./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/s3_srvr_1a_alt.BV.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2fa04e6f-bd86-4cef-a9a7-da28340fcb1c/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2fa04e6f-bd86-4cef-a9a7-da28340fcb1c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2fa04e6f-bd86-4cef-a9a7-da28340fcb1c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2fa04e6f-bd86-4cef-a9a7-da28340fcb1c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/s3_srvr_1a_alt.BV.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2fa04e6f-bd86-4cef-a9a7-da28340fcb1c/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2fa04e6f-bd86-4cef-a9a7-da28340fcb1c/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 139ef67971e7ed714d59975d45ea043b5c6a1676 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_2fa04e6f-bd86-4cef-a9a7-da28340fcb1c/bin/uautomizer/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 --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:48:20,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:48:20,040 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:48:20,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:48:20,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:48:20,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:48:20,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:48:20,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:48:20,142 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:48:20,144 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:48:20,145 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:48:20,147 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:48:20,148 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:48:20,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:48:20,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:48:20,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:48:20,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:48:20,157 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:48:20,159 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:48:20,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:48:20,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:48:20,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:48:20,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:48:20,171 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:48:20,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:48:20,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:48:20,177 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:48:20,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:48:20,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:48:20,181 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:48:20,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:48:20,183 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:48:20,184 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:48:20,186 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:48:20,188 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:48:20,188 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:48:20,190 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:48:20,190 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:48:20,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:48:20,192 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:48:20,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:48:20,195 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2fa04e6f-bd86-4cef-a9a7-da28340fcb1c/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2020-11-29 19:48:20,226 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:48:20,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:48:20,229 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:48:20,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:48:20,230 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:48:20,231 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:48:20,231 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:48:20,232 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:48:20,232 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:48:20,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:48:20,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:48:20,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:48:20,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:48:20,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:48:20,235 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-29 19:48:20,236 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:48:20,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:48:20,237 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:48:20,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:48:20,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:48:20,238 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:48:20,239 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:48:20,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:48:20,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:48:20,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:48:20,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:48:20,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:48:20,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:48:20,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:48:20,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:48:20,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:48:20,243 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_2fa04e6f-bd86-4cef-a9a7-da28340fcb1c/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2fa04e6f-bd86-4cef-a9a7-da28340fcb1c/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 139ef67971e7ed714d59975d45ea043b5c6a1676 [2020-11-29 19:48:20,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:48:20,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:48:20,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:48:20,648 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:48:20,649 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:48:20,650 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2fa04e6f-bd86-4cef-a9a7-da28340fcb1c/bin/uautomizer/../../sv-benchmarks/c/bitvector/s3_srvr_1a_alt.BV.c.cil.c [2020-11-29 19:48:20,765 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2fa04e6f-bd86-4cef-a9a7-da28340fcb1c/bin/uautomizer/data/f9fb0ba6f/cc77151ff6ce48268a94a994fdcc3f9d/FLAGfc2af7ddf [2020-11-29 19:48:21,447 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:48:21,448 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2fa04e6f-bd86-4cef-a9a7-da28340fcb1c/sv-benchmarks/c/bitvector/s3_srvr_1a_alt.BV.c.cil.c [2020-11-29 19:48:21,465 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2fa04e6f-bd86-4cef-a9a7-da28340fcb1c/bin/uautomizer/data/f9fb0ba6f/cc77151ff6ce48268a94a994fdcc3f9d/FLAGfc2af7ddf [2020-11-29 19:48:21,752 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2fa04e6f-bd86-4cef-a9a7-da28340fcb1c/bin/uautomizer/data/f9fb0ba6f/cc77151ff6ce48268a94a994fdcc3f9d [2020-11-29 19:48:21,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:48:21,759 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:48:21,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:48:21,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:48:21,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:48:21,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:48:21" (1/1) ... [2020-11-29 19:48:21,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32229697 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:48:21, skipping insertion in model container [2020-11-29 19:48:21,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:48:21" (1/1) ... [2020-11-29 19:48:21,789 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:48:21,881 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:48:22,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:48:22,224 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:48:22,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:48:22,348 