: treesize reduction 75, result has 70.6 percent of original size 180 [2021-11-03 04:16:21,007 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:16:21,008 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:21,012 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-03 04:16:21,013 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-03 04:16:21,022 INFO L180 QuantifierPusher]: treesize reduction 8, result has 90.1 percent of original size [2021-11-03 04:16:21,024 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 04:16:21,034 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:16:23,373 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:16:23,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:16:23,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-11-03 04:16:23,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691667976] [2021-11-03 04:16:23,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 04:16:23,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:16:23,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 04:16:23,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2021-11-03 04:16:23,383 INFO L87 Difference]: Start difference. First operand 138 states and 164 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 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) [2021-11-03 04:16:23,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:23,540 INFO L93 Difference]: Finished difference Result 326 states and 381 transitions. [2021-11-03 04:16:23,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:16:23,541 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 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 26 [2021-11-03 04:16:23,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:23,542 INFO L225 Difference]: With dead ends: 326 [2021-11-03 04:16:23,543 INFO L226 Difference]: Without dead ends: 217 [2021-11-03 04:16:23,543 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2021-11-03 04:16:23,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-03 04:16:23,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 158. [2021-11-03 04:16:23,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 135 states have (on average 1.3925925925925926) internal successors, (188), 157 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:23,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 188 transitions. [2021-11-03 04:16:23,557 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 188 transitions. Word has length 26 [2021-11-03 04:16:23,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:23,560 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 188 transitions. [2021-11-03 04:16:23,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 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) [2021-11-03 04:16:23,560 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 188 transitions. [2021-11-03 04:16:23,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-03 04:16:23,563 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:23,563 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:23,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:16:23,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:16:23,786 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:16:23,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:23,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1594430024, now seen corresponding path program 1 times [2021-11-03 04:16:23,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:16:23,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67286038] [2021-11-03 04:16:23,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:23,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:16:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:23,854 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:23,854 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:16:23,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67286038] [2021-11-03 04:16:23,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67286038] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:16:23,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750098110] [2021-11-03 04:16:23,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:23,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:16:23,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:16:23,862 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:16:23,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-03 04:16:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:23,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-03 04:16:23,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:16:24,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-03 04:16:24,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:16:24,255 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-03 04:16:24,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750098110] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:24,255 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-03 04:16:24,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [5] total 11 [2021-11-03 04:16:24,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582065631] [2021-11-03 04:16:24,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:16:24,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:16:24,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:16:24,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-03 04:16:24,258 INFO L87 Difference]: Start difference. First operand 158 states and 188 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 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) [2021-11-03 04:16:24,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:24,402 INFO L93 Difference]: Finished difference Result 225 states and 263 transitions. [2021-11-03 04:16:24,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:16:24,406 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 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 28 [2021-11-03 04:16:24,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:24,407 INFO L225 Difference]: With dead ends: 225 [2021-11-03 04:16:24,407 INFO L226 Difference]: Without dead ends: 186 [2021-11-03 04:16:24,408 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:16:24,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-03 04:16:24,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 180. [2021-11-03 04:16:24,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 157 states have (on average 1.3694267515923566) internal successors, (215), 179 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:24,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 215 transitions. [2021-11-03 04:16:24,424 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 215 transitions. Word has length 28 [2021-11-03 04:16:24,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:24,424 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 215 transitions. [2021-11-03 04:16:24,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 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) [2021-11-03 04:16:24,424 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 215 transitions. [2021-11-03 04:16:24,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-03 04:16:24,426 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:24,426 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:24,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:16:24,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:16:24,642 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:16:24,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:24,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1599074310, now seen corresponding path program 1 times [2021-11-03 04:16:24,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:16:24,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026227433] [2021-11-03 04:16:24,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:24,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:16:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:24,676 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-03 04:16:24,677 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:16:24,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026227433] [2021-11-03 04:16:24,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026227433] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:24,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:24,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:16:24,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414699852] [2021-11-03 04:16:24,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:16:24,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:16:24,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:16:24,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:16:24,680 INFO L87 Difference]: Start difference. First operand 180 states and 215 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:24,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:24,753 INFO L93 Difference]: Finished difference Result 232 states and 274 transitions. [2021-11-03 04:16:24,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:16:24,753 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-03 04:16:24,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:24,755 INFO L225 Difference]: With dead ends: 232 [2021-11-03 04:16:24,755 INFO L226 Difference]: Without dead ends: 230 [2021-11-03 04:16:24,756 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:16:24,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-11-03 04:16:24,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 182. [2021-11-03 04:16:24,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 160 states have (on average 1.35) internal successors, (216), 181 