./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/Binomial.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_739f59ac-ff0c-431b-8fe8-c7fc0840f035/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_739f59ac-ff0c-431b-8fe8-c7fc0840f035/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_739f59ac-ff0c-431b-8fe8-c7fc0840f035/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_739f59ac-ff0c-431b-8fe8-c7fc0840f035/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/Binomial.c -s /tmp/vcloud-vcloud-master/worker/run_dir_739f59ac-ff0c-431b-8fe8-c7fc0840f035/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_739f59ac-ff0c-431b-8fe8-c7fc0840f035/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 64bit --witnessprinter.graph.data.programhash 7271d13f0b7b365fd7ecc81e9b65f9e103181ef3 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_739f59ac-ff0c-431b-8fe8-c7fc0840f035/bin/uautomizer/config using search string *Overflow*64bit*_Bitvector*.epf No suitable settings file found using Overflow*64bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 15:16:16,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:16:16,895 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:16:16,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:16:16,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:16:16,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:16:16,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:16:16,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:16:16,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:16:16,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:16:16,955 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:16:16,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:16:16,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:16:16,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:16:16,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:16:16,963 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:16:16,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:16:16,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:16:16,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:16:16,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:16:16,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:16:16,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:16:16,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:16:16,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:16:16,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:16:16,983 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:16:16,983 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:16:16,984 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:16:16,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:16:16,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:16:16,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:16:16,988 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:16:16,989 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:16:16,990 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:16:16,992 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:16:16,992 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:16:16,993 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:16:16,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:16:16,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:16:16,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:16:16,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:16:16,998 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_739f59ac-ff0c-431b-8fe8-c7fc0840f035/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-12-01 15:16:17,022 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:16:17,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:16:17,024 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:16:17,024 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:16:17,025 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:16:17,025 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:16:17,025 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-01 15:16:17,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:16:17,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:16:17,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:16:17,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:16:17,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:16:17,028 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-01 15:16:17,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:16:17,029 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:16:17,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:16:17,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:16:17,029 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:16:17,030 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:16:17,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:16:17,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:16:17,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:16:17,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:16:17,031 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:16:17,031 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:16:17,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:16:17,032 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:16:17,032 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:16:17,032 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_739f59ac-ff0c-431b-8fe8-c7fc0840f035/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_739f59ac-ff0c-431b-8fe8-c7fc0840f035/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7271d13f0b7b365fd7ecc81e9b65f9e103181ef3 [2020-12-01 15:16:17,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:16:17,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:16:17,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:16:17,387 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:16:17,390 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:16:17,391 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_739f59ac-ff0c-431b-8fe8-c7fc0840f035/bin/uautomizer/../../sv-benchmarks/c/termination-numeric/Binomial.c [2020-12-01 15:16:17,472 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_739f59ac-ff0c-431b-8fe8-c7fc0840f035/bin/uautomizer/data/3f76e2a54/44796d06d1ec4da9be50e8f8d7e80917/FLAG2b6c51b24 [2020-12-01 15:16:17,944 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:16:17,944 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_739f59ac-ff0c-431b-8fe8-c7fc0840f035/sv-benchmarks/c/termination-numeric/Binomial.c [2020-12-01 15:16:17,951 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_739f59ac-ff0c-431b-8fe8-c7fc0840f035/bin/uautomizer/data/3f76e2a54/44796d06d1ec4da9be50e8f8d7e80917/FLAG2b6c51b24 [2020-12-01 15:16:18,339 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_739f59ac-ff0c-431b-8fe8-c7fc0840f035/bin/uautomizer/data/3f76e2a54/44796d06d1ec4da9be50e8f8d7e80917 [2020-12-01 15:16:18,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:16:18,343 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:16:18,345 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:16:18,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:16:18,350 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:16:18,351 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:16:18" (1/1) ... [2020-12-01 15:16:18,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b312ce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:18, skipping insertion in model container [2020-12-01 15:16:18,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:16:18" (1/1) ... [2020-12-01 15:16:18,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:16:18,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:16:18,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:16:18,548 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:16:18,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:16:18,616 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:16:18,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:18 WrapperNode [2020-12-01 15:16:18,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:16:18,626 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:16:18,627 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:16:18,627 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:16:18,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:18" (1/1) ... [2020-12-01 15:16:18,649 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:18" (1/1) ... [2020-12-01 15:16:18,677 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:16:18,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:16:18,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:16:18,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:16:18,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:18" (1/1) ... [2020-12-01 15:16:18,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:18" (1/1) ... [2020-12-01 15:16:18,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:18" (1/1) ... [2020-12-01 15:16:18,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:18" (1/1) ... [2020-12-01 15:16:18,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:18" (1/1) ... [2020-12-01 15:16:18,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:18" (1/1) ... [2020-12-01 15:16:18,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:18" (1/1) ... [2020-12-01 15:16:18,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:16:18,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:16:18,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:16:18,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:16:18,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_739f59ac-ff0c-431b-8fe8-c7fc0840f035/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 [2020-12-01 15:16:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure fact [2020-12-01 15:16:18,828 INFO L138 BoogieDeclarations]: Found implementation of procedure fact [2020-12-01 15:16:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:16:18,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:16:19,251 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:16:19,251 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-01 15:16:19,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:16:19 BoogieIcfgContainer [2020-12-01 15:16:19,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:16:19,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:16:19,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:16:19,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:16:19,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:16:18" (1/3) ... [2020-12-01 15:16:19,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38949a75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:16:19, skipping insertion in model container [2020-12-01 15:16:19,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:18" (2/3) ... [2020-12-01 15:16:19,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38949a75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:16:19, skipping insertion in model container [2020-12-01 15:16:19,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:16:19" (3/3) ... [2020-12-01 15:16:19,280 INFO L111 eAbstractionObserver]: Analyzing ICFG Binomial.c [2020-12-01 15:16:19,299 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:16:19,318 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 20 error locations. [2020-12-01 15:16:19,347 INFO L253 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2020-12-01 15:16:19,387 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:16:19,387 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:16:19,387 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:16:19,387 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:16:19,387 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:16:19,387 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:16:19,388 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:16:19,388 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:16:19,430 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2020-12-01 15:16:19,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-01 15:16:19,436 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:19,437 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:19,439 INFO L429 AbstractCegarLoop]: === Iteration 1 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-01 15:16:19,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:19,447 INFO L82 PathProgramCache]: Analyzing trace with hash 306418195, now seen corresponding path program 1 times [2020-12-01 15:16:19,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:19,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727276192] [2020-12-01 15:16:19,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:19,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:19,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:19,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727276192] [2020-12-01 15:16:19,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:16:19,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:16:19,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067689233] [2020-12-01 15:16:19,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 15:16:19,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:19,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 15:16:19,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:16:19,667 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 2 states. [2020-12-01 15:16:19,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:19,726 INFO L93 Difference]: Finished difference Result 139 states and 163 transitions. [2020-12-01 15:16:19,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 15:16:19,729 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-01 15:16:19,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:19,768 INFO L225 Difference]: With dead ends: 139 [2020-12-01 15:16:19,769 INFO L226 Difference]: Without dead ends: 68 [2020-12-01 15:16:19,773 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 [2020-12-01 15:16:19,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-01 15:16:19,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-12-01 15:16:19,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-01 15:16:19,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions. [2020-12-01 