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:48:22,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:48:22 WrapperNode [2020-11-29 19:48:22,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:48:22,356 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:48:22,356 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:48:22,356 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:48:22,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:48:22" (1/1) ... [2020-11-29 19:48:22,414 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:48:22" (1/1) ... [2020-11-29 19:48:22,510 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:48:22,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:48:22,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:48:22,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:48:22,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:48:22" (1/1) ... [2020-11-29 19:48:22,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:48:22" (1/1) ... [2020-11-29 19:48:22,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:48:22" (1/1) ... [2020-11-29 19:48:22,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:48:22" (1/1) ... [2020-11-29 19:48:22,585 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:48:22" (1/1) ... [2020-11-29 19:48:22,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:48:22" (1/1) ... [2020-11-29 19:48:22,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:48:22" (1/1) ... [2020-11-29 19:48:22,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:48:22,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:48:22,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:48:22,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:48:22,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:48:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2fa04e6f-bd86-4cef-a9a7-da28340fcb1c/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:48:22,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:48:22,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:48:22,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:48:22,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:48:22,961 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-29 19:48:27,048 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##93: assume !false; [2020-11-29 19:48:27,049 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##92: assume false; [2020-11-29 19:48:27,061 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:48:27,061 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-11-29 19:48:27,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:48:27 BoogieIcfgContainer [2020-11-29 19:48:27,064 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:48:27,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:48:27,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:48:27,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:48:27,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:48:21" (1/3) ... [2020-11-29 19:48:27,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9bddc2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:48:27, skipping insertion in model container [2020-11-29 19:48:27,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:48:22" (2/3) ... [2020-11-29 19:48:27,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9bddc2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:48:27, skipping insertion in model container [2020-11-29 19:48:27,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:48:27" (3/3) ... [2020-11-29 19:48:27,075 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1a_alt.BV.c.cil.c [2020-11-29 19:48:27,089 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:48:27,095 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-11-29 19:48:27,111 INFO L253 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-11-29 19:48:27,145 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:48:27,145 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:48:27,145 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:48:27,146 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:48:27,146 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:48:27,146 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:48:27,146 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:48:27,146 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:48:27,178 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-11-29 19:48:27,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 19:48:27,185 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:48:27,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:48:27,187 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:48:27,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:48:27,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1872136602, now seen corresponding path program 1 times [2020-11-29 19:48:27,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:48:27,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131716737] [2020-11-29 19:48:27,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:48:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:48:27,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:48:27,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131716737] [2020-11-29 19:48:27,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:48:27,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:48:27,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442800973] [2020-11-29 19:48:27,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 19:48:27,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:48:27,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 19:48:27,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:48:27,564 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 2 states. [2020-11-29 19:48:27,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:48:27,660 INFO L93 Difference]: Finished difference Result 328 states and 527 transitions. [2020-11-29 19:48:27,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 19:48:27,662 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2020-11-29 19:48:27,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:48:27,697 INFO L225 Difference]: With dead ends: 328 [2020-11-29 19:48:27,698 INFO L226 Difference]: Without dead ends: 153 [2020-11-29 19:48:27,703 INFO L677 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 [2020-11-29 19:48:27,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-11-29 19:48:27,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2020-11-29 19:48:27,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-11-29 19:48:27,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 221 transitions. [2020-11-29 19:48:27,801 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 221 transitions. Word has length 20 [2020-11-29 19:48:27,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:48:27,802 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 221 transitions. [2020-11-29 19:48:27,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 19:48:27,802 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 221 transitions. [2020-11-29 19:48:27,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 19:48:27,804 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:48:27,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:48:27,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:48:27,807 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:48:27,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:48:27,810 INFO L82 PathProgramCache]: Analyzing trace with hash -122008104, now seen corresponding path program 1 times [2020-11-29 19:48:27,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:48:27,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356985603] [2020-11-29 19:48:27,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:48:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:48:28,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:48:28,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356985603] [2020-11-29 