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:24,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 216 transitions. [2021-11-03 04:16:24,770 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 216 transitions. Word has length 28 [2021-11-03 04:16:24,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:24,770 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 216 transitions. [2021-11-03 04:16:24,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:24,771 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 216 transitions. [2021-11-03 04:16:24,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-03 04:16:24,771 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:24,771 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:24,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-11-03 04:16:24,772 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:16:24,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:24,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1802333480, now seen corresponding path program 1 times [2021-11-03 04:16:24,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:16:24,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107766224] [2021-11-03 04:16:24,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:24,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:16:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:24,801 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-03 04:16:24,801 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:16:24,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107766224] [2021-11-03 04:16:24,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107766224] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:24,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:24,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:16:24,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4957022] [2021-11-03 04:16:24,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:16:24,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:16:24,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:16:24,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:16:24,804 INFO L87 Difference]: Start difference. First operand 182 states and 216 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:24,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:24,899 INFO L93 Difference]: Finished difference Result 225 states and 261 transitions. [2021-11-03 04:16:24,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:16:24,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-03 04:16:24,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:24,902 INFO L225 Difference]: With dead ends: 225 [2021-11-03 04:16:24,903 INFO L226 Difference]: Without dead ends: 222 [2021-11-03 04:16:24,903 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:16:24,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-11-03 04:16:24,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 168. [2021-11-03 04:16:24,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 149 states have (on average 1.3288590604026846) internal successors, (198), 167 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:24,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 198 transitions. [2021-11-03 04:16:24,920 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 198 transitions. Word has length 28 [2021-11-03 04:16:24,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:24,920 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 198 transitions. [2021-11-03 04:16:24,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:24,921 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 198 transitions. [2021-11-03 04:16:24,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-03 04:16:24,921 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:24,922 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:24,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-11-03 04:16:24,922 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:16:24,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:24,923 INFO L85 PathProgramCache]: Analyzing trace with hash 39856601, now seen corresponding path program 1 times [2021-11-03 04:16:24,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:16:24,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190958898] [2021-11-03 04:16:24,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:24,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:16:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:24,976 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:24,977 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:16:24,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190958898] [2021-11-03 04:16:24,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190958898] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:16:24,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074022780] [2021-11-03 04:16:24,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:24,978 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:16:24,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:16:24,982 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:16:25,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-03 04:16:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:25,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:16:25,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:16:25,337 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:25,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:16:25,465 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:25,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074022780] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:16:25,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [128858420] [2021-11-03 04:16:25,468 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2021-11-03 04:16:25,469 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:16:25,469 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:16:25,469 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:16:25,470 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:16:25,482 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:25,483 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:16:25,484 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:25,485 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:16:25,486 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:16:25,486 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:25,487 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 04:16:25,489 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-11-03 04:16:25,492 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 21=[|v_#valid_14|]} [2021-11-03 04:16:25,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:25,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:25,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:25,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-03 04:16:25,508 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:25,508 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:16:25,509 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:25,510 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:16:25,510 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:16:25,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:25,521 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:25,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:25,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:25,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:25,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:25,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:25,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:25,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:25,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:25,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:25,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-03 04:16:25,549 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:25,552 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:16:25,553 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:25,553 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:16:25,554 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:16:25,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:25,559 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:25,561 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:25,563 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-03 04:16:25,564 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:16:25,564 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-11-03 04:16:25,573 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:25,577 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-03 04:16:25,602 INFO L180 QuantifierPusher]: treesize reduction 6, result has 96.2 percent of original size [2021-11-03 04:16:25,607 INFO L185 QuantifierPusher]: treesize reduction 8, result has 94.5 percent of original size 137 [2021-11-03 04:16:25,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:25,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:25,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:25,684 INFO L180 QuantifierPusher]: treesize reduction 9, result has 97.7 percent of original size [2021-11-03 04:16:25,695 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 386 [2021-11-03 04:16:25,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:25,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:25,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:25,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:25,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:25,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:25,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:25,761 