15:16:19,824 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 7 [2020-12-01 15:16:19,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:19,825 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions. [2020-12-01 15:16:19,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 15:16:19,825 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions. [2020-12-01 15:16:19,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-01 15:16:19,826 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:19,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:19,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:16:19,827 INFO L429 AbstractCegarLoop]: === Iteration 2 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-01 15:16:19,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:19,828 INFO L82 PathProgramCache]: Analyzing trace with hash 306365340, now seen corresponding path program 1 times [2020-12-01 15:16:19,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:19,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269909475] [2020-12-01 15:16:19,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:19,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:19,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269909475] [2020-12-01 15:16:19,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:16:19,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:16:19,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519831753] [2020-12-01 15:16:19,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:16:19,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:19,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:16:19,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:16:19,957 INFO L87 Difference]: Start difference. First operand 68 states and 77 transitions. Second operand 4 states. [2020-12-01 15:16:20,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:20,116 INFO L93 Difference]: Finished difference Result 134 states and 153 transitions. [2020-12-01 15:16:20,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:16:20,117 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-01 15:16:20,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:20,119 INFO L225 Difference]: With dead ends: 134 [2020-12-01 15:16:20,121 INFO L226 Difference]: Without dead ends: 69 [2020-12-01 15:16:20,123 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 [2020-12-01 15:16:20,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-01 15:16:20,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-12-01 15:16:20,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-12-01 15:16:20,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2020-12-01 15:16:20,158 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 7 [2020-12-01 15:16:20,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:20,158 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2020-12-01 15:16:20,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:16:20,159 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2020-12-01 15:16:20,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 15:16:20,160 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:20,160 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:20,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 15:16:20,161 INFO L429 AbstractCegarLoop]: === Iteration 3 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-01 15:16:20,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:20,162 INFO L82 PathProgramCache]: Analyzing trace with hash 154399188, now seen corresponding path program 1 times [2020-12-01 15:16:20,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:20,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822441769] [2020-12-01 15:16:20,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:20,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:20,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822441769] [2020-12-01 15:16:20,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:16:20,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:16:20,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127400128] [2020-12-01 15:16:20,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:16:20,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:20,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:16:20,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:16:20,205 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand 4 states. [2020-12-01 15:16:20,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:20,390 INFO L93 Difference]: Finished difference Result 198 states and 225 transitions. [2020-12-01 15:16:20,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:16:20,391 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-01 15:16:20,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:20,393 INFO L225 Difference]: With dead ends: 198 [2020-12-01 15:16:20,394 INFO L226 Difference]: Without dead ends: 132 [2020-12-01 15:16:20,395 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 [2020-12-01 15:16:20,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-12-01 15:16:20,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 72. [2020-12-01 15:16:20,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-01 15:16:20,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2020-12-01 15:16:20,412 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 10 [2020-12-01 15:16:20,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:20,412 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2020-12-01 15:16:20,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:16:20,413 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2020-12-01 15:16:20,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 15:16:20,413 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:20,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:20,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 15:16:20,414 INFO L429 AbstractCegarLoop]: === Iteration 4 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-01 15:16:20,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:20,415 INFO L82 PathProgramCache]: Analyzing trace with hash 133902980, now seen corresponding path program 1 times [2020-12-01 15:16:20,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:20,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136163995] [2020-12-01 15:16:20,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:20,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:20,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136163995] [2020-12-01 15:16:20,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:16:20,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-01 15:16:20,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380521745] [2020-12-01 15:16:20,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:16:20,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:20,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:16:20,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:16:20,498 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand 6 states. [2020-12-01 15:16:20,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:20,739 INFO L93 Difference]: Finished difference Result 209 states and 250 transitions. [2020-12-01 15:16:20,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 15:16:20,740 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-01 15:16:20,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:20,751 INFO L225 Difference]: With dead ends: 209 [2020-12-01 15:16:20,752 INFO L226 Difference]: Without dead ends: 143 [2020-12-01 15:16:20,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:16:20,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-12-01 15:16:20,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 107. [2020-12-01 15:16:20,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-12-01 15:16:20,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 137 transitions. [2020-12-01 15:16:20,805 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 137 transitions. Word has length 10 [2020-12-01 15:16:20,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:20,806 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 137 transitions. [2020-12-01 15:16:20,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:16:20,807 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 137 transitions. [2020-12-01 15:16:20,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 15:16:20,807 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:20,808 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:20,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-01 15:16:20,808 INFO L429 AbstractCegarLoop]: === Iteration 5 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-01 15:16:20,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:20,810 INFO L82 PathProgramCache]: Analyzing trace with hash -2023579039, now seen corresponding path program 1 times [2020-12-01 15:16:20,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:20,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763561438] [2020-12-01 15:16:20,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:20,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-01 15:16:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:20,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:20,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763561438] [2020-12-01 15:16:20,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:16:20,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-01 15:16:20,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633905370] [2020-12-01 15:16:20,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:16:20,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:20,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:16:20,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:16:20,905 INFO L87 Difference]: Start difference. First operand 107 states and 137 transitions. Second operand 6 states. [2020-12-01 15:16:21,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:21,096 INFO L93 Difference]: Finished difference Result 286 states and 388 transitions. [2020-12-01 15:16:21,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 15:16:21,097 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-01 15:16:21,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:21,103 INFO L225 Difference]: With dead ends: 286 [2020-12-01 15:16:21,103 INFO L226 Difference]: Without dead ends: 185 [2020-12-01 15:16:21,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:16:21,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-12-01 15:16:21,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 121. [2020-12-01 15:16:21,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-12-01 15:16:21,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 157 transitions. [2020-12-01 15:16:21,155 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 157 transitions. Word has length 16 [2020-12-01 15:16:21,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:21,156 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 157 transitions. [2020-12-01 15:16:21,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:16:21,156 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 157 transitions. [2020-12-01 15:16:21,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-01 15:16:21,157 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:21,157 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:21,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-01 15:16:21,158 INFO L429 AbstractCegarLoop]: === Iteration 6 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-01 15:16:21,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:21,159 INFO L82 PathProgramCache]: Analyzing trace with hash -282699610, now seen corresponding path program 1 times [2020-12-01 15:16:21,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:21,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714305774] [2020-12-01 15:16:21,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:21,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:21,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-01 15:16:21,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:21,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-01 15:16:21,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:21,246 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-01 15:16:21,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714305774] [2020-12-01 15:16:21,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:16:21,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:16:21,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117976891] [2020-12-01 15:16:21,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:16:21,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:21,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:16:21,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:16:21,250 INFO L87 Difference]: Start difference. First operand 121 states and 157 transitions. Second operand 5 states. [2020-12-01 15:16:21,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:21,390 INFO L93 Difference]: Finished difference Result 181 states and 207 transitions. [2020-12-01 15:16:21,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-01 15:16:21,391 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-12-01 15:16:21,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:21,393 INFO L225 Difference]: With dead ends: 181 [2020-12-01 15:16:21,394 INFO L226 Difference]: Without dead ends: 180 [2020-12-01 15:16:21,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:16:21,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-12-01 15:16:21,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 123. [2020-12-01 15:16:21,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-12-01 15:16:21,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 159 transitions. [2020-12-01 15:16:21,415 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 159 transitions. Word has length 19 [2020-12-01 15:16:21,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:21,415 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 159 transitions. [2020-12-01 15:16:21,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:16:21,416 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 159 transitions. [2020-12-01 15:16:21,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-01 15:16:21,421 