19:48:28,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:48:28,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:48:28,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310437309] [2020-11-29 19:48:28,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:48:28,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:48:28,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:48:28,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:48:28,028 INFO L87 Difference]: Start difference. First operand 153 states and 221 transitions. Second operand 4 states. [2020-11-29 19:48:28,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:48:28,421 INFO L93 Difference]: Finished difference Result 314 states and 455 transitions. [2020-11-29 19:48:28,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:48:28,422 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-11-29 19:48:28,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:48:28,424 INFO L225 Difference]: With dead ends: 314 [2020-11-29 19:48:28,424 INFO L226 Difference]: Without dead ends: 171 [2020-11-29 19:48:28,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:48:28,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-11-29 19:48:28,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-11-29 19:48:28,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-11-29 19:48:28,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 246 transitions. [2020-11-29 19:48:28,444 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 246 transitions. Word has length 20 [2020-11-29 19:48:28,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:48:28,444 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 246 transitions. [2020-11-29 19:48:28,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:48:28,445 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 246 transitions. [2020-11-29 19:48:28,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 19:48:28,446 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:48:28,446 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:48:28,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 19:48:28,446 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:48:28,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:48:28,447 INFO L82 PathProgramCache]: Analyzing trace with hash 261327610, now seen corresponding path program 1 times [2020-11-29 19:48:28,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:48:28,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649901468] [2020-11-29 19:48:28,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:48:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:48:28,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:48:28,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649901468] [2020-11-29 19:48:28,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:48:28,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:48:28,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745413929] [2020-11-29 19:48:28,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:48:28,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:48:28,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:48:28,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:48:28,567 INFO L87 Difference]: Start difference. First operand 171 states and 246 transitions. Second operand 4 states. [2020-11-29 19:48:28,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:48:28,976 INFO L93 Difference]: Finished difference Result 342 states and 491 transitions. [2020-11-29 19:48:28,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:48:28,977 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-11-29 19:48:28,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:48:28,979 INFO L225 Difference]: With dead ends: 342 [2020-11-29 19:48:28,979 INFO L226 Difference]: Without dead ends: 181 [2020-11-29 19:48:28,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:48:28,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-11-29 19:48:28,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 172. [2020-11-29 19:48:28,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-11-29 19:48:28,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 247 transitions. [2020-11-29 19:48:28,998 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 247 transitions. Word has length 21 [2020-11-29 19:48:28,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:48:28,998 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 247 transitions. [2020-11-29 19:48:28,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:48:28,998 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 247 transitions. [2020-11-29 19:48:28,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 19:48:29,000 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:48:29,000 INFO L422 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] [2020-11-29 19:48:29,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 19:48:29,001 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:48:29,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:48:29,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1606953904, now seen corresponding path program 1 times [2020-11-29 19:48:29,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:48:29,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049927142] [2020-11-29 19:48:29,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:48:29,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:48:29,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:48:29,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049927142] [2020-11-29 19:48:29,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:48:29,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:48:29,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834428351] [2020-11-29 19:48:29,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:48:29,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:48:29,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:48:29,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:48:29,082 INFO L87 Difference]: Start difference. First operand 172 states and 247 transitions. Second operand 4 states. [2020-11-29 19:48:29,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:48:29,852 INFO L93 Difference]: Finished difference Result 344 states and 493 transitions. [2020-11-29 19:48:29,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:48:29,854 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-11-29 19:48:29,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:48:29,855 INFO L225 Difference]: With dead ends: 344 [2020-11-29 19:48:29,856 INFO L226 Difference]: Without dead ends: 182 [2020-11-29 19:48:29,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:48:29,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-11-29 19:48:29,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 173. [2020-11-29 19:48:29,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-11-29 19:48:29,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 248 transitions. [2020-11-29 19:48:29,873 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 248 transitions. Word has length 22 [2020-11-29 19:48:29,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:48:29,874 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 248 transitions. [2020-11-29 19:48:29,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:48:29,874 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 248 transitions. [2020-11-29 19:48:29,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 19:48:29,875 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:48:29,875 INFO L422 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] [2020-11-29 19:48:29,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 19:48:29,876 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:48:29,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:48:29,877 INFO L82 PathProgramCache]: Analyzing trace with hash -376706219, now seen corresponding path program 1 times [2020-11-29 19:48:29,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:48:29,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651571037] [2020-11-29 