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-03 04:16:25,763 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:16:25,770 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-03 04:16:25,774 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:16:25,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:25,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:25,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:25,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:25,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:25,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:25,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:25,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:25,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:25,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:25,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:25,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:25,912 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:25,916 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-03 04:16:25,926 INFO L180 QuantifierPusher]: treesize reduction 8, result has 92.3 percent of original size [2021-11-03 04:16:25,933 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-03 04:16:25,945 INFO L180 QuantifierPusher]: treesize reduction 8, result has 89.7 percent of original size [2021-11-03 04:16:25,950 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-03 04:16:25,955 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:16:28,460 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:16:28,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:16:28,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-11-03 04:16:28,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384341088] [2021-11-03 04:16:28,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 04:16:28,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:16:28,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 04:16:28,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2021-11-03 04:16:28,462 INFO L87 Difference]: Start difference. First operand 168 states and 198 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:29,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:29,111 INFO L93 Difference]: Finished difference Result 290 states and 341 transitions. [2021-11-03 04:16:29,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:16:29,113 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-03 04:16:29,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:29,115 INFO L225 Difference]: With dead ends: 290 [2021-11-03 04:16:29,115 INFO L226 Difference]: Without dead ends: 169 [2021-11-03 04:16:29,116 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 60 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2021-11-03 04:16:29,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-11-03 04:16:29,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 168. [2021-11-03 04:16:29,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 149 states have (on average 1.3020134228187918) internal successors, (194), 167 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:29,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 194 transitions. [2021-11-03 04:16:29,128 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 194 transitions. Word has length 29 [2021-11-03 04:16:29,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:29,129 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 194 transitions. [2021-11-03 04:16:29,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:29,129 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 194 transitions. [2021-11-03 04:16:29,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-03 04:16:29,130 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:29,130 INFO L513 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:29,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:16:29,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2021-11-03 04:16:29,350 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:16:29,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:29,350 INFO L85 PathProgramCache]: Analyzing trace with hash 573127627, now seen corresponding path program 2 times [2021-11-03 04:16:29,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:16:29,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900815236] [2021-11-03 04:16:29,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:29,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:16:29,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:29,446 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:29,447 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:16:29,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900815236] [2021-11-03 04:16:29,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900815236] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:16:29,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146170273] [2021-11-03 04:16:29,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:16:29,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:16:29,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:16:29,449 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:16:29,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-03 04:16:29,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-11-03 04:16:29,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:16:29,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:16:29,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:16:29,740 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:29,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:16:29,923 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:29,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146170273] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:16:29,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1649694691] [2021-11-03 04:16:29,926 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2021-11-03 04:16:29,927 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:16:29,927 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:16:29,927 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:16:29,927 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:16:29,936 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:29,937 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:16:29,937 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:29,937 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 04:16:29,939 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:16:29,939 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:29,940 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:16:29,941 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-11-03 04:16:29,944 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_14|], 21=[|v_#valid_15|]} [2021-11-03 04:16:29,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:29,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:29,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:29,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-03 04:16:29,955 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:29,956 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:16:29,956 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:29,957 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:16:29,957 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:16:29,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:29,961 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:29,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:29,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:29,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:29,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:29,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:29,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:29,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:29,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:29,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:29,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-03 04:16:29,986 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:29,987 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:16:29,988 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:29,989 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:16:29,989 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:16:29,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:29,993 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:29,995 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:29,996 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-03 04:16:29,997 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:16:29,997 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-11-03 04:16:30,005 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:30,015 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-03 04:16:30,028 INFO L180 QuantifierPusher]: treesize reduction 6, result has 96.2 percent of original size [2021-11-03 04:16:30,032 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-03 04:16:30,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:30,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:30,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:30,105 INFO L180 QuantifierPusher]: treesize reduction 9, result has 97.7 percent of original size [2021-11-03 04:16:30,114 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 393 [2021-11-03 04:16:30,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:30,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:30,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:30,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:30,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:30,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:30,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:30,193 