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:21,421 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:21,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-01 15:16:21,422 INFO L429 AbstractCegarLoop]: === Iteration 7 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-01 15:16:21,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:21,422 INFO L82 PathProgramCache]: Analyzing trace with hash -173753234, now seen corresponding path program 1 times [2020-12-01 15:16:21,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:21,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846048188] [2020-12-01 15:16:21,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:21,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:21,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-01 15:16:21,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:21,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-01 15:16:21,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:21,520 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-01 15:16:21,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846048188] [2020-12-01 15:16:21,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:16:21,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:16:21,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33638255] [2020-12-01 15:16:21,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:16:21,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:21,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:16:21,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:16:21,524 INFO L87 Difference]: Start difference. First operand 123 states and 159 transitions. Second operand 5 states. [2020-12-01 15:16:21,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:21,697 INFO L93 Difference]: Finished difference Result 150 states and 174 transitions. [2020-12-01 15:16:21,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 15:16:21,699 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-12-01 15:16:21,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:21,702 INFO L225 Difference]: With dead ends: 150 [2020-12-01 15:16:21,702 INFO L226 Difference]: Without dead ends: 148 [2020-12-01 15:16:21,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:16:21,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-12-01 15:16:21,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 121. [2020-12-01 15:16:21,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-12-01 15:16:21,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 155 transitions. [2020-12-01 15:16:21,731 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 155 transitions. Word has length 20 [2020-12-01 15:16:21,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:21,732 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 155 transitions. [2020-12-01 15:16:21,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:16:21,733 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 155 transitions. [2020-12-01 15:16:21,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-01 15:16:21,735 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:21,735 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:21,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-01 15:16:21,736 INFO L429 AbstractCegarLoop]: === Iteration 8 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-01 15:16:21,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:21,737 INFO L82 PathProgramCache]: Analyzing trace with hash -482951234, now seen corresponding path program 1 times [2020-12-01 15:16:21,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:21,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020491227] [2020-12-01 15:16:21,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:21,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:21,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-01 15:16:21,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:21,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-01 15:16:21,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:21,874 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-01 15:16:21,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020491227] [2020-12-01 15:16:21,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:16:21,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-01 15:16:21,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634960424] [2020-12-01 15:16:21,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 15:16:21,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:21,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 15:16:21,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:16:21,877 INFO L87 Difference]: Start difference. First operand 121 states and 155 transitions. Second operand 7 states. [2020-12-01 15:16:22,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:22,110 INFO L93 Difference]: Finished difference Result 291 states and 363 transitions. [2020-12-01 15:16:22,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-01 15:16:22,114 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-12-01 15:16:22,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:22,120 INFO L225 Difference]: With dead ends: 291 [2020-12-01 15:16:22,120 INFO L226 Difference]: Without dead ends: 181 [2020-12-01 15:16:22,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-01 15:16:22,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-12-01 15:16:22,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 127. [2020-12-01 15:16:22,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-12-01 15:16:22,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 161 transitions. [2020-12-01 15:16:22,166 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 161 transitions. Word has length 24 [2020-12-01 15:16:22,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:22,167 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 161 transitions. [2020-12-01 15:16:22,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 15:16:22,167 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 161 transitions. [2020-12-01 15:16:22,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-01 15:16:22,169 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:22,169 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:22,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-01 15:16:22,170 INFO L429 AbstractCegarLoop]: === Iteration 9 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-01 15:16:22,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:22,172 INFO L82 PathProgramCache]: Analyzing trace with hash 539716203, now seen corresponding path program 1 times [2020-12-01 15:16:22,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:22,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817293468] [2020-12-01 15:16:22,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:22,196 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:22,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2061429016] [2020-12-01 15:16:22,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_739f59ac-ff0c-431b-8fe8-c7fc0840f035/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 [2020-12-01 15:16:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:22,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-01 15:16:22,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:22,386 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-01 15:16:22,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817293468] [2020-12-01 15:16:22,387 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:22,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061429016] [2020-12-01 15:16:22,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:16:22,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:16:22,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479922090] [2020-12-01 15:16:22,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:16:22,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:22,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:16:22,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:16:22,390 INFO L87 Difference]: Start difference. First operand 127 states and 161 transitions. Second operand 5 states. [2020-12-01 15:16:22,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:22,597 INFO L93 Difference]: Finished difference Result 203 states and 276 transitions. [2020-12-01 15:16:22,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:16:22,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-12-01 15:16:22,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:22,606 INFO L225 Difference]: With dead ends: 203 [2020-12-01 15:16:22,606 INFO L226 Difference]: Without dead ends: 199 [2020-12-01 15:16:22,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:16:22,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-12-01 15:16:22,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 157. [2020-12-01 15:16:22,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-12-01 15:16:22,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 216 transitions. [2020-12-01 15:16:22,641 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 216 transitions. Word has length 27 [2020-12-01 15:16:22,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:22,644 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 216 transitions. [2020-12-01 15:16:22,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:16:22,645 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 216 transitions. [2020-12-01 15:16:22,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-01 15:16:22,646 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:22,646 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:22,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-01 15:16:22,865 INFO L429 AbstractCegarLoop]: === Iteration 10 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-01 15:16:22,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:22,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1023768851, now seen corresponding path program 1 times [2020-12-01 15:16:22,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:22,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743498227] [2020-12-01 15:16:22,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:22,888 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:22,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1216809706] [2020-12-01 15:16:22,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_739f59ac-ff0c-431b-8fe8-c7fc0840f035/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 [2020-12-01 15:16:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:22,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-01 15:16:22,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:23,141 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-01 15:16:23,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743498227] [2020-12-01 15:16:23,142 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:23,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216809706] [2020-12-01 15:16:23,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:16:23,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-01 15:16:23,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745342884] [2020-12-01 15:16:23,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 15:16:23,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:23,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 15:16:23,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:16:23,144 INFO L87 Difference]: Start difference. First operand 157 states and 216 transitions. Second operand 7 states. [2020-12-01 15:16:23,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:23,396 INFO L93 Difference]: Finished difference Result 267 states and 364 transitions. [2020-12-01 15:16:23,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 15:16:23,397 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-12-01 15:16:23,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:23,402 INFO L225 Difference]: With dead ends: 267 [2020-12-01 15:16:23,402 INFO L226 Difference]: Without dead ends: 263 [2020-12-01 15:16:23,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:16:23,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-12-01 15:16:23,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 196. [2020-12-01 15:16:23,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-12-01 15:16:23,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 272 transitions. [2020-12-01 15:16:23,438 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 272 transitions. Word has length 29 [2020-12-01 15:16:23,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:23,438 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 272 transitions. [2020-12-01 15:16:23,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 15:16:23,439 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 272 transitions. [2020-12-01 15:16:23,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-01 15:16:23,443 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:23,444 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:23,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-01 15:16:23,661 INFO L429 AbstractCegarLoop]: === Iteration 11 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-01 15:16:23,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:23,661 INFO L82 PathProgramCache]: Analyzing trace with hash 595557041, now seen corresponding path program 1 times [2020-12-01 15:16:23,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:23,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754136710] [2020-12-01 15:16:23,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:23,676 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:23,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [877298362] [2020-12-01 15:16:23,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_739f59ac-ff0c-431b-8fe8-c7fc0840f035/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 [2020-12-01 15:16:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:23,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-01 15:16:23,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:23,815 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-01 15:16:23,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754136710] [2020-12-01 15:16:23,815 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:23,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877298362] [2020-12-01 