19:48:29,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:48:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:48:29,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:48:29,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651571037] [2020-11-29 19:48:29,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:48:29,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:48:29,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189624947] [2020-11-29 19:48:29,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:48:29,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:48:29,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:48:29,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:48:29,982 INFO L87 Difference]: Start difference. First operand 173 states and 248 transitions. Second operand 4 states. [2020-11-29 19:48:30,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:48:30,462 INFO L93 Difference]: Finished difference Result 346 states and 495 transitions. [2020-11-29 19:48:30,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:48:30,464 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-11-29 19:48:30,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:48:30,466 INFO L225 Difference]: With dead ends: 346 [2020-11-29 19:48:30,466 INFO L226 Difference]: Without dead ends: 183 [2020-11-29 19:48:30,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:48:30,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-11-29 19:48:30,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 174. [2020-11-29 19:48:30,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-11-29 19:48:30,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 249 transitions. [2020-11-29 19:48:30,501 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 249 transitions. Word has length 23 [2020-11-29 19:48:30,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:48:30,502 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 249 transitions. [2020-11-29 19:48:30,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:48:30,502 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 249 transitions. [2020-11-29 19:48:30,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 19:48:30,504 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:48:30,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:48:30,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 19:48:30,505 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:48:30,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:48:30,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1876301173, now seen corresponding path program 1 times [2020-11-29 19:48:30,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:48:30,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546914609] [2020-11-29 19:48:30,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:48:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:48:30,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:48:30,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546914609] [2020-11-29 19:48:30,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:48:30,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:48:30,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593752709] [2020-11-29 19:48:30,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:48:30,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:48:30,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:48:30,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:48:30,625 INFO L87 Difference]: Start difference. First operand 174 states and 249 transitions. Second operand 4 states. [2020-11-29 19:48:30,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:48:30,999 INFO L93 Difference]: Finished difference Result 348 states and 497 transitions. [2020-11-29 19:48:31,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:48:31,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-11-29 19:48:31,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:48:31,003 INFO L225 Difference]: With dead ends: 348 [2020-11-29 19:48:31,003 INFO L226 Difference]: Without dead ends: 184 [2020-11-29 19:48:31,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:48:31,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-11-29 19:48:31,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 175. [2020-11-29 19:48:31,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-11-29 19:48:31,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 250 transitions. [2020-11-29 19:48:31,019 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 250 transitions. Word has length 24 [2020-11-29 19:48:31,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:48:31,024 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 250 transitions. [2020-11-29 19:48:31,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:48:31,024 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 250 transitions. [2020-11-29 19:48:31,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-29 19:48:31,026 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:48:31,027 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:48:31,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 19:48:31,028 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:48:31,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:48:31,028 INFO L82 PathProgramCache]: Analyzing trace with hash 57535363, now seen corresponding path program 1 times [2020-11-29 19:48:31,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:48:31,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527236991] [2020-11-29 19:48:31,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:48:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:48:31,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:48:31,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527236991] [2020-11-29 19:48:31,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:48:31,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:48:31,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367115788] [2020-11-29 19:48:31,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:48:31,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:48:31,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:48:31,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:48:31,097 INFO L87 Difference]: Start difference. First operand 175 states and 250 transitions. Second operand 4 states. [2020-11-29 19:48:31,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:48:31,776 INFO L93 Difference]: Finished difference Result 381 states and 551 transitions. [2020-11-29 19:48:31,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:48:31,778 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-11-29 19:48:31,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:48:31,780 INFO L225 Difference]: With dead ends: 381 [2020-11-29 19:48:31,781 INFO L226 Difference]: Without dead ends: 216 [2020-11-29 19:48:31,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:48:31,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-11-29 19:48:31,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 200. [2020-11-29 19:48:31,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-11-29 19:48:31,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 290 transitions. [2020-11-29 19:48:31,798 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 290 transitions. Word has length 35 [2020-11-29 19:48:31,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:48:31,798 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 290 transitions. [2020-11-29 19:48:31,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:48:31,798 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 290 transitions. [2020-11-29 19:48:31,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-29 19:48:31,801 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:48:31,801 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:48:31,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 19:48:31,802 