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-03 04:16:30,195 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:16:30,205 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-03 04:16:30,207 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:16:30,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:30,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:30,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:30,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:30,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:30,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:30,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:30,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:30,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:30,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:30,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:30,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:30,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:30,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:30,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:30,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:30,403 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:30,404 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:16:30,408 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:30,435 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:16:30,437 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:30,442 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-11-03 04:16:30,453 INFO L185 QuantifierPusher]: treesize reduction 36, result has 89.3 percent of original size 302 [2021-11-03 04:16:30,458 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:16:30,459 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:30,461 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-03 04:16:30,462 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-03 04:16:30,471 INFO L180 QuantifierPusher]: treesize reduction 8, result has 90.1 percent of original size [2021-11-03 04:16:30,472 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 04:16:30,479 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:16:32,839 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:16:32,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:16:32,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2021-11-03 04:16:32,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246938451] [2021-11-03 04:16:32,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 04:16:32,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:16:32,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 04:16:32,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=687, Unknown=0, NotChecked=0, Total=930 [2021-11-03 04:16:32,842 INFO L87 Difference]: Start difference. First operand 168 states and 194 transitions. Second operand has 17 states, 17 states have (on average 5.176470588235294) internal successors, (88), 17 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:33,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:33,101 INFO L93 Difference]: Finished difference Result 415 states and 480 transitions. [2021-11-03 04:16:33,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-03 04:16:33,102 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.176470588235294) internal successors, (88), 17 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have 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 [2021-11-03 04:16:33,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:33,105 INFO L225 Difference]: With dead ends: 415 [2021-11-03 04:16:33,105 INFO L226 Difference]: Without dead ends: 291 [2021-11-03 04:16:33,106 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 113 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=243, Invalid=687, Unknown=0, NotChecked=0, Total=930 [2021-11-03 04:16:33,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-11-03 04:16:33,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 208. [2021-11-03 04:16:33,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 189 states have (on average 1.2804232804232805) internal successors, (242), 207 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:33,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 242 transitions. [2021-11-03 04:16:33,126 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 242 transitions. Word has length 46 [2021-11-03 04:16:33,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:33,126 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 242 transitions. [2021-11-03 04:16:33,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.176470588235294) internal successors, (88), 17 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:33,127 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 242 transitions. [2021-11-03 04:16:33,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 04:16:33,128 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:33,128 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:33,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:16:33,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable154 [2021-11-03 04:16:33,347 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:16:33,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:33,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1912654489, now seen corresponding path program 2 times [2021-11-03 04:16:33,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:16:33,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869268303] [2021-11-03 04:16:33,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:33,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:16:33,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:33,500 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:33,501 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:16:33,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869268303] [2021-11-03 04:16:33,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869268303] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:16:33,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490182267] [2021-11-03 04:16:33,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:16:33,502 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:16:33,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:16:33,503 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:16:33,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-03 04:16:33,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-11-03 04:16:33,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:16:33,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 04:16:33,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:16:34,114 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:34,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:16:34,433 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:34,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490182267] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:16:34,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1282031667] [2021-11-03 04:16:34,435 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2021-11-03 04:16:34,435 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:16:34,435 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:16:34,436 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:16:34,436 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:16:34,448 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:34,449 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:16:34,449 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:34,450 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:16:34,450 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:16:34,451 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:34,451 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 04:16:34,453 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-11-03 04:16:34,456 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_15|], 21=[|v_#valid_16|]} [2021-11-03 04:16:34,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:34,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:34,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:34,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-03 04:16:34,470 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:34,471 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:16:34,471 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:34,472 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:16:34,473 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:16:34,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:34,477 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:34,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:34,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:34,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:34,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:34,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:34,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:34,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:34,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:34,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:34,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-03 04:16:34,504 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:34,506 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:16:34,507 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:34,507 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:16:34,509 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:16:34,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:34,513 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:34,514 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:34,516 