15:16:23,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:16:23,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:16:23,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598952455] [2020-12-01 15:16:23,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:16:23,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:23,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:16:23,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:16:23,819 INFO L87 Difference]: Start difference. First operand 196 states and 272 transitions. Second operand 4 states. [2020-12-01 15:16:23,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:23,876 INFO L93 Difference]: Finished difference Result 264 states and 352 transitions. [2020-12-01 15:16:23,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:16:23,877 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-12-01 15:16:23,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:23,880 INFO L225 Difference]: With dead ends: 264 [2020-12-01 15:16:23,880 INFO L226 Difference]: Without dead ends: 263 [2020-12-01 15:16:23,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:16:23,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-12-01 15:16:23,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 250. [2020-12-01 15:16:23,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-12-01 15:16:23,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 346 transitions. [2020-12-01 15:16:23,911 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 346 transitions. Word has length 33 [2020-12-01 15:16:23,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:23,913 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 346 transitions. [2020-12-01 15:16:23,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:16:23,914 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 346 transitions. [2020-12-01 15:16:23,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-01 15:16:23,921 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:23,921 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:24,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-01 15:16:24,149 INFO L429 AbstractCegarLoop]: === Iteration 12 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-01 15:16:24,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:24,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1282399211, now seen corresponding path program 1 times [2020-12-01 15:16:24,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:24,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220060746] [2020-12-01 15:16:24,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:24,158 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:24,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2029172055] [2020-12-01 15:16:24,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_739f59ac-ff0c-431b-8fe8-c7fc0840f035/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 [2020-12-01 15:16:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:24,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-01 15:16:24,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:24,267 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-01 15:16:24,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220060746] [2020-12-01 15:16:24,267 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:24,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029172055] [2020-12-01 15:16:24,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:16:24,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:16:24,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703436980] [2020-12-01 15:16:24,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:16:24,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:24,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:16:24,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:16:24,270 INFO L87 Difference]: Start difference. First operand 250 states and 346 transitions. Second operand 4 states. [2020-12-01 15:16:24,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:24,306 INFO L93 Difference]: Finished difference Result 250 states and 346 transitions. [2020-12-01 15:16:24,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:16:24,307 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-12-01 15:16:24,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:24,310 INFO L225 Difference]: With dead ends: 250 [2020-12-01 15:16:24,310 INFO L226 Difference]: Without dead ends: 249 [2020-12-01 15:16:24,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:16:24,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-12-01 15:16:24,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2020-12-01 15:16:24,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-12-01 15:16:24,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 344 transitions. [2020-12-01 15:16:24,334 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 344 transitions. Word has length 34 [2020-12-01 15:16:24,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:24,334 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 344 transitions. [2020-12-01 15:16:24,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:16:24,334 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 344 transitions. [2020-12-01 15:16:24,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-01 15:16:24,335 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:24,335 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:24,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:24,549 INFO L429 AbstractCegarLoop]: === Iteration 13 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-01 15:16:24,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:24,549 INFO L82 PathProgramCache]: Analyzing trace with hash 220869310, now seen corresponding path program 1 times [2020-12-01 15:16:24,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:24,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301739082] [2020-12-01 15:16:24,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:24,558 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:24,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [182499703] [2020-12-01 15:16:24,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_739f59ac-ff0c-431b-8fe8-c7fc0840f035/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:24,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:24,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-01 15:16:24,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:24,658 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-01 15:16:24,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301739082] [2020-12-01 15:16:24,659 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:24,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182499703] [2020-12-01 15:16:24,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:16:24,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:16:24,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951384440] [2020-12-01 15:16:24,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:16:24,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:24,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:16:24,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:16:24,661 INFO L87 Difference]: Start difference. First operand 249 states and 344 transitions. Second operand 4 states. [2020-12-01 15:16:24,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:24,730 INFO L93 Difference]: Finished difference Result 265 states and 349 transitions. [2020-12-01 15:16:24,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:16:24,731 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-12-01 15:16:24,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:24,733 INFO L225 Difference]: With dead ends: 265 [2020-12-01 15:16:24,733 INFO L226 Difference]: Without dead ends: 264 [2020-12-01 15:16:24,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:16:24,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-12-01 15:16:24,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 251. [2020-12-01 15:16:24,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-12-01 15:16:24,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 346 transitions. [2020-12-01 15:16:24,762 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 346 transitions. Word has length 37 [2020-12-01 15:16:24,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:24,763 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 346 transitions. [2020-12-01 15:16:24,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:16:24,763 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 346 transitions. [2020-12-01 15:16:24,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-01 15:16:24,764 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:24,764 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:24,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-01 15:16:24,993 INFO L429 AbstractCegarLoop]: === Iteration 14 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-01 15:16:24,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:24,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1742985850, now seen corresponding path program 1 times [2020-12-01 15:16:24,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:24,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754768803] [2020-12-01 15:16:24,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:25,002 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:25,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1036398020] [2020-12-01 15:16:25,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_739f59ac-ff0c-431b-8fe8-c7fc0840f035/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:25,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-01 15:16:25,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:25,124 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-01 15:16:25,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754768803] [2020-12-01 15:16:25,124 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:25,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036398020] [2020-12-01 15:16:25,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:16:25,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:16:25,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230224799] [2020-12-01 15:16:25,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:16:25,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:25,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:16:25,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:16:25,127 INFO L87 Difference]: Start difference. First operand 251 states and 346 transitions. Second operand 4 states. [2020-12-01 15:16:25,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:25,163 INFO L93 Difference]: Finished difference Result 251 states and 346 transitions. [2020-12-01 15:16:25,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:16:25,164 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-12-01 15:16:25,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:25,167 INFO L225 Difference]: With dead ends: 251 [2020-12-01 15:16:25,167 INFO L226 Difference]: Without dead ends: 250 [2020-12-01 15:16:25,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:16:25,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-12-01 15:16:25,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2020-12-01 15:16:25,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-12-01 15:16:25,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 345 transitions. [2020-12-01 15:16:25,191 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 345 transitions. Word has length 38 [2020-12-01 15:16:25,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:25,192 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 345 transitions. [2020-12-01 15:16:25,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:16:25,192 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 345 transitions. [2020-12-01 15:16:25,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-01 15:16:25,193 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:25,193 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 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] [2020-12-01 15:16:25,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:25,407 INFO L429 AbstractCegarLoop]: === Iteration 15 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-01 15:16:25,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:25,407 INFO L82 PathProgramCache]: Analyzing trace with hash 57775986, now seen corresponding path program 1 times [2020-12-01 15:16:25,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:25,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007758180] [2020-12-01 15:16:25,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:25,416 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:25,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1652560016] [2020-12-01 15:16:25,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_739f59ac-ff0c-431b-8fe8-c7fc0840f035/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:25,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-01 15:16:25,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:25,594 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-01 15:16:25,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007758180] [2020-12-01 15:16:25,596 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:25,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652560016] [2020-12-01 15:16:25,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:25,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-01 15:16:25,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115540042] [2020-12-01 15:16:25,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 15:16:25,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:25,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 15:16:25,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:16:25,599 INFO L87 Difference]: Start difference. First operand 250 states and 345 transitions. Second operand 8 states. [2020-12-01 15:16:25,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:25,901 INFO L93 Difference]: Finished difference Result 451 states and 610 transitions. [2020-12-01 15:16:25,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-01 15:16:25,902 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-12-01 