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:48:31,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:48:31,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1129130503, now seen corresponding path program 1 times [2020-11-29 19:48:31,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:48:31,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611123916] [2020-11-29 19:48:31,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:48:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:48:31,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:48:31,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611123916] [2020-11-29 19:48:31,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:48:31,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:48:31,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113992865] [2020-11-29 19:48:31,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:48:31,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:48:31,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:48:31,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:48:31,921 INFO L87 Difference]: Start difference. First operand 200 states and 290 transitions. Second operand 4 states. [2020-11-29 19:48:32,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:48:32,373 INFO L93 Difference]: Finished difference Result 418 states and 614 transitions. [2020-11-29 19:48:32,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:48:32,376 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-11-29 19:48:32,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:48:32,379 INFO L225 Difference]: With dead ends: 418 [2020-11-29 19:48:32,379 INFO L226 Difference]: Without dead ends: 228 [2020-11-29 19:48:32,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:48:32,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-11-29 19:48:32,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 212. [2020-11-29 19:48:32,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-11-29 19:48:32,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 313 transitions. [2020-11-29 19:48:32,404 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 313 transitions. Word has length 36 [2020-11-29 19:48:32,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:48:32,404 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 313 transitions. [2020-11-29 19:48:32,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:48:32,405 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 313 transitions. [2020-11-29 19:48:32,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-29 19:48:32,417 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:48:32,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:48:32,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 19:48:32,418 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:48:32,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:48:32,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1135831245, now seen corresponding path program 1 times [2020-11-29 19:48:32,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:48:32,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121382456] [2020-11-29 19:48:32,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:48:32,457 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:48:32,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [486423604] [2020-11-29 19:48:32,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2fa04e6f-bd86-4cef-a9a7-da28340fcb1c/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:48:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:48:32,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 19:48:32,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:48:32,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:48:32,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121382456] [2020-11-29 19:48:32,724 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:48:32,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486423604] [2020-11-29 19:48:32,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:48:32,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:48:32,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936181948] [2020-11-29 19:48:32,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:48:32,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:48:32,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:48:32,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:48:32,740 INFO L87 Difference]: Start difference. First operand 212 states and 313 transitions. Second operand 4 states. [2020-11-29 19:48:33,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:48:33,621 INFO L93 Difference]: Finished difference Result 471 states and 704 transitions. [2020-11-29 19:48:33,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:48:33,627 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-11-29 19:48:33,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:48:33,630 INFO L225 Difference]: With dead ends: 471 [2020-11-29 19:48:33,630 INFO L226 Difference]: Without dead ends: 269 [2020-11-29 19:48:33,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:48:33,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-11-29 19:48:33,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 256. [2020-11-29 19:48:33,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-11-29 19:48:33,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 364 transitions. [2020-11-29 19:48:33,657 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 364 transitions. Word has length 46 [2020-11-29 19:48:33,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:48:33,658 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 364 transitions. [2020-11-29 19:48:33,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:48:33,658 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 364 transitions. [2020-11-29 19:48:33,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-29 19:48:33,666 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:48:33,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:48:33,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-29 19:48:33,884 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:48:33,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:48:33,885 INFO L82 PathProgramCache]: Analyzing trace with hash 455184635, now seen corresponding path program 1 times [2020-11-29 19:48:33,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:48:33,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475584322] [2020-11-29 19:48:33,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:48:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:48:33,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:48:33,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475584322] [2020-11-29 19:48:33,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:48:33,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:48:33,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528298719] [2020-11-29 19:48:33,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:48:34,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:48:34,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:48:34,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:48:34,001 INFO L87 Difference]: Start difference. First operand 256 states and 364 transitions. Second operand 4 states. [2020-11-29 19:48:34,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:48:34,543 INFO L93 Difference]: Finished difference Result 323 states and 454 transitions. [2020-11-29 19:48:34,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:48:34,545 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-11-29 19:48:34,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:48:34,548 INFO L225 Difference]: With dead ends: 323 [2020-11-29 19:48:34,548 INFO L226 Difference]: Without dead ends: 304 [2020-11-29 19:48:34,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:48:34,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-11-29 19:48:34,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2020-11-29 19:48:34,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-11-29 