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-03 04:16:34,516 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:16:34,517 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-11-03 04:16:34,524 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:34,528 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-03 04:16:34,552 INFO L180 QuantifierPusher]: treesize reduction 6, result has 96.2 percent of original size [2021-11-03 04:16:34,557 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-03 04:16:34,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:34,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:34,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:34,619 INFO L180 QuantifierPusher]: treesize reduction 9, result has 97.7 percent of original size [2021-11-03 04:16:34,628 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 386 [2021-11-03 04:16:34,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:34,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:34,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:34,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:34,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:34,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:34,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:34,700 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-03 04:16:34,710 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:16:34,716 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-03 04:16:34,719 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:16:34,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:34,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:34,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:34,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:34,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:34,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:34,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:34,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:34,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:34,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:34,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:34,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:34,858 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:16:34,861 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-03 04:16:34,870 INFO L180 QuantifierPusher]: treesize reduction 8, result has 92.3 percent of original size [2021-11-03 04:16:34,873 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-03 04:16:34,881 INFO L180 QuantifierPusher]: treesize reduction 8, result has 89.7 percent of original size [2021-11-03 04:16:34,882 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-03 04:16:34,887 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:16:37,801 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:16:37,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:16:37,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2021-11-03 04:16:37,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702320271] [2021-11-03 04:16:37,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 04:16:37,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:16:37,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 04:16:37,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=880, Unknown=0, NotChecked=0, Total=1056 [2021-11-03 04:16:37,804 INFO L87 Difference]: Start difference. First operand 208 states and 242 transitions. Second operand has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:44,547 WARN L207 SmtUtils]: Spent 6.57 s on a formula simplification. DAG size of input: 30 DAG size of output: 10 [2021-11-03 04:16:53,297 WARN L207 SmtUtils]: Spent 6.37 s on a formula simplification. DAG size of input: 26 DAG size of output: 10 [2021-11-03 04:17:08,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:08,569 INFO L93 Difference]: Finished difference Result 330 states and 385 transitions. [2021-11-03 04:17:08,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-03 04:17:08,570 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have 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 [2021-11-03 04:17:08,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:08,572 INFO L225 Difference]: With dead ends: 330 [2021-11-03 04:17:08,572 INFO L226 Difference]: Without dead ends: 209 [2021-11-03 04:17:08,573 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 112 SyntacticMatches, 11 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 33.4s TimeCoverageRelationStatistics Valid=292, Invalid=1186, Unknown=4, NotChecked=0, Total=1482 [2021-11-03 04:17:08,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-11-03 04:17:08,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 208. [2021-11-03 04:17:08,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 189 states have (on average 1.2380952380952381) internal successors, (234), 207 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:08,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 234 transitions. [2021-11-03 04:17:08,588 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 234 transitions. Word has length 49 [2021-11-03 04:17:08,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:08,588 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 234 transitions. [2021-11-03 04:17:08,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:08,589 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 234 transitions. [2021-11-03 04:17:08,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-03 04:17:08,590 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:08,590 INFO L513 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:17:08,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:17:08,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable183 [2021-11-03 04:17:08,795 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:17:08,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:08,796 INFO L85 PathProgramCache]: Analyzing trace with hash -176223669, now seen corresponding path program 3 times [2021-11-03 04:17:08,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:17:08,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802570109] [2021-11-03 04:17:08,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:08,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:17:08,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:09,029 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:09,029 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:17:09,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802570109] [2021-11-03 04:17:09,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802570109] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:17:09,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200140456] [2021-11-03 04:17:09,030 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-03 04:17:09,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:17:09,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:17:09,034 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:17:09,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-03 04:17:09,302 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-03 04:17:09,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:17:09,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 04:17:09,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:17:09,597 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:09,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:17:10,247 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:10,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200140456] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:17:10,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [181895399] [2021-11-03 04:17:10,250 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2021-11-03 04:17:10,250 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:17:10,251 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:17:10,251 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:17:10,251 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:17:10,259 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:17:10,259 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:17:10,260 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:17:10,260 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 04:17:10,261 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:17:10,262 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:17:10,262 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:17:10,264 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-11-03 04:17:10,267 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_16|], 21=[|v_#valid_17|]} [2021-11-03 04:17:10,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:17:10,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:17:10,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:17:10,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-03 04:17:10,280 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:17:10,280 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:17:10,281 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:17:10,281 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:17:10,282 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:17:10,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:10,286 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:17:10,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:17:10,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:17:10,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:17:10,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:17:10,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:17:10,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:17:10,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:17:10,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:17:10,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:17:10,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-03 