15:16:25,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:25,906 INFO L225 Difference]: With dead ends: 451 [2020-12-01 15:16:25,907 INFO L226 Difference]: Without dead ends: 450 [2020-12-01 15:16:25,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-12-01 15:16:25,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2020-12-01 15:16:25,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 270. [2020-12-01 15:16:25,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-12-01 15:16:25,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 377 transitions. [2020-12-01 15:16:25,943 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 377 transitions. Word has length 40 [2020-12-01 15:16:25,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:25,945 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 377 transitions. [2020-12-01 15:16:25,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 15:16:25,945 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 377 transitions. [2020-12-01 15:16:25,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-01 15:16:25,946 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:25,946 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 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] [2020-12-01 15:16:26,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-01 15:16:26,161 INFO L429 AbstractCegarLoop]: === Iteration 16 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-01 15:16:26,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:26,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1791055604, now seen corresponding path program 1 times [2020-12-01 15:16:26,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:26,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077185642] [2020-12-01 15:16:26,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:26,168 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:26,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [538552259] [2020-12-01 15:16:26,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_739f59ac-ff0c-431b-8fe8-c7fc0840f035/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:26,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-01 15:16:26,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:26,274 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-01 15:16:26,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077185642] [2020-12-01 15:16:26,274 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:26,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538552259] [2020-12-01 15:16:26,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:16:26,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:16:26,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774737470] [2020-12-01 15:16:26,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:16:26,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:26,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:16:26,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:16:26,280 INFO L87 Difference]: Start difference. First operand 270 states and 377 transitions. Second operand 3 states. [2020-12-01 15:16:26,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:26,309 INFO L93 Difference]: Finished difference Result 270 states and 377 transitions. [2020-12-01 15:16:26,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:16:26,310 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-12-01 15:16:26,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:26,313 INFO L225 Difference]: With dead ends: 270 [2020-12-01 15:16:26,313 INFO L226 Difference]: Without dead ends: 269 [2020-12-01 15:16:26,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:16:26,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-12-01 15:16:26,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2020-12-01 15:16:26,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-12-01 15:16:26,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 375 transitions. [2020-12-01 15:16:26,340 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 375 transitions. Word has length 41 [2020-12-01 15:16:26,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:26,340 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 375 transitions. [2020-12-01 15:16:26,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:16:26,341 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 375 transitions. [2020-12-01 15:16:26,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-01 15:16:26,342 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:26,342 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 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] [2020-12-01 15:16:26,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-01 15:16:26,558 INFO L429 AbstractCegarLoop]: === Iteration 17 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-01 15:16:26,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:26,559 INFO L82 PathProgramCache]: Analyzing trace with hash 724802482, now seen corresponding path program 1 times [2020-12-01 15:16:26,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:26,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446464837] [2020-12-01 15:16:26,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:26,567 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:26,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [313595276] [2020-12-01 15:16:26,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_739f59ac-ff0c-431b-8fe8-c7fc0840f035/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:26,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:26,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-01 15:16:26,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:26,807 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-01 15:16:26,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446464837] [2020-12-01 15:16:26,807 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:26,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313595276] [2020-12-01 15:16:26,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:26,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-01 15:16:26,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343949934] [2020-12-01 15:16:26,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 15:16:26,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:26,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 15:16:26,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:16:26,814 INFO L87 Difference]: Start difference. First operand 269 states and 375 transitions. Second operand 9 states. [2020-12-01 15:16:27,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:27,053 INFO L93 Difference]: Finished difference Result 527 states and 708 transitions. [2020-12-01 15:16:27,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-01 15:16:27,053 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-12-01 15:16:27,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:27,057 INFO L225 Difference]: With dead ends: 527 [2020-12-01 15:16:27,057 INFO L226 Difference]: Without dead ends: 347 [2020-12-01 15:16:27,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-12-01 15:16:27,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2020-12-01 15:16:27,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 269. [2020-12-01 15:16:27,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-12-01 15:16:27,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 374 transitions. [2020-12-01 15:16:27,095 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 374 transitions. Word has length 45 [2020-12-01 15:16:27,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:27,095 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 374 transitions. [2020-12-01 15:16:27,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 15:16:27,096 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 374 transitions. [2020-12-01 15:16:27,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-01 15:16:27,098 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:27,098 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 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] [2020-12-01 15:16:27,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-01 15:16:27,325 INFO L429 AbstractCegarLoop]: === Iteration 18 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-01 15:16:27,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:27,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1157697575, now seen corresponding path program 1 times [2020-12-01 15:16:27,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:27,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736199591] [2020-12-01 15:16:27,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:27,333 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:27,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2093379200] [2020-12-01 15:16:27,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_739f59ac-ff0c-431b-8fe8-c7fc0840f035/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:27,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-01 15:16:27,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:27,558 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-01 15:16:27,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736199591] [2020-12-01 15:16:27,559 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:27,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093379200] [2020-12-01 15:16:27,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:16:27,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-01 15:16:27,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508711397] [2020-12-01 15:16:27,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 15:16:27,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:27,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 15:16:27,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:16:27,570 INFO L87 Difference]: Start difference. First operand 269 states and 374 transitions. Second operand 8 states. [2020-12-01 15:16:27,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:27,891 INFO L93 Difference]: Finished difference Result 472 states and 641 transitions. [2020-12-01 15:16:27,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-01 15:16:27,894 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-12-01 15:16:27,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:27,897 INFO L225 Difference]: With dead ends: 472 [2020-12-01 15:16:27,897 INFO L226 Difference]: Without dead ends: 231 [2020-12-01 15:16:27,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-12-01 15:16:27,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-12-01 15:16:27,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 214. [2020-12-01 15:16:27,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-12-01 15:16:27,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 284 transitions. [2020-12-01 15:16:27,919 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 284 transitions. Word has length 46 [2020-12-01 15:16:27,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:27,919 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 284 transitions. [2020-12-01 15:16:27,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 15:16:27,920 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 284 transitions. [2020-12-01 15:16:27,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-01 15:16:27,921 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:27,921 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 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] [2020-12-01 15:16:28,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-01 15:16:28,149 INFO L429 AbstractCegarLoop]: === Iteration 19 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-01 15:16:28,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:28,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1962570407, now seen corresponding path program 1 times [2020-12-01 15:16:28,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:28,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511978342] [2020-12-01 15:16:28,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:28,157 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:28,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1332265506] [2020-12-01 15:16:28,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_739f59ac-ff0c-431b-8fe8-c7fc0840f035/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:28,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:28,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-01 15:16:28,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:28,353 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-01 15:16:28,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511978342] [2020-12-01 15:16:28,353 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:28,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332265506] [2020-12-01 15:16:28,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:28,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-01 15:16:28,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671745676] [2020-12-01 15:16:28,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 15:16:28,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:28,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 15:16:28,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-01 15:16:28,355 INFO L87 Difference]: Start difference. First operand 214 states and 284 transitions. Second operand 10 states. [2020-12-01 15:16:28,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:28,728 INFO L93 Difference]: Finished difference Result 342 states and 436 transitions. [2020-12-01 15:16:28,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-01 15:16:28,729 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-12-01 15:16:28,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:28,735 INFO L225 Difference]: With dead ends: 342 [2020-12-01 15:16:28,735 INFO L226 Difference]: Without dead ends: 338 [2020-12-01 15:16:28,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2020-12-01 15:16:28,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-12-01 15:16:28,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 227. [2020-12-01 15:16:28,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-12-01 15:16:28,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 300 transitions. [2020-12-01 15:16:28,760 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 300 transitions. Word has length 48 [2020-12-01 15:16:28,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:28,760 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 300 transitions. [2020-12-01 15:16:28,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 15:16:28,761 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 300 transitions. [2020-12-01 15:16:28,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-01 15:16:28,761 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:28,761 INFO L422 BasicCegarLoop]: trace histogram [6, 4, 4, 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] [2020-12-01 15:16:28,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:28,962 INFO L429 AbstractCegarLoop]: === Iteration 20 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-01 15:16:28,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:28,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1293628687, now seen corresponding path program 2 times [2020-12-01 15:16:28,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:28,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536134364] [2020-12-01 15:16:28,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:28,971 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:28,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [326843446] [2020-12-01 15:16:28,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_739f59ac-ff0c-431b-8fe8-c7fc0840f035/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:29,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 15:16:29,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:16:29,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-01 15:16:29,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:29,165 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-01 15:16:29,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536134364] [2020-12-01 15:16:29,166 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:29,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326843446] [2020-12-01 15:16:29,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:29,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-01 15:16:29,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503071722] [2020-12-01 15:16:29,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 15:16:29,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:29,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 15:16:29,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-01 15:16:29,169 INFO L87 Difference]: Start difference. First operand 227 states and 300 transitions. Second operand 10 states. [2020-12-01 15:16:29,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:29,557 INFO L93 Difference]: Finished difference Result 541 states and 708 transitions. [2020-12-01 15:16:29,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-01 15:16:29,558 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 53 [2020-12-01 15:16:29,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:29,561 INFO L225 Difference]: With dead ends: 541 [2020-12-01 15:16:29,561 INFO L226 Difference]: Without dead ends: 347 [2020-12-01 15:16:29,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-12-01 15:16:29,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2020-12-01 15:16:29,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 228. [2020-12-01 15:16:29,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-12-01 15:16:29,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 296 transitions. [2020-12-01 15:16:29,587 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 296 transitions. Word has length 53 [2020-12-01 15:16:29,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:29,588 INFO L481 AbstractCegarLoop]: Abstraction has 228 states and 296 transitions. [2020-12-01 15:16:29,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 15:16:29,588 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 296 transitions. [2020-12-01 15:16:29,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-01 15:16:29,589 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:29,589 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 4, 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] [2020-12-01 15:16:29,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:29,816 INFO L429 AbstractCegarLoop]: === Iteration 21 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-01 15:16:29,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:29,817 INFO L82 PathProgramCache]: Analyzing trace with hash 448565911, now seen corresponding path program 1 times [2020-12-01 15:16:29,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:29,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337807744] [2020-12-01 15:16:29,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:29,824 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:29,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [499757417] [2020-12-01 15:16:29,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_739f59ac-ff0c-431b-8fe8-c7fc0840f035/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:29,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:29,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-01 15:16:29,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:29,985 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-12-01 15:16:29,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337807744] [2020-12-01 15:16:29,986 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:29,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499757417] [2020-12-01 15:16:29,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:16:29,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-01 15:16:29,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089131093] [2020-12-01 15:16:29,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:16:29,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:29,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:16:29,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:16:29,988 INFO L87 Difference]: Start difference. First operand 228 states and 296 transitions. Second operand 6 states. [2020-12-01 15:16:30,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:30,118 INFO L93 Difference]: Finished difference Result 437 states and 562 transitions. [2020-12-01 15:16:30,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 15:16:30,119 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-12-01 15:16:30,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:30,121 INFO L225 Difference]: With dead ends: 437 [2020-12-01 15:16:30,122 INFO L226 Difference]: Without dead ends: 242 [2020-12-01 15:16:30,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:16:30,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-12-01 15:16:30,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 232. [2020-12-01 15:16:30,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-12-01 15:16:30,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 294 transitions. [2020-12-01 15:16:30,145 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 294 transitions. Word has length 56 [2020-12-01 15:16:30,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:30,145 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 294 transitions. [2020-12-01 15:16:30,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:16:30,145 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 294 transitions. [2020-12-01 15:16:30,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-01 15:16:30,146 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:30,147 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 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] [2020-12-01 15:16:30,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-01 15:16:30,363 INFO L429 AbstractCegarLoop]: === Iteration 22 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-01 15:16:30,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:30,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1583287798, now seen corresponding path program 1 times [2020-12-01 15:16:30,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:30,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064025620] [2020-12-01 15:16:30,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:30,371 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:30,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [636542667] [2020-12-01 15:16:30,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_739f59ac-ff0c-431b-8fe8-c7fc0840f035/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:30,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-01 15:16:30,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:30,556 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-12-01 15:16:30,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064025620] [2020-12-01 15:16:30,557 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:30,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636542667] [2020-12-01 15:16:30,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:30,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-01 15:16:30,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899103334] [2020-12-01 15:16:30,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 15:16:30,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:30,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 15:16:30,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:16:30,560 INFO L87 Difference]: Start difference. First operand 232 states and 294 transitions. Second operand 7 states. [2020-12-01 15:16:30,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:30,721 INFO L93 Difference]: Finished difference Result 271 states and 332 transitions. [2020-12-01 15:16:30,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-01 15:16:30,722 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2020-12-01 15:16:30,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:30,725 INFO L225 Difference]: With dead ends: 271 [2020-12-01 15:16:30,725 INFO L226 Difference]: Without dead ends: 270 [2020-12-01 15:16:30,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-12-01 15:16:30,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-12-01 15:16:30,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 236. [2020-12-01 15:16:30,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-12-01 15:16:30,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 299 transitions. [2020-12-01 15:16:30,748 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 299 transitions. Word has length 59 [2020-12-01 15:16:30,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:30,749 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 299 transitions. [2020-12-01 15:16:30,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 15:16:30,749 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 299 transitions. [2020-12-01 15:16:30,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-01 15:16:30,750 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:30,750 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 5, 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] [2020-12-01 15:16:30,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:30,976 INFO L429 AbstractCegarLoop]: === Iteration 23 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-01 15:16:30,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:30,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1646027842, now seen corresponding path program 1 times [2020-12-01 15:16:30,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:30,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857699755] [2020-12-01 15:16:30,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:30,985 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:30,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1107161612] [2020-12-01 15:16:30,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_739f59ac-ff0c-431b-8fe8-c7fc0840f035/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:31,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-01 15:16:31,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:31,211 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-12-01 15:16:31,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857699755] [2020-12-01 15:16:31,212 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:31,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107161612] [2020-12-01 15:16:31,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:31,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-01 15:16:31,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230368529] [2020-12-01 15:16:31,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 15:16:31,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:31,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 15:16:31,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:16:31,214 INFO L87 Difference]: Start difference. First operand 236 states and 299 transitions. Second operand 9 states. [2020-12-01 15:16:31,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:31,518 INFO L93 Difference]: Finished difference Result 299 states and 360 transitions. [2020-12-01 15:16:31,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-01 15:16:31,518 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-12-01 15:16:31,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:31,521 INFO L225 Difference]: With dead ends: 299 [2020-12-01 15:16:31,522 INFO L226 Difference]: Without dead ends: 298 [2020-12-01 15:16:31,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-12-01 15:16:31,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-01 15:16:31,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 264. [2020-12-01 15:16:31,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-12-01 15:16:31,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 331 transitions. [2020-12-01 15:16:31,544 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 331 transitions. Word has length 64 [2020-12-01 15:16:31,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:31,545 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 331 transitions. [2020-12-01 15:16:31,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 15:16:31,545 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 331 transitions. [2020-12-01 15:16:31,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-01 15:16:31,546 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:31,546 