19:48:34,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 434 transitions. [2020-11-29 19:48:34,574 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 434 transitions. Word has length 48 [2020-11-29 19:48:34,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:48:34,574 INFO L481 AbstractCegarLoop]: Abstraction has 304 states and 434 transitions. [2020-11-29 19:48:34,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:48:34,574 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 434 transitions. [2020-11-29 19:48:34,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-29 19:48:34,576 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:48:34,576 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:48:34,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 19:48:34,576 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:48:34,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:48:34,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1725100399, now seen corresponding path program 1 times [2020-11-29 19:48:34,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:48:34,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120413488] [2020-11-29 19:48:34,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:48:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:48:34,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:48:34,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120413488] [2020-11-29 19:48:34,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:48:34,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:48:34,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963381137] [2020-11-29 19:48:34,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:48:34,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:48:34,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:48:34,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:48:34,734 INFO L87 Difference]: Start difference. First operand 304 states and 434 transitions. Second operand 4 states. [2020-11-29 19:48:35,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:48:35,251 INFO L93 Difference]: Finished difference Result 629 states and 891 transitions. [2020-11-29 19:48:35,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:48:35,252 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-11-29 19:48:35,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:48:35,255 INFO L225 Difference]: With dead ends: 629 [2020-11-29 19:48:35,255 INFO L226 Difference]: Without dead ends: 322 [2020-11-29 19:48:35,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:48:35,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-11-29 19:48:35,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2020-11-29 19:48:35,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-11-29 19:48:35,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 455 transitions. [2020-11-29 19:48:35,278 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 455 transitions. Word has length 49 [2020-11-29 19:48:35,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:48:35,281 INFO L481 AbstractCegarLoop]: Abstraction has 322 states and 455 transitions. [2020-11-29 19:48:35,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:48:35,281 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 455 transitions. [2020-11-29 19:48:35,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-11-29 19:48:35,284 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:48:35,284 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:48:35,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-29 19:48:35,285 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:48:35,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:48:35,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1041558250, now seen corresponding path program 1 times [2020-11-29 19:48:35,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:48:35,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764524204] [2020-11-29 19:48:35,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:48:35,301 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:48:35,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [72150755] [2020-11-29 19:48:35,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2fa04e6f-bd86-4cef-a9a7-da28340fcb1c/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:48:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:48:35,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 19:48:35,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:48:35,494 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:48:35,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764524204] [2020-11-29 19:48:35,494 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:48:35,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72150755] [2020-11-29 19:48:35,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:48:35,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:48:35,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219186434] [2020-11-29 19:48:35,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:48:35,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:48:35,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:48:35,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:48:35,497 INFO L87 Difference]: Start difference. First operand 322 states and 455 transitions. Second operand 3 states. [2020-11-29 19:48:35,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:48:35,918 INFO L93 Difference]: Finished difference Result 659 states and 935 transitions. [2020-11-29 19:48:35,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:48:35,919 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-11-29 19:48:35,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:48:35,922 INFO L225 Difference]: With dead ends: 659 [2020-11-29 19:48:35,922 INFO L226 Difference]: Without dead ends: 347 [2020-11-29 19:48:35,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:48:35,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2020-11-29 19:48:35,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 343. [2020-11-29 19:48:35,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-11-29 19:48:35,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 481 transitions. [2020-11-29 19:48:35,945 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 481 transitions. Word has length 62 [2020-11-29 19:48:35,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:48:35,945 INFO L481 AbstractCegarLoop]: Abstraction has 343 states and 481 transitions. [2020-11-29 19:48:35,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:48:35,945 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 481 transitions. [2020-11-29 19:48:35,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-11-29 19:48:35,947 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:48:35,948 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:48:36,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-29 19:48:36,172 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:48:36,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:48:36,172 INFO L82 PathProgramCache]: Analyzing trace with hash 436186050, now seen corresponding path program 1 times [2020-11-29 19:48:36,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:48:36,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073953068] [2020-11-29 19:48:36,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:48:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:48:36,260 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:48:36,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073953068] [2020-11-29 19:48:36,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:48:36,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:48:36,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153562123] [2020-11-29 19:48:36,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:48:36,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:48:36,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:48:36,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:48:36,268 INFO