04:17:10,310 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:17:10,314 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:17:10,315 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:17:10,315 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:17:10,316 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:17:10,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:10,320 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:17:10,322 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:17:10,323 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-03 04:17:10,324 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:17:10,324 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-11-03 04:17:10,332 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:17:10,337 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-03 04:17:10,354 INFO L180 QuantifierPusher]: treesize reduction 6, result has 96.2 percent of original size [2021-11-03 04:17:10,357 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-03 04:17:10,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:10,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:10,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:10,423 INFO L180 QuantifierPusher]: treesize reduction 9, result has 97.7 percent of original size [2021-11-03 04:17:10,433 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 386 [2021-11-03 04:17:10,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:10,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:10,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:10,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:10,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:10,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:10,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:10,512 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-03 04:17:10,515 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:17:10,521 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-03 04:17:10,523 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:17:10,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:10,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:10,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:10,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:10,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:10,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:10,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:10,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:10,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:10,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:10,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:10,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:10,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:10,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:10,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:10,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:10,716 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:17:10,718 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:17:10,728 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:17:10,759 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:17:10,762 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:17:10,767 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-11-03 04:17:10,783 INFO L185 QuantifierPusher]: treesize reduction 75, result has 70.6 percent of original size 180 [2021-11-03 04:17:10,790 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:17:10,792 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:17:10,795 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-03 04:17:10,799 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-03 04:17:10,809 INFO L180 QuantifierPusher]: treesize reduction 8, result has 90.1 percent of original size [2021-11-03 04:17:10,811 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 04:17:10,818 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:17:13,628 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:17:13,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:17:13,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2021-11-03 04:17:13,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044487125] [2021-11-03 04:17:13,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-03 04:17:13,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:17:13,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-03 04:17:13,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=699, Invalid=1463, Unknown=0, NotChecked=0, Total=2162 [2021-11-03 04:17:13,632 INFO L87 Difference]: Start difference. First operand 208 states and 234 transitions. Second operand has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:14,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:14,015 INFO L93 Difference]: Finished difference Result 543 states and 624 transitions. [2021-11-03 04:17:14,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-03 04:17:14,016 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-03 04:17:14,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:14,022 INFO L225 Difference]: With dead ends: 543 [2021-11-03 04:17:14,022 INFO L226 Difference]: Without dead ends: 419 [2021-11-03 04:17:14,026 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 225 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=699, Invalid=1463, Unknown=0, NotChecked=0, Total=2162 [2021-11-03 04:17:14,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-11-03 04:17:14,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 288. [2021-11-03 04:17:14,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 269 states have (on average 1.2267657992565055) internal successors, (330), 287 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:14,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 330 transitions. [2021-11-03 04:17:14,049 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 330 transitions. Word has length 86 [2021-11-03 04:17:14,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:14,050 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 330 transitions. [2021-11-03 04:17:14,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:14,051 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 330 transitions. [2021-11-03 04:17:14,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-03 04:17:14,052 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:14,052 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:17:14,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-03 04:17:14,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:17:14,267 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:17:14,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:14,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1066767335, now seen corresponding path program 3 times [2021-11-03 04:17:14,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:17:14,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063457038] [2021-11-03 04:17:14,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:14,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:17:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:14,593 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 0 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:14,593 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:17:14,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063457038] [2021-11-03 04:17:14,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063457038] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:17:14,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460693148] [2021-11-03 04:17:14,594 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-03 04:17:14,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:17:14,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:17:14,600 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:17:14,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-03 04:17:14,893 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-03 04:17:14,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:17:14,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-03 04:17:14,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:17:15,755 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 0 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:15,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:17:16,895 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 0 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:16,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460693148] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:17:16,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1816251427] [2021-11-03 04:17:16,897 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2021-11-03 04:17:16,897 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:17:16,898 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:17:16,898 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:17:16,898 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:17:16,908 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:17:16,909 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:17:16,909 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:17:16,910 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 04:17:16,910 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:17:16,911 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:17:16,911 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:17:16,913 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-11-03 04:17:16,916 