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:31,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-01 15:16:31,760 INFO L429 AbstractCegarLoop]: === Iteration 24 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-01 15:16:31,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:31,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1045826931, now seen corresponding path program 1 times [2020-12-01 15:16:31,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:31,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467952588] [2020-12-01 15:16:31,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:31,767 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:31,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1300752528] [2020-12-01 15:16:31,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_739f59ac-ff0c-431b-8fe8-c7fc0840f035/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:31,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-01 15:16:31,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:31,968 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-12-01 15:16:31,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467952588] [2020-12-01 15:16:31,969 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:31,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300752528] [2020-12-01 15:16:31,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:16:31,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-01 15:16:31,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078804979] [2020-12-01 15:16:31,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 15:16:31,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:31,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 15:16:31,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:16:31,971 INFO L87 Difference]: Start difference. First operand 264 states and 331 transitions. Second operand 9 states. [2020-12-01 15:16:32,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:32,278 INFO L93 Difference]: Finished difference Result 466 states and 589 transitions. [2020-12-01 15:16:32,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-01 15:16:32,278 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-12-01 15:16:32,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:32,281 INFO L225 Difference]: With dead ends: 466 [2020-12-01 15:16:32,282 INFO L226 Difference]: Without dead ends: 271 [2020-12-01 15:16:32,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-12-01 15:16:32,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-12-01 15:16:32,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 261. [2020-12-01 15:16:32,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-12-01 15:16:32,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 326 transitions. [2020-12-01 15:16:32,304 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 326 transitions. Word has length 69 [2020-12-01 15:16:32,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:32,305 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 326 transitions. [2020-12-01 15:16:32,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 15:16:32,305 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 326 transitions. [2020-12-01 15:16:32,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-01 15:16:32,306 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:32,306 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 6, 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] [2020-12-01 15:16:32,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:32,528 INFO L429 AbstractCegarLoop]: === Iteration 25 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-01 15:16:32,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:32,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1450932827, now seen corresponding path program 1 times [2020-12-01 15:16:32,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:32,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589293043] [2020-12-01 15:16:32,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:32,536 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:32,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1832869610] [2020-12-01 15:16:32,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_739f59ac-ff0c-431b-8fe8-c7fc0840f035/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:32,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-01 15:16:32,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:32,779 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 29 proven. 4 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-12-01 15:16:32,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589293043] [2020-12-01 15:16:32,780 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:32,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832869610] [2020-12-01 15:16:32,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:32,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-01 15:16:32,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750779106] [2020-12-01 15:16:32,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-01 15:16:32,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:32,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-01 15:16:32,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-12-01 15:16:32,782 INFO L87 Difference]: Start difference. First operand 261 states and 326 transitions. Second operand 11 states. [2020-12-01 15:16:33,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:33,093 INFO L93 Difference]: Finished difference Result 297 states and 356 transitions. [2020-12-01 15:16:33,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-01 15:16:33,094 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 72 [2020-12-01 15:16:33,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:33,097 INFO L225 Difference]: With dead ends: 297 [2020-12-01 15:16:33,097 INFO L226 Difference]: Without dead ends: 296 [2020-12-01 15:16:33,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-12-01 15:16:33,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-12-01 15:16:33,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 263. [2020-12-01 15:16:33,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-12-01 15:16:33,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 328 transitions. [2020-12-01 15:16:33,117 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 328 transitions. Word has length 72 [2020-12-01 15:16:33,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:33,118 INFO L481 AbstractCegarLoop]: Abstraction has 263 states and 328 transitions. [2020-12-01 15:16:33,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-01 15:16:33,118 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 328 transitions. [2020-12-01 15:16:33,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-01 15:16:33,119 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:33,119 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 6, 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] [2020-12-01 15:16:33,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-01 15:16:33,332 INFO L429 AbstractCegarLoop]: === Iteration 26 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-01 15:16:33,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:33,333 INFO L82 PathProgramCache]: Analyzing trace with hash -2029244633, now seen corresponding path program 1 times [2020-12-01 15:16:33,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:33,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713094199] [2020-12-01 15:16:33,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:33,340 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:33,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [513020832] [2020-12-01 15:16:33,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_739f59ac-ff0c-431b-8fe8-c7fc0840f035/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:33,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:33,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-01 15:16:33,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:33,482 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-12-01 15:16:33,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713094199] [2020-12-01 15:16:33,482 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:33,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513020832] [2020-12-01 15:16:33,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:16:33,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-01 15:16:33,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035418352] [2020-12-01 15:16:33,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:16:33,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:33,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:16:33,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:16:33,484 INFO L87 Difference]: Start difference. First operand 263 states and 328 transitions. Second operand 6 states. [2020-12-01 15:16:33,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:33,533 INFO L93 Difference]: Finished difference Result 263 states and 328 transitions. [2020-12-01 15:16:33,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 15:16:33,534 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-12-01 15:16:33,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:33,537 INFO L225 Difference]: With dead ends: 263 [2020-12-01 15:16:33,537 INFO L226 Difference]: Without dead ends: 262 [2020-12-01 15:16:33,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:16:33,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-12-01 15:16:33,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2020-12-01 15:16:33,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-12-01 15:16:33,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 325 transitions. [2020-12-01 15:16:33,559 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 325 transitions. Word has length 73 [2020-12-01 15:16:33,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:33,559 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 325 transitions. [2020-12-01 15:16:33,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:16:33,560 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 325 transitions. [2020-12-01 15:16:33,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-01 15:16:33,561 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:33,561 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 6, 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] [2020-12-01 15:16:33,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-12-01 15:16:33,785 INFO L429 AbstractCegarLoop]: === Iteration 27 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-01 15:16:33,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:33,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1181156173, now seen corresponding path program 1 times [2020-12-01 15:16:33,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:33,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409789657] [2020-12-01 15:16:33,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:33,793 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:33,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1618364804] [2020-12-01 15:16:33,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_739f59ac-ff0c-431b-8fe8-c7fc0840f035/bin/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:33,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-01 15:16:33,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:33,951 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-12-01 15:16:33,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409789657] [2020-12-01 15:16:33,951 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:33,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618364804] [2020-12-01 15:16:33,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:33,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-01 15:16:33,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941291356] [2020-12-01 15:16:33,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:16:33,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:33,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:16:33,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:16:33,954 INFO L87 Difference]: Start difference. First operand 262 states and 325 transitions. Second operand 5 states. [2020-12-01 15:16:34,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:34,076 INFO L93 Difference]: Finished difference Result 282 states and 343 transitions. [2020-12-01 15:16:34,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:16:34,077 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2020-12-01 15:16:34,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:34,079 INFO L225 Difference]: With dead ends: 282 [2020-12-01 15:16:34,080 INFO L226 Difference]: Without dead ends: 280 [2020-12-01 15:16:34,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:16:34,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-12-01 15:16:34,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 266. [2020-12-01 15:16:34,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-12-01 15:16:34,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 326 transitions. [2020-12-01 15:16:34,100 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 326 transitions. Word has length 77 [2020-12-01 15:16:34,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:34,100 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 326 transitions. [2020-12-01 15:16:34,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:16:34,101 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 326 transitions. [2020-12-01 15:16:34,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-01 15:16:34,102 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:34,102 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 6, 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] [2020-12-01 15:16:34,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-01 15:16:34,328 INFO L429 AbstractCegarLoop]: === Iteration 28 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-01 15:16:34,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:34,329 INFO L82 PathProgramCache]: Analyzing trace with hash 2038864413, now seen corresponding path program 1 times [2020-12-01 15:16:34,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:34,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496950055] [2020-12-01 15:16:34,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:34,335 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:34,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1043780821] [2020-12-01 15:16:34,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_739f59ac-ff0c-431b-8fe8-c7fc0840f035/bin/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:34,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-01 15:16:34,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:34,513 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-12-01 15:16:34,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496950055] [2020-12-01 15:16:34,514 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:34,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043780821] [2020-12-01 15:16:34,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:34,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-01 15:16:34,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893685678] [2020-12-01 15:16:34,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:16:34,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:34,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:16:34,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:16:34,517 INFO L87 Difference]: Start difference. First operand 266 states and 326 transitions. Second operand 5 states. [2020-12-01 15:16:34,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:34,628 INFO L93 Difference]: Finished difference Result 280 states and 338 transitions. [2020-12-01 15:16:34,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:16:34,628 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-12-01 15:16:34,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:34,631 INFO L225 Difference]: With dead ends: 280 [2020-12-01 15:16:34,631 INFO L226 Difference]: Without dead ends: 278 [2020-12-01 15:16:34,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:16:34,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-12-01 15:16:34,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 256. [2020-12-01 15:16:34,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-12-01 15:16:34,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 313 transitions. [2020-12-01 15:16:34,653 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 313 transitions. Word has length 78 [2020-12-01 15:16:34,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:34,654 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 313 transitions. [2020-12-01 15:16:34,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:16:34,654 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 313 transitions. [2020-12-01 15:16:34,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-01 15:16:34,657 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:34,657 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 6, 3, 3, 3, 3, 3, 3, 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] [2020-12-01 15:16:34,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-01 15:16:34,872 INFO L429 AbstractCegarLoop]: === Iteration 29 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-01 15:16:34,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:34,873 INFO L82 PathProgramCache]: Analyzing trace with hash 643431079, now seen corresponding path program 2 times [2020-12-01 15:16:34,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:34,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483676094] [2020-12-01 15:16:34,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:34,878 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:34,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2021753205] [2020-12-01 15:16:34,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_739f59ac-ff0c-431b-8fe8-c7fc0840f035/bin/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:34,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 15:16:34,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:16:34,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-01 15:16:34,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:35,139 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 45 proven. 10 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-12-01 15:16:35,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483676094] [2020-12-01 15:16:35,140 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:35,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021753205] [2020-12-01 15:16:35,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:35,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-01 15:16:35,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597709031] [2020-12-01 15:16:35,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-01 15:16:35,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:35,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-01 15:16:35,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-12-01 15:16:35,144 INFO L87 Difference]: Start difference. First operand 256 states and 313 transitions. Second operand 11 states. [2020-12-01 15:16:35,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:35,621 INFO L93 Difference]: Finished difference Result 469 states and 578 transitions. [2020-12-01 15:16:35,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-01 15:16:35,621 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 82 [2020-12-01 15:16:35,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:35,624 INFO L225 Difference]: With dead ends: 469 [2020-12-01 15:16:35,624 INFO L226 Difference]: Without dead ends: 279 [2020-12-01 15:16:35,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2020-12-01 15:16:35,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-12-01 15:16:35,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 254. [2020-12-01 15:16:35,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-12-01 15:16:35,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 309 transitions. [2020-12-01 15:16:35,645 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 309 transitions. Word has length 82 [2020-12-01 15:16:35,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:35,646 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 309 transitions. [2020-12-01 15:16:35,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-01 15:16:35,646 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 309 transitions. [2020-12-01 15:16:35,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-01 15:16:35,647 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:35,647 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 6, 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] [2020-12-01 15:16:35,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-01 15:16:35,874 INFO L429 AbstractCegarLoop]: === Iteration 30 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-01 15:16:35,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:35,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1219712523, now seen corresponding path program 2 times [2020-12-01 15:16:35,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:35,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650740525] [2020-12-01 15:16:35,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:35,879 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:35,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1574140008] [2020-12-01 15:16:35,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_739f59ac-ff0c-431b-8fe8-c7fc0840f035/bin/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:35,938 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 15:16:35,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:16:35,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-01 15:16:35,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:36,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650740525] [2020-12-01 15:16:36,026 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:36,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574140008] [2020-12-01 15:16:36,026 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: cannot handle proper monomial [2020-12-01 15:16:36,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:16:36,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-01 15:16:36,027 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-01 15:16:36,027 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 15:16:36,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:36,278 WARN L254 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-01 15:16:36,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:16:36 BoogieIcfgContainer [2020-12-01 15:16:36,279 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:16:36,279 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:16:36,279 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:16:36,280 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:16:36,280 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:16:19" (3/4) ... [2020-12-01 15:16:36,283 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-01 15:16:36,283 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:16:36,284 INFO L168 Benchmark]: Toolchain (without parser) took 17940.31 ms. Allocated memory was 90.2 MB in the beginning and 142.6 MB in the end (delta: 52.4 MB). Free memory was 54.4 MB in the beginning and 94.1 MB in the end (delta: -39.6 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:16:36,284 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 90.2 MB. Free memory is still 70.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:16:36,285 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.41 ms. Allocated memory is still 90.2 MB. Free memory was 54.2 MB in the beginning and 68.1 MB in the end (delta: -13.8 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-12-01 15:16:36,285 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.31 ms. Allocated memory is still 90.2 MB. Free memory was 68.0 MB in the beginning and 66.3 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:16:36,285 INFO L168 Benchmark]: Boogie Preprocessor took 43.81 ms. Allocated memory is still 90.2 MB. Free memory was 66.3 MB in the beginning and 65.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:16:36,286 INFO L168 Benchmark]: RCFGBuilder took 530.37 ms. Allocated memory was 90.2 MB in the beginning and 117.4 MB in the end (delta: 27.3 MB). Free memory was 65.0 MB in the beginning and 95.6 MB in the end (delta: -30.6 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:16:36,286 INFO L168 Benchmark]: TraceAbstraction took 17023.22 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 95.2 MB in the beginning and 94.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 26.0 MB. Max. memory is 16.1 GB. [2020-12-01 15:16:36,287 INFO L168 Benchmark]: Witness Printer took 3.57 ms. Allocated memory is still 142.6 MB. Free memory is still 94.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:16:36,289 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 90.2 MB. Free memory is still 70.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 277.41 ms. Allocated memory is still 90.2 MB. Free memory was 54.2 MB in the beginning and 68.1 MB in the end (delta: -13.8 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.31 ms. Allocated memory is still 90.2 MB. Free memory was 68.0 MB in the beginning and 66.3 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.81 ms. Allocated memory is still 90.2 MB. Free memory was 66.3 MB in the beginning and 65.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 530.37 ms. Allocated memory was 90.2 MB in the beginning and 117.4 MB in the end (delta: 27.3 MB). Free memory was 65.0 MB in the beginning and 95.6 MB in the end (delta: -30.6 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 17023.22 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 95.2 MB in the beginning and 94.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 26.0 MB. Max. memory is 16.1 GB. * Witness Printer took 3.57 ms. Allocated memory is still 142.6 MB. Free memory is still 94.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 30]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L34] int x = __VERIFIER_nondet_int(); [L35] COND FALSE !(x < 0) [L37] int y = __VERIFIER_nondet_int(); [L38] COND FALSE !(y < 0) [L40] int z = __VERIFIER_nondet_int(); [L41] int n = 0; [L41] COND TRUE n <= x [L42] int k = 0; [L42] COND TRUE k <= x [L43] COND TRUE k <= n [L30] CALL, EXPR fact(n) [L25] COND TRUE n <= 0 [L25] return 1; [L30] RET, EXPR fact(n) [L30] CALL, EXPR fact(k) [L25] COND TRUE n <= 0 [L25] return 1; [L30] RET, EXPR fact(k) [L30] EXPR n - k [L30] CALL, EXPR fact(n - k) [L25] COND TRUE n <= 0 [L25] return 1; [L30] RET, EXPR fact(n - k) [L30] EXPR fact(k) * fact(n - k) [L30] EXPR fact(n) / (fact(k) * fact(n - k)) [L30] return fact(n) / (fact(k) * fact(n - k)); [L42] k++ [L42] COND TRUE k <= x [L43] COND FALSE !(k <= n) [L30] CALL, EXPR fact(n) [L25] COND FALSE !(n <= 0) [L26] EXPR n - 1 [L26] CALL, EXPR fact(n - 1) [L25] COND TRUE n <= 0 [L25] return 1; [L26] RET, EXPR fact(n - 1) [L26] EXPR n * fact(n - 1) [L26] return n * fact(n - 1); [L30] RET, EXPR fact(n) [L30] CALL, EXPR fact(k) [L25] COND TRUE n <= 0 [L25] return 1; [L30] RET, EXPR fact(k) [L30] EXPR n - k [L30] CALL, EXPR fact(n - k) [L25] COND FALSE !(n <= 0) [L26] EXPR n - 1 [L26] CALL, EXPR fact(n - 1) [L25] COND TRUE n <= 0 [L25] return 1; [L26] RET, EXPR fact(n - 1) [L26] EXPR n * fact(n - 1) [L26] return n * fact(n - 1); [L30] RET, EXPR fact(n - k) [L30] EXPR fact(k) * fact(n - k) [L30] fact(n) / (fact(k) * fact(n - k)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 71 locations, 20 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 16.8s, OverallIterations: 30, TraceHistogramMax: 9, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2154 SDtfs, 2516 SDslu, 7030 SDs, 0 SdLazy, 3207 SolverSat, 426 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1213 GetRequests, 1010 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=270occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 29 MinimizatonAttempts, 1120 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 1214 NumberOfCodeBlocks, 1214 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 1185 ConstructedInterpolants, 0 QuantifiedInterpolants, 160893 SizeOfPredicates, 63 NumberOfNonLiveVariables, 2719 ConjunctsInSsa, 167 ConjunctsInUnsatCore, 29 InterpolantComputations, 19 PerfectInterpolantSequences, 1109/1144 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...