L87 Difference]: Start difference. First operand 343 states and 481 transitions. Second operand 3 states. [2020-11-29 19:48:36,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:48:36,325 INFO L93 Difference]: Finished difference Result 700 states and 978 transitions. [2020-11-29 19:48:36,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:48:36,326 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-11-29 19:48:36,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:48:36,329 INFO L225 Difference]: With dead ends: 700 [2020-11-29 19:48:36,330 INFO L226 Difference]: Without dead ends: 367 [2020-11-29 19:48:36,331 INFO L677 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 [2020-11-29 19:48:36,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-11-29 19:48:36,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2020-11-29 19:48:36,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-11-29 19:48:36,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 510 transitions. [2020-11-29 19:48:36,354 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 510 transitions. Word has length 83 [2020-11-29 19:48:36,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:48:36,356 INFO L481 AbstractCegarLoop]: Abstraction has 367 states and 510 transitions. [2020-11-29 19:48:36,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:48:36,356 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 510 transitions. [2020-11-29 19:48:36,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-11-29 19:48:36,358 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:48:36,358 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:48:36,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-29 19:48:36,359 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:48:36,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:48:36,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1809393404, now seen corresponding path program 1 times [2020-11-29 19:48:36,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:48:36,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767135798] [2020-11-29 19:48:36,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:48:36,379 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:48:36,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1824005477] [2020-11-29 19:48:36,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2fa04e6f-bd86-4cef-a9a7-da28340fcb1c/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:48:36,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:48:36,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 19:48:36,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:48:36,541 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 19:48:36,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767135798] [2020-11-29 19:48:36,542 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:48:36,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824005477] [2020-11-29 19:48:36,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:48:36,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:48:36,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720508591] [2020-11-29 19:48:36,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:48:36,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:48:36,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:48:36,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:48:36,545 INFO L87 Difference]: Start difference. First operand 367 states and 510 transitions. Second operand 3 states. [2020-11-29 19:48:36,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:48:36,651 INFO L93 Difference]: Finished difference Result 1047 states and 1463 transitions. [2020-11-29 19:48:36,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:48:36,653 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-11-29 19:48:36,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:48:36,660 INFO L225 Difference]: With dead ends: 1047 [2020-11-29 19:48:36,660 INFO L226 Difference]: Without dead ends: 690 [2020-11-29 19:48:36,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:48:36,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2020-11-29 19:48:36,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 652. [2020-11-29 19:48:36,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2020-11-29 19:48:36,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 932 transitions. [2020-11-29 19:48:36,708 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 932 transitions. Word has length 83 [2020-11-29 19:48:36,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:48:36,708 INFO L481 AbstractCegarLoop]: Abstraction has 652 states and 932 transitions. [2020-11-29 19:48:36,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:48:36,709 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 932 transitions. [2020-11-29 19:48:36,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-11-29 19:48:36,711 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:48:36,711 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:48:36,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-29 19:48:36,925 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:48:36,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:48:36,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1809395326, now seen corresponding path program 1 times [2020-11-29 19:48:36,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:48:36,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993134734] [2020-11-29 19:48:36,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:48:36,940 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:48:36,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1655334911] [2020-11-29 19:48:36,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2fa04e6f-bd86-4cef-a9a7-da28340fcb1c/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:48:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:48:37,099 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:48:37,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:48:37,182 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:48:37,484 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:48:37,485 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:48:37,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:48:37,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:48:37 BoogieIcfgContainer [2020-11-29 19:48:37,838 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:48:37,838 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:48:37,839 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:48:37,839 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:48:37,839 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:48:27" (3/4) ... [2020-11-29 19:48:37,843 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 19:48:37,844 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:48:37,846 INFO L168 Benchmark]: Toolchain (without parser) took 16085.99 ms. Allocated memory was 100.7 MB in the beginning and 151.0 MB in the end (delta: 50.3 MB). Free memory was 70.4 MB in the beginning and 71.6 MB in the end (delta: -1.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:48:37,854 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 75.5 MB. Free memory was 36.3 MB in the beginning and 36.3 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:48:37,855 INFO L168 Benchmark]: CACSL2BoogieTranslator took 586.20 ms. Allocated memory is still 100.7 MB. Free memory was 70.1 MB in the beginning and 74.0 MB in the end (delta: -3.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:48:37,856 INFO L168 Benchmark]: Boogie Procedure Inliner took 158.48 ms. Allocated memory is still 100.7 MB. Free memory was 73.5 MB in the beginning and 70.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:48:37,858 INFO L168 Benchmark]: Boogie Preprocessor took 103.16 ms. Allocated memory is still 100.7 MB. Free memory was 70.7 MB in the beginning and 68.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:48:37,858 INFO L168 Benchmark]: RCFGBuilder took 4432.82 ms. Allocated memory is still 100.7 MB. Free memory was 68.6 MB in the beginning and 49.6 MB in the end (delta: 19.0 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:48:37,860 INFO L168 Benchmark]: TraceAbstraction took 10771.60 ms. Allocated memory was 100.7 MB in the beginning and 151.0 MB in the end (delta: 50.3 MB). Free memory was 49.1 MB in the beginning and 71.6 MB in the end (delta: -22.5 MB). Peak memory consumption was 31.0 MB. Max. memory is 16.1 GB. [2020-11-29 19:48:37,862 INFO L168 Benchmark]: Witness Printer took 5.50 ms. Allocated memory is still 151.0 MB. Free memory is still 71.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:48:37,866 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 75.5 MB. Free memory was 36.3 MB in the beginning and 36.3 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 586.20 ms. Allocated memory is still 100.7 MB. Free memory was 70.1 MB in the beginning and 74.0 MB in the end (delta: -3.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 158.48 ms. Allocated memory is still 100.7 MB. Free memory was 73.5 MB in the beginning and 70.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 103.16 ms. Allocated memory is still 100.7 MB. Free memory was 70.7 MB in the beginning and 68.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4432.82 ms. Allocated memory is still 100.7 MB. Free memory was 68.6 MB in the beginning and 49.6 MB in the end (delta: 19.0 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10771.60 ms. Allocated memory was 100.7 MB in the beginning and 151.0 MB in the end (delta: 50.3 MB). Free memory was 49.1 MB in the beginning and 71.6 MB in the end (delta: -22.5 MB). Peak memory consumption was 31.0 MB. Max. memory is 16.1 GB. * Witness Printer took 5.50 ms. Allocated memory is still 151.0 MB. Free memory is still 71.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 548]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of bitwiseAnd at line 93. Possible FailurePath: [L692] int s ; [L693] int tmp ; [L697] s = 8464 [L17] int s__info_callback = __VERIFIER_nondet_int(); [L18] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L19] int s__state ; [L20] int s__new_session ; [L21] int s__server ; [L22] int s__version = __VERIFIER_nondet_int(); [L23] int s__type ; [L24] int s__init_num ; [L25] int s__hit = __VERIFIER_nondet_int(); [L26] int s__rwstate ; [L27] int s__init_buf___0 ; [L28] int s__debug = __VERIFIER_nondet_int(); [L29] int s__shutdown ; [L30] int s__cert = __VERIFIER_nondet_int(); [L31] int s__options = __VERIFIER_nondet_int(); [L32] int s__verify_mode = __VERIFIER_nondet_int(); [L33] int s__session__peer = __VERIFIER_nondet_int(); [L34] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int(); [L35] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L36] int s__ctx__stats__sess_accept_renegotiate ; [L37] int s__ctx__stats__sess_accept ; [L38] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int(); [L39] int s__s3__tmp__cert_request ; [L40] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L41] int s__s3__tmp__use_rsa_tmp ; [L42] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L43] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L44] int s__s3__tmp__next_state___0 ; [L45] int s__s3__tmp__new_cipher__algo_strength = __VERIFIER_nondet_int(); [L46] int s__session__cipher ; [L47] int buf = __VERIFIER_nondet_int(); [L48] unsigned long l ; [L49] unsigned long Time ; [L50] unsigned long tmp = __VERIFIER_nondet_ulong(); [L51] int cb ; [L52] long num1 ; [L53] int ret ; [L54] int new_state ; [L55] int state ; [L56] int skip ; [L57] int got_new_session ; [L58] int tmp___1 = __VERIFIER_nondet_int(); [L59] int tmp___2 = __VERIFIER_nondet_int(); [L60] int tmp___3 ; [L61] int tmp___4 ; [L62] int tmp___5 ; [L63] int tmp___6 ; [L64] int tmp___7 ; [L65] long tmp___8 = __VERIFIER_nondet_long(); [L66] int tmp___9 ; [L67] int tmp___10 ; [L68] int blastFlag ; [L69] int ag_X ; [L70] int ag_Y = __VERIFIER_nondet_int(); [L71] int ag_Z ; [L72] int __retres70 ; [L3] COND FALSE !(!cond) [L76] s__state = initial_state [L77] blastFlag = 0 [L78] Time = tmp [L79] cb = 0 [L80] ret = -1 [L81] skip = 0 [L82] got_new_session = 0 [L83] COND TRUE s__info_callback != 0 [L84] cb = s__info_callback [L92] s__in_handshake = s__in_handshake + 1 [L93] COND FALSE !(tmp___1 & 12288) [L102] COND FALSE !(s__cert == 0) [L109] COND TRUE 1 [L111] state = s__state [L112] COND FALSE !(s__state == 12292) [L115] COND FALSE !(s__state == 16384) [L118] COND FALSE !(s__state == 8192) [L121] COND FALSE !(s__state == 24576) [L124] COND FALSE !(s__state == 8195) [L127] COND FALSE !(s__state == 8480) [L130] COND FALSE !(s__state == 8481) [L133] COND FALSE !(s__state == 8482) [L136] COND TRUE s__state == 8464 [L294] s__shutdown = 0 [L295] ret = __VERIFIER_nondet_int() [L296] COND TRUE blastFlag == 0 [L297] blastFlag = 1 [L301] COND FALSE !(ret <= 0) [L306] got_new_session = 1 [L307] s__state = 8496 [L308] s__init_num = 0 [L641] COND FALSE !(! s__s3__tmp__reuse_message) [L670] skip = 0 [L109] COND TRUE 1 [L111] state = s__state [L112] COND FALSE !(s__state == 12292) [L115] COND FALSE !(s__state == 16384) [L118] COND FALSE !(s__state == 8192) [L121] COND FALSE !(s__state == 24576) [L124] COND FALSE !(s__state == 8195) [L127] COND FALSE !(s__state == 8480) [L130] COND FALSE !(s__state == 8481) [L133] COND FALSE !(s__state == 8482) [L136] COND FALSE !(s__state == 8464) [L139] COND FALSE !(s__state == 8465) [L142] COND FALSE !(s__state == 8466) [L145] COND TRUE s__state == 8496 [L312] ret = __VERIFIER_nondet_int() [L313] COND TRUE blastFlag == 1 [L314] blastFlag = 2 [L318] COND FALSE !(ret <= 0) [L323] COND TRUE \read(s__hit) [L324] s__state = 8656 [L328] s__init_num = 0 [L641] COND FALSE !(! s__s3__tmp__reuse_message) [L670] skip = 0 [L109] COND TRUE 1 [L111] state = s__state [L112] COND FALSE !(s__state == 12292) [L115] COND FALSE !(s__state == 16384) [L118] COND FALSE !(s__state == 8192) [L121] COND FALSE !(s__state == 24576) [L124] COND FALSE !(s__state == 8195) [L127] COND FALSE !(s__state == 8480) [L130] COND FALSE !(s__state == 8481) [L133] COND FALSE !(s__state == 8482) [L136] COND FALSE !(s__state == 8464) [L139] COND FALSE !(s__state == 8465) [L142] COND FALSE !(s__state == 8466) [L145] COND FALSE !(s__state == 8496) [L148] COND FALSE !(s__state == 8497) [L151] COND FALSE !(s__state == 8512) [L154] COND FALSE !(s__state == 8513) [L157] COND FALSE !(s__state == 8528) [L160] COND FALSE !(s__state == 8529) [L163] COND FALSE !(s__state == 8544) [L166] COND FALSE !(s__state == 8545) [L169] COND FALSE !(s__state == 8560) [L172] COND FALSE !(s__state == 8561) [L175] COND FALSE !(s__state == 8448) [L178] COND FALSE !(s__state == 8576) [L181] COND FALSE !(s__state == 8577) [L184] COND FALSE !(s__state == 8592) [L187] COND FALSE !(s__state == 8593) [L190] COND FALSE !(s__state == 8608) [L193] COND FALSE !(s__state == 8609) [L196] COND FALSE !(s__state == 8640) [L199] COND FALSE !(s__state == 8641) [L202] COND TRUE s__state == 8656 [L529] s__session__cipher = s__s3__tmp__new_cipher [L530] tmp___9 = __VERIFIER_nondet_int() [L531] COND FALSE !(! tmp___9) [L537] ret = __VERIFIER_nondet_int() [L538] COND TRUE blastFlag == 2 [L539] blastFlag = 3 [L543] COND FALSE !(ret <= 0) [L548] ag_X * ag_Y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 166 locations, 12 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.5s, OverallIterations: 15, TraceHistogramMax: 3, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2514 SDtfs, 4359 SDslu, 880 SDs, 0 SdLazy, 1073 SolverSat, 360 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 239 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=652occurred in iteration=14, 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, 14 MinimizatonAttempts, 123 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 655 NumberOfCodeBlocks, 655 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 558 ConstructedInterpolants, 0 QuantifiedInterpolants, 62917 SizeOfPredicates, 4 NumberOfNonLiveVariables, 555 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 90/90 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...