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_17|], 21=[|v_#valid_18|]} [2021-11-03 04:17:16,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:17:16,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:17:16,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:17:16,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-03 04:17:16,930 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:17:16,931 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:17:16,932 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:17:16,932 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:17:16,933 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:17:16,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:16,937 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:17:16,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:17:16,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:17:16,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:17:16,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:17:16,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:17:16,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:17:16,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:17:16,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:17:16,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:17:16,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-03 04:17:16,964 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:17:16,966 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:17:16,966 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:17:16,967 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:17:16,967 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:17:16,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:16,970 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:17:16,971 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:17:16,971 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-03 04:17:16,972 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:17:16,972 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-11-03 04:17:16,979 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:17:16,982 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-03 04:17:16,995 INFO L180 QuantifierPusher]: treesize reduction 6, result has 96.2 percent of original size [2021-11-03 04:17:17,005 INFO L185 QuantifierPusher]: treesize reduction 8, result has 94.5 percent of original size 137 [2021-11-03 04:17:17,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:17,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:17,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:17,088 INFO L180 QuantifierPusher]: treesize reduction 9, result has 97.7 percent of original size [2021-11-03 04:17:17,097 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 386 [2021-11-03 04:17:17,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:17,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:17,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:17,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:17,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:17,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:17,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:17,169 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-03 04:17:17,171 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:17:17,176 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-03 04:17:17,177 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:17:17,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:17,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:17,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:17,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:17,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:17,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:17,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:17,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:17,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:17,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:17,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:17,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:17:17,296 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:17:17,300 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-03 04:17:17,307 INFO L180 QuantifierPusher]: treesize reduction 8, result has 92.3 percent of original size [2021-11-03 04:17:17,311 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-03 04:17:17,321 INFO L180 QuantifierPusher]: treesize reduction 8, result has 89.7 percent of original size [2021-11-03 04:17:17,323 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-03 04:17:17,329 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:17:21,153 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:17:21,153 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:17:21,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2021-11-03 04:17:21,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198223354] [2021-11-03 04:17:21,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-03 04:17:21,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:17:21,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-03 04:17:21,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=1948, Unknown=0, NotChecked=0, Total=2352 [2021-11-03 04:17:21,157 INFO L87 Difference]: Start difference. First operand 288 states and 330 transitions. Second operand has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:29,352 WARN L207 SmtUtils]: Spent 5.14 s on a formula simplification. DAG size of input: 38 DAG size of output: 10 [2021-11-03 04:19:24,525 WARN L207 SmtUtils]: Spent 1.12 m on a formula simplification. DAG size of input: 62 DAG size of output: 22 [2021-11-03 04:19:24,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:19:24,997 INFO L93 Difference]: Finished difference Result 410 states and 473 transitions. [2021-11-03 04:19:24,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-03 04:19:24,998 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-03 04:19:24,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:19:25,001 INFO L225 Difference]: With dead ends: 410 [2021-11-03 04:19:25,001 INFO L226 Difference]: Without dead ends: 289 [2021-11-03 04:19:25,003 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 216 SyntacticMatches, 19 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 921 ImplicationChecksByTransitivity, 127.3s TimeCoverageRelationStatistics Valid=710, Invalid=2699, Unknown=13, NotChecked=0, Total=3422 [2021-11-03 04:19:25,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-11-03 04:19:25,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 288. [2021-11-03 04:19:25,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 269 states have (on average 1.1895910780669146) internal successors, (320), 287 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:25,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 320 transitions. [2021-11-03 04:19:25,027 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 320 transitions. Word has length 89 [2021-11-03 04:19:25,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:19:25,028 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 320 transitions. [2021-11-03 04:19:25,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:25,028 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 320 transitions. [2021-11-03 04:19:25,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-03 04:19:25,030 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:19:25,030 INFO L513 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:19:25,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-03 04:19:25,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable237 [2021-11-03 04:19:25,246 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:19:25,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:19:25,246 INFO L85 PathProgramCache]: Analyzing trace with hash 113322489, now seen corresponding path program 4 times [2021-11-03 04:19:25,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:19:25,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358163638] [2021-11-03 04:19:25,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:19:25,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:19:25,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 04:19:25,286 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-03 04:19:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 04:19:25,373 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-03 04:19:25,374 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-03 04:19:25,375 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,377 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,377 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,377 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,378 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,378 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,378 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,378 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,379 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,379 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,379 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,379 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,379 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,380 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,380 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,380 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,380 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,381 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,381 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,381 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,381 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,381 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,382 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,382 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,382 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,382 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,382 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,383 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,383 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,383 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,383 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,384 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,384 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,384 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,384 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,385 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,385 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,385 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,385 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,385 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,386 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,386 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,386 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,386 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:19:25,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2021-11-03 04:19:25,391 INFO L731 BasicCegarLoop]: Path program histogram: [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:19:25,397 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 04:19:25,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:19:25 BoogieIcfgContainer [2021-11-03 04:19:25,539 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 04:19:25,539 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 04:19:25,539 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 04:19:25,540 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 04:19:25,540 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:16:01" (3/4) ... [2021-11-03 04:19:25,544 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-03 04:19:25,544 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 04:19:25,545 INFO L168 Benchmark]: Toolchain (without parser) took 205837.60 ms. Allocated memory was 90.2 MB in the beginning and 172.0 MB in the end (delta: 81.8 MB). Free memory was 55.4 MB in the beginning and 86.0 MB in the end (delta: -30.6 MB). Peak memory consumption was 52.0 MB. Max. memory is 16.1 GB. [2021-11-03 04:19:25,547 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 90.2 MB. Free memory was 62.2 MB in the beginning and 62.2 MB in the end (delta: 31.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:19:25,548 INFO L168 Benchmark]: CACSL2BoogieTranslator took 421.68 ms. Allocated memory is still 90.2 MB. Free memory was 55.2 MB in the beginning and 64.0 MB in the end (delta: -8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:19:25,548 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.90 ms. Allocated memory is still 90.2 MB. Free memory was 64.0 MB in the beginning and 61.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:19:25,549 INFO L168 Benchmark]: Boogie Preprocessor took 65.15 ms. Allocated memory is still 90.2 MB. Free memory was 61.6 MB in the beginning and 59.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:19:25,551 INFO L168 Benchmark]: RCFGBuilder took 1163.55 ms. Allocated memory was 90.2 MB in the beginning and 117.4 MB in the end (delta: 27.3 MB). Free memory was 59.8 MB in the beginning and 86.0 MB in the end (delta: -26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:19:25,553 INFO L168 Benchmark]: TraceAbstraction took 204103.78 ms. Allocated memory was 117.4 MB in the beginning and 172.0 MB in the end (delta: 54.5 MB). Free memory was 85.5 MB in the beginning and 86.0 MB in the end (delta: -498.1 kB). Peak memory consumption was 53.9 MB. Max. memory is 16.1 GB. [2021-11-03 04:19:25,554 INFO L168 Benchmark]: Witness Printer took 4.88 ms. Allocated memory is still 172.0 MB. Free memory is still 86.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:19:25,555 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 90.2 MB. Free memory was 62.2 MB in the beginning and 62.2 MB in the end (delta: 31.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 421.68 ms. Allocated memory is still 90.2 MB. Free memory was 55.2 MB in the beginning and 64.0 MB in the end (delta: -8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.90 ms. Allocated memory is still 90.2 MB. Free memory was 64.0 MB in the beginning and 61.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.15 ms. Allocated memory is still 90.2 MB. Free memory was 61.6 MB in the beginning and 59.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1163.55 ms. Allocated memory was 90.2 MB in the beginning and 117.4 MB in the end (delta: 27.3 MB). Free memory was 59.8 MB in the beginning and 86.0 MB in the end (delta: -26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 204103.78 ms. Allocated memory was 117.4 MB in the beginning and 172.0 MB in the end (delta: 54.5 MB). Free memory was 85.5 MB in the beginning and 86.0 MB in the end (delta: -498.1 kB). Peak memory consumption was 53.9 MB. Max. memory is 16.1 GB. * Witness Printer took 4.88 ms. Allocated memory is still 172.0 MB. Free memory is still 86.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * 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: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of bitwiseOr at line 69, overapproximation of bitwiseAnd at line 68. Possible FailurePath: [L213] unsigned int a ; [L214] unsigned int ma = __VERIFIER_nondet_uint(); [L215] signed char ea = __VERIFIER_nondet_char(); [L216] unsigned int b ; [L217] unsigned int mb = __VERIFIER_nondet_uint(); [L218] signed char eb = __VERIFIER_nondet_char(); [L219] unsigned int r_mul ; [L220] unsigned int zero ; [L221] unsigned int one ; [L222] int sb ; [L223] int tmp ; [L224] int tmp___0 ; [L225] int tmp___1 ; [L226] int __retres16 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L230] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND FALSE !(m < 1U << 24U) [L68] m = m & ~ (1U << 24U) [L69] EXPR e + 128 [L69] EXPR (e + 128) << 24U [L69] res = m | (unsigned int )((e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L231] one = base2flt(1, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] EXPR e + 128 [L69] (e + 128) << 24U - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 164]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 164]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 167]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 167]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 169]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 169]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 170]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 170]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 193]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 193]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 206]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 206]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 206]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 206]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 142 locations, 46 error locations. Started 1 CEGAR loops. OverallTime: 203.8s, OverallIterations: 23, TraceHistogramMax: 24, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 161.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 2617 SDtfs, 2511 SDslu, 6976 SDs, 0 SdLazy, 4561 SolverSat, 386 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1384 GetRequests, 1014 SyntacticMatches, 53 SemanticMatches, 317 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4431 ImplicationChecksByTransitivity, 181.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=288occurred in iteration=21, InterpolantAutomatonStates: 212, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 22 MinimizatonAttempts, 795 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 1174 NumberOfCodeBlocks, 1174 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 1422 ConstructedInterpolants, 0 QuantifiedInterpolants, 5627 SizeOfPredicates, 20 NumberOfNonLiveVariables, 1347 ConjunctsInSsa, 118 ConjunctsInUnsatCore, 42 InterpolantComputations, 14 PerfectInterpolantSequences, 25/3453 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: OVERALL_TIME[ms]: 2857, ICFG_INTERPRETER_ENTERED_PROCEDURES: 3, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 57, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 107, TOOLS_POST_TIME[ms]: 1079, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 107, TOOLS_QUANTIFIERELIM_TIME[ms]: 1046, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 220, FLUID_QUERY_TIME[ms]: 14, FLUID_QUERIES: 186, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 12, DOMAIN_JOIN_TIME[ms]: 844, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 6, DOMAIN_WIDEN_TIME[ms]: 668, DOMAIN_ISSUBSETEQ_APPLICATIONS: 9, DOMAIN_ISSUBSETEQ_TIME[ms]: 33, DOMAIN_ISBOTTOM_APPLICATIONS: 57, DOMAIN_ISBOTTOM_TIME[ms]: 100, LOOP_SUMMARIZER_APPLICATIONS: 3, LOOP_SUMMARIZER_CACHE_MISSES: 3, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 973, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 973, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 9, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 3, PATH_EXPR_TIME[ms]: 6, REGEX_TO_DAG_TIME[ms]: 7, DAG_COMPRESSION_TIME[ms]: 57, DAG_COMPRESSION_PROCESSED_NODES: 1095, DAG_COMPRESSION_RETAINED_NODES: 155, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-03 04:19:25,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_755d386f-bf3c-4688-955f-a724f9645efc/bin/utaipan-aC7eJsxGYH/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample