./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6029375071a37af887817933cb6d522f173528f0 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/bin/utaipan/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 05:44:51,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 05:44:51,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 05:44:51,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 05:44:51,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 05:44:51,701 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 05:44:51,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 05:44:51,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 05:44:51,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 05:44:51,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 05:44:51,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 05:44:51,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 05:44:51,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 05:44:51,724 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 05:44:51,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 05:44:51,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 05:44:51,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 05:44:51,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 05:44:51,730 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 05:44:51,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 05:44:51,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 05:44:51,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 05:44:51,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 05:44:51,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 05:44:51,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 05:44:51,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 05:44:51,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 05:44:51,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 05:44:51,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 05:44:51,744 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 05:44:51,745 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 05:44:51,746 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 05:44:51,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 05:44:51,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 05:44:51,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 05:44:51,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 05:44:51,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 05:44:51,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 05:44:51,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 05:44:51,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 05:44:51,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 05:44:51,751 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-12-09 05:44:51,773 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 05:44:51,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 05:44:51,774 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 05:44:51,775 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 05:44:51,775 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 05:44:51,775 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 05:44:51,775 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 05:44:51,775 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 05:44:51,775 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 05:44:51,775 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 05:44:51,775 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 05:44:51,776 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 05:44:51,776 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 05:44:51,776 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 05:44:51,776 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 05:44:51,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 05:44:51,777 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 05:44:51,777 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 05:44:51,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 05:44:51,777 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 05:44:51,777 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 05:44:51,777 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 05:44:51,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 05:44:51,778 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 05:44:51,778 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-09 05:44:51,778 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 05:44:51,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 05:44:51,778 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 05:44:51,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 05:44:51,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 05:44:51,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 05:44:51,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 05:44:51,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 05:44:51,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 05:44:51,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 05:44:51,779 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 05:44:51,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 05:44:51,780 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 05:44:51,780 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 05:44:51,780 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 05:44:51,780 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6029375071a37af887817933cb6d522f173528f0 [2020-12-09 05:44:51,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 05:44:51,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 05:44:51,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 05:44:51,987 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 05:44:51,988 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 05:44:51,989 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/bin/utaipan/../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2020-12-09 05:44:52,038 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/bin/utaipan/data/92a442da7/7f90d44cdf574da9a0d7e58e01b32226/FLAG43d85786b [2020-12-09 05:44:52,414 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 05:44:52,415 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2020-12-09 05:44:52,422 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/bin/utaipan/data/92a442da7/7f90d44cdf574da9a0d7e58e01b32226/FLAG43d85786b [2020-12-09 05:44:52,431 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/bin/utaipan/data/92a442da7/7f90d44cdf574da9a0d7e58e01b32226 [2020-12-09 05:44:52,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 05:44:52,434 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 05:44:52,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 05:44:52,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 05:44:52,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 05:44:52,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:44:52" (1/1) ... [2020-12-09 05:44:52,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22e80f16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:44:52, skipping insertion in model container [2020-12-09 05:44:52,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:44:52" (1/1) ... [2020-12-09 05:44:52,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 05:44:52,468 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 05:44:52,590 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c[423,436] [2020-12-09 05:44:52,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:44:52,627 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 05:44:52,635 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c[423,436] [2020-12-09 05:44:52,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:44:52,666 INFO L208 MainTranslator]: Completed translation [2020-12-09 05:44:52,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:44:52 WrapperNode [2020-12-09 05:44:52,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 05:44:52,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 05:44:52,667 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 05:44:52,667 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 05:44:52,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:44:52" (1/1) ... [2020-12-09 05:44:52,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:44:52" (1/1) ... [2020-12-09 05:44:52,700 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 05:44:52,701 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 05:44:52,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 05:44:52,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 05:44:52,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:44:52" (1/1) ... [2020-12-09 05:44:52,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:44:52" (1/1) ... [2020-12-09 05:44:52,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:44:52" (1/1) ... [2020-12-09 05:44:52,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:44:52" (1/1) ... [2020-12-09 05:44:52,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:44:52" (1/1) ... [2020-12-09 05:44:52,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:44:52" (1/1) ... [2020-12-09 05:44:52,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:44:52" (1/1) ... [2020-12-09 05:44:52,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 05:44:52,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 05:44:52,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 05:44:52,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 05:44:52,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:44:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/bin/utaipan/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 [2020-12-09 05:44:52,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 05:44:52,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 05:44:52,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 05:44:52,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 05:44:53,313 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 05:44:53,313 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2020-12-09 05:44:53,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:44:53 BoogieIcfgContainer [2020-12-09 05:44:53,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 05:44:53,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 05:44:53,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 05:44:53,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 05:44:53,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:44:52" (1/3) ... [2020-12-09 05:44:53,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb12d51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:44:53, skipping insertion in model container [2020-12-09 05:44:53,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:44:52" (2/3) ... [2020-12-09 05:44:53,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb12d51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:44:53, skipping insertion in model container [2020-12-09 05:44:53,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:44:53" (3/3) ... [2020-12-09 05:44:53,321 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2020-12-09 05:44:53,331 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 05:44:53,334 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 34 error locations. [2020-12-09 05:44:53,344 INFO L253 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2020-12-09 05:44:53,366 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 05:44:53,367 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 05:44:53,367 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 05:44:53,367 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 05:44:53,367 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 05:44:53,367 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 05:44:53,367 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 05:44:53,367 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 05:44:53,383 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states. [2020-12-09 05:44:53,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 05:44:53,387 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:44:53,388 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 05:44:53,388 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 05:44:53,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:44:53,392 INFO L82 PathProgramCache]: Analyzing trace with hash -194124918, now seen corresponding path program 1 times [2020-12-09 05:44:53,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:44:53,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275711861] [2020-12-09 05:44:53,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:44:53,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:44:53,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:44:53,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275711861] [2020-12-09 05:44:53,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:44:53,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:44:53,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505471133] [2020-12-09 05:44:53,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 05:44:53,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:44:53,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 05:44:53,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 05:44:53,515 INFO L87 Difference]: Start difference. First operand 118 states. Second operand 2 states. [2020-12-09 05:44:53,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:44:53,534 INFO L93 Difference]: Finished difference Result 217 states and 285 transitions. [2020-12-09 05:44:53,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 05:44:53,535 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-09 05:44:53,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:44:53,543 INFO L225 Difference]: With dead ends: 217 [2020-12-09 05:44:53,543 INFO L226 Difference]: Without dead ends: 112 [2020-12-09 05:44:53,545 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 [2020-12-09 05:44:53,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-12-09 05:44:53,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2020-12-09 05:44:53,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-12-09 05:44:53,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 135 transitions. [2020-12-09 05:44:53,574 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 135 transitions. Word has length 6 [2020-12-09 05:44:53,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:44:53,574 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 135 transitions. [2020-12-09 05:44:53,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 05:44:53,574 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 135 transitions. [2020-12-09 05:44:53,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 05:44:53,575 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:44:53,575 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 05:44:53,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 05:44:53,575 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 05:44:53,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:44:53,576 INFO L82 PathProgramCache]: Analyzing trace with hash -195406378, now seen corresponding path program 1 times [2020-12-09 05:44:53,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:44:53,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933062126] [2020-12-09 05:44:53,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:44:53,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:44:53,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:44:53,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933062126] [2020-12-09 05:44:53,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:44:53,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 05:44:53,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971717373] [2020-12-09 05:44:53,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:44:53,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:44:53,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:44:53,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:44:53,620 INFO L87 Difference]: Start difference. First operand 112 states and 135 transitions. Second operand 3 states. [2020-12-09 05:44:53,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:44:53,748 INFO L93 Difference]: Finished difference Result 234 states and 286 transitions. [2020-12-09 05:44:53,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:44:53,755 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-09 05:44:53,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:44:53,757 INFO L225 Difference]: With dead ends: 234 [2020-12-09 05:44:53,757 INFO L226 Difference]: Without dead ends: 138 [2020-12-09 05:44:53,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:44:53,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-12-09 05:44:53,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2020-12-09 05:44:53,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-12-09 05:44:53,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 161 transitions. [2020-12-09 05:44:53,768 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 161 transitions. Word has length 6 [2020-12-09 05:44:53,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:44:53,769 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 161 transitions. [2020-12-09 05:44:53,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:44:53,769 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 161 transitions. [2020-12-09 05:44:53,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 05:44:53,769 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:44:53,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:44:53,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 05:44:53,770 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 05:44:53,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:44:53,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1768995618, now seen corresponding path program 1 times [2020-12-09 05:44:53,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:44:53,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928878504] [2020-12-09 05:44:53,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:44:53,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:44:53,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:44:53,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928878504] [2020-12-09 05:44:53,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:44:53,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:44:53,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743766058] [2020-12-09 05:44:53,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:44:53,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:44:53,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:44:53,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:44:53,805 INFO L87 Difference]: Start difference. First operand 136 states and 161 transitions. Second operand 4 states. [2020-12-09 05:44:53,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:44:53,904 INFO L93 Difference]: Finished difference Result 178 states and 207 transitions. [2020-12-09 05:44:53,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:44:53,904 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 05:44:53,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:44:53,906 INFO L225 Difference]: With dead ends: 178 [2020-12-09 05:44:53,906 INFO L226 Difference]: Without dead ends: 168 [2020-12-09 05:44:53,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:44:53,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-12-09 05:44:53,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 137. [2020-12-09 05:44:53,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-12-09 05:44:53,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 163 transitions. [2020-12-09 05:44:53,916 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 163 transitions. Word has length 10 [2020-12-09 05:44:53,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:44:53,916 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 163 transitions. [2020-12-09 05:44:53,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:44:53,916 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 163 transitions. [2020-12-09 05:44:53,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 05:44:53,917 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:44:53,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:44:53,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 05:44:53,917 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 05:44:53,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:44:53,918 INFO L82 PathProgramCache]: Analyzing trace with hash 995710899, now seen corresponding path program 1 times [2020-12-09 05:44:53,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:44:53,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712446099] [2020-12-09 05:44:53,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:44:53,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:44:53,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:44:53,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712446099] [2020-12-09 05:44:53,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:44:53,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:44:53,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219309374] [2020-12-09 05:44:53,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:44:53,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:44:53,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:44:53,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:44:53,952 INFO L87 Difference]: Start difference. First operand 137 states and 163 transitions. Second operand 3 states. [2020-12-09 05:44:54,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:44:54,014 INFO L93 Difference]: Finished difference Result 168 states and 193 transitions. [2020-12-09 05:44:54,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:44:54,014 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-12-09 05:44:54,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:44:54,015 INFO L225 Difference]: With dead ends: 168 [2020-12-09 05:44:54,016 INFO L226 Difference]: Without dead ends: 160 [2020-12-09 05:44:54,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:44:54,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-12-09 05:44:54,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 123. [2020-12-09 05:44:54,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-12-09 05:44:54,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 149 transitions. [2020-12-09 05:44:54,027 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 149 transitions. Word has length 11 [2020-12-09 05:44:54,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:44:54,028 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 149 transitions. [2020-12-09 05:44:54,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:44:54,028 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 149 transitions. [2020-12-09 05:44:54,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 05:44:54,029 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:44:54,029 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:44:54,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 05:44:54,030 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 05:44:54,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:44:54,030 INFO L82 PathProgramCache]: Analyzing trace with hash 811459242, now seen corresponding path program 1 times [2020-12-09 05:44:54,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:44:54,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327301604] [2020-12-09 05:44:54,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:44:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:44:54,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:44:54,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327301604] [2020-12-09 05:44:54,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:44:54,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:44:54,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878793607] [2020-12-09 05:44:54,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:44:54,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:44:54,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:44:54,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:44:54,066 INFO L87 Difference]: Start difference. First operand 123 states and 149 transitions. Second operand 4 states. [2020-12-09 05:44:54,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:44:54,161 INFO L93 Difference]: Finished difference Result 274 states and 323 transitions. [2020-12-09 05:44:54,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:44:54,162 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 05:44:54,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:44:54,163 INFO L225 Difference]: With dead ends: 274 [2020-12-09 05:44:54,163 INFO L226 Difference]: Without dead ends: 178 [2020-12-09 05:44:54,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:44:54,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-12-09 05:44:54,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 133. [2020-12-09 05:44:54,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-12-09 05:44:54,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 161 transitions. [2020-12-09 05:44:54,174 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 161 transitions. Word has length 11 [2020-12-09 05:44:54,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:44:54,175 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 161 transitions. [2020-12-09 05:44:54,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:44:54,175 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 161 transitions. [2020-12-09 05:44:54,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 05:44:54,176 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:44:54,176 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:44:54,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 05:44:54,177 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 05:44:54,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:44:54,177 INFO L82 PathProgramCache]: Analyzing trace with hash 2097074410, now seen corresponding path program 1 times [2020-12-09 05:44:54,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:44:54,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076925017] [2020-12-09 05:44:54,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:44:54,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:44:54,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:44:54,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076925017] [2020-12-09 05:44:54,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:44:54,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:44:54,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810263277] [2020-12-09 05:44:54,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:44:54,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:44:54,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:44:54,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:44:54,224 INFO L87 Difference]: Start difference. First operand 133 states and 161 transitions. Second operand 3 states. [2020-12-09 05:44:54,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:44:54,265 INFO L93 Difference]: Finished difference Result 203 states and 243 transitions. [2020-12-09 05:44:54,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:44:54,266 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-12-09 05:44:54,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:44:54,266 INFO L225 Difference]: With dead ends: 203 [2020-12-09 05:44:54,267 INFO L226 Difference]: Without dead ends: 122 [2020-12-09 05:44:54,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:44:54,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-12-09 05:44:54,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-12-09 05:44:54,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-12-09 05:44:54,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 145 transitions. [2020-12-09 05:44:54,272 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 145 transitions. Word has length 12 [2020-12-09 05:44:54,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:44:54,272 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 145 transitions. [2020-12-09 05:44:54,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:44:54,272 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 145 transitions. [2020-12-09 05:44:54,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 05:44:54,273 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:44:54,273 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:44:54,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 05:44:54,273 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 05:44:54,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:44:54,274 INFO L82 PathProgramCache]: Analyzing trace with hash 2061748102, now seen corresponding path program 1 times [2020-12-09 05:44:54,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:44:54,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900656461] [2020-12-09 05:44:54,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:44:54,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:44:54,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:44:54,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900656461] [2020-12-09 05:44:54,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757443035] [2020-12-09 05:44:54,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/bin/utaipan/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 [2020-12-09 05:44:54,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:44:54,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 05:44:54,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:44:54,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:44:54,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:44:54,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:44:54,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 05:44:54,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [2] total 7 [2020-12-09 05:44:54,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903298115] [2020-12-09 05:44:54,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 05:44:54,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:44:54,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 05:44:54,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-09 05:44:54,403 INFO L87 Difference]: Start difference. First operand 122 states and 145 transitions. Second operand 6 states. [2020-12-09 05:44:54,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:44:54,485 INFO L93 Difference]: Finished difference Result 208 states and 233 transitions. [2020-12-09 05:44:54,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 05:44:54,486 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-09 05:44:54,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:44:54,487 INFO L225 Difference]: With dead ends: 208 [2020-12-09 05:44:54,487 INFO L226 Difference]: Without dead ends: 205 [2020-12-09 05:44:54,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-09 05:44:54,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-12-09 05:44:54,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 118. [2020-12-09 05:44:54,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-12-09 05:44:54,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 141 transitions. [2020-12-09 05:44:54,493 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 141 transitions. Word has length 12 [2020-12-09 05:44:54,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:44:54,493 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 141 transitions. [2020-12-09 05:44:54,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 05:44:54,493 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 141 transitions. [2020-12-09 05:44:54,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 05:44:54,494 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:44:54,494 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:44:54,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-09 05:44:54,697 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 05:44:54,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:44:54,698 INFO L82 PathProgramCache]: Analyzing trace with hash 202638982, now seen corresponding path program 1 times [2020-12-09 05:44:54,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:44:54,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650185784] [2020-12-09 05:44:54,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:44:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:44:54,790 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 05:44:54,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650185784] [2020-12-09 05:44:54,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:44:54,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:44:54,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889252256] [2020-12-09 05:44:54,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:44:54,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:44:54,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:44:54,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:44:54,797 INFO L87 Difference]: Start difference. First operand 118 states and 141 transitions. Second operand 4 states. [2020-12-09 05:44:54,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:44:54,927 INFO L93 Difference]: Finished difference Result 184 states and 208 transitions. [2020-12-09 05:44:54,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:44:54,927 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-09 05:44:54,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:44:54,928 INFO L225 Difference]: With dead ends: 184 [2020-12-09 05:44:54,929 INFO L226 Difference]: Without dead ends: 180 [2020-12-09 05:44:54,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:44:54,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-12-09 05:44:54,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 116. [2020-12-09 05:44:54,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-12-09 05:44:54,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 140 transitions. [2020-12-09 05:44:54,937 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 140 transitions. Word has length 16 [2020-12-09 05:44:54,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:44:54,937 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 140 transitions. [2020-12-09 05:44:54,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:44:54,938 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 140 transitions. [2020-12-09 05:44:54,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 05:44:54,939 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:44:54,939 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:44:54,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 05:44:54,939 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 05:44:54,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:44:54,940 INFO L82 PathProgramCache]: Analyzing trace with hash -761781350, now seen corresponding path program 1 times [2020-12-09 05:44:54,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:44:54,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134416324] [2020-12-09 05:44:54,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:44:54,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:44:54,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:44:54,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134416324] [2020-12-09 05:44:54,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:44:54,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:44:54,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563922107] [2020-12-09 05:44:54,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:44:54,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:44:54,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:44:54,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:44:54,998 INFO L87 Difference]: Start difference. First operand 116 states and 140 transitions. Second operand 4 states. [2020-12-09 05:44:55,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:44:55,067 INFO L93 Difference]: Finished difference Result 212 states and 252 transitions. [2020-12-09 05:44:55,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:44:55,068 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-12-09 05:44:55,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:44:55,069 INFO L225 Difference]: With dead ends: 212 [2020-12-09 05:44:55,069 INFO L226 Difference]: Without dead ends: 111 [2020-12-09 05:44:55,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:44:55,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-12-09 05:44:55,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 108. [2020-12-09 05:44:55,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-09 05:44:55,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 127 transitions. [2020-12-09 05:44:55,075 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 127 transitions. Word has length 21 [2020-12-09 05:44:55,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:44:55,076 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 127 transitions. [2020-12-09 05:44:55,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:44:55,076 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 127 transitions. [2020-12-09 05:44:55,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-09 05:44:55,077 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:44:55,077 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:44:55,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 05:44:55,078 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 05:44:55,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:44:55,078 INFO L82 PathProgramCache]: Analyzing trace with hash -93156751, now seen corresponding path program 1 times [2020-12-09 05:44:55,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:44:55,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130338774] [2020-12-09 05:44:55,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:44:55,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:44:55,120 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:44:55,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130338774] [2020-12-09 05:44:55,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054948472] [2020-12-09 05:44:55,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/bin/utaipan/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 [2020-12-09 05:44:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:44:55,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 05:44:55,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:44:55,196 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:44:55,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:44:55,238 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:44:55,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1026003144] [2020-12-09 05:44:55,253 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2020-12-09 05:44:55,253 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 05:44:55,257 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 05:44:55,261 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 05:44:55,261 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 05:44:55,653 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 05:44:55,788 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-12-09 05:44:55,916 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-09 05:44:56,056 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-12-09 05:44:56,778 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 71 [2020-12-09 05:44:56,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 05:44:56,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [5, 5, 5] total 21 [2020-12-09 05:44:56,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676575546] [2020-12-09 05:44:56,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-09 05:44:56,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:44:56,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-09 05:44:56,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2020-12-09 05:44:56,780 INFO L87 Difference]: Start difference. First operand 108 states and 127 transitions. Second operand 14 states. [2020-12-09 05:44:57,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:44:57,405 INFO L93 Difference]: Finished difference Result 251 states and 297 transitions. [2020-12-09 05:44:57,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-09 05:44:57,406 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 25 [2020-12-09 05:44:57,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:44:57,407 INFO L225 Difference]: With dead ends: 251 [2020-12-09 05:44:57,407 INFO L226 Difference]: Without dead ends: 143 [2020-12-09 05:44:57,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 56 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2020-12-09 05:44:57,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-12-09 05:44:57,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 111. [2020-12-09 05:44:57,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-12-09 05:44:57,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 134 transitions. [2020-12-09 05:44:57,417 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 134 transitions. Word has length 25 [2020-12-09 05:44:57,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:44:57,417 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 134 transitions. [2020-12-09 05:44:57,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-09 05:44:57,417 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 134 transitions. [2020-12-09 05:44:57,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-09 05:44:57,418 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:44:57,418 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:44:57,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-09 05:44:57,619 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 05:44:57,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:44:57,619 INFO L82 PathProgramCache]: Analyzing trace with hash -500448557, now seen corresponding path program 1 times [2020-12-09 05:44:57,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:44:57,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465776502] [2020-12-09 05:44:57,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:44:57,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:44:57,650 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-09 05:44:57,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465776502] [2020-12-09 05:44:57,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:44:57,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:44:57,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653227140] [2020-12-09 05:44:57,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:44:57,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:44:57,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:44:57,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:44:57,652 INFO L87 Difference]: Start difference. First operand 111 states and 134 transitions. Second operand 4 states. [2020-12-09 05:44:57,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:44:57,704 INFO L93 Difference]: Finished difference Result 138 states and 161 transitions. [2020-12-09 05:44:57,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:44:57,705 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-12-09 05:44:57,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:44:57,706 INFO L225 Difference]: With dead ends: 138 [2020-12-09 05:44:57,706 INFO L226 Difference]: Without dead ends: 136 [2020-12-09 05:44:57,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:44:57,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-12-09 05:44:57,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 100. [2020-12-09 05:44:57,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-09 05:44:57,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 120 transitions. [2020-12-09 05:44:57,715 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 120 transitions. Word has length 25 [2020-12-09 05:44:57,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:44:57,715 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 120 transitions. [2020-12-09 05:44:57,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:44:57,715 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 120 transitions. [2020-12-09 05:44:57,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-09 05:44:57,716 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:44:57,716 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:44:57,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-09 05:44:57,716 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 05:44:57,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:44:57,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1302046830, now seen corresponding path program 1 times [2020-12-09 05:44:57,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:44:57,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154717069] [2020-12-09 05:44:57,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:44:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:44:57,750 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:44:57,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154717069] [2020-12-09 05:44:57,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834574060] [2020-12-09 05:44:57,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/bin/utaipan/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 [2020-12-09 05:44:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:44:57,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 05:44:57,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:44:57,821 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:44:57,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:44:57,858 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:44:57,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [924765309] [2020-12-09 05:44:57,860 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2020-12-09 05:44:57,860 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 05:44:57,861 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 05:44:57,861 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 05:44:57,861 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 05:44:58,068 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 05:44:58,180 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-12-09 05:44:59,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 05:44:59,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [5, 5, 5] total 23 [2020-12-09 05:44:59,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489675103] [2020-12-09 05:44:59,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-09 05:44:59,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:44:59,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-09 05:44:59,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2020-12-09 05:44:59,137 INFO L87 Difference]: Start difference. First operand 100 states and 120 transitions. Second operand 16 states. [2020-12-09 05:44:59,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:44:59,706 INFO L93 Difference]: Finished difference Result 190 states and 211 transitions. [2020-12-09 05:44:59,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-09 05:44:59,706 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 26 [2020-12-09 05:44:59,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:44:59,707 INFO L225 Difference]: With dead ends: 190 [2020-12-09 05:44:59,708 INFO L226 Difference]: Without dead ends: 188 [2020-12-09 05:44:59,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 56 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2020-12-09 05:44:59,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-12-09 05:44:59,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 102. [2020-12-09 05:44:59,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-12-09 05:44:59,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 122 transitions. [2020-12-09 05:44:59,714 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 122 transitions. Word has length 26 [2020-12-09 05:44:59,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:44:59,714 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 122 transitions. [2020-12-09 05:44:59,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-09 05:44:59,714 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 122 transitions. [2020-12-09 05:44:59,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-09 05:44:59,714 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:44:59,714 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:44:59,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-09 05:44:59,915 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 05:44:59,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:44:59,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1087079911, now seen corresponding path program 1 times [2020-12-09 05:44:59,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:44:59,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106562957] [2020-12-09 05:44:59,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:44:59,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:44:59,956 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:44:59,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106562957] [2020-12-09 05:44:59,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657194289] [2020-12-09 05:44:59,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/bin/utaipan/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 [2020-12-09 05:44:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:45:00,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-09 05:45:00,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:45:00,031 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-09 05:45:00,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:45:00,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-09 05:45:00,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 05:45:00,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [5] total 10 [2020-12-09 05:45:00,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296203031] [2020-12-09 05:45:00,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 05:45:00,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:45:00,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 05:45:00,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-12-09 05:45:00,111 INFO L87 Difference]: Start difference. First operand 102 states and 122 transitions. Second operand 7 states. [2020-12-09 05:45:00,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:45:00,208 INFO L93 Difference]: Finished difference Result 127 states and 146 transitions. [2020-12-09 05:45:00,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 05:45:00,209 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-12-09 05:45:00,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:45:00,209 INFO L225 Difference]: With dead ends: 127 [2020-12-09 05:45:00,210 INFO L226 Difference]: Without dead ends: 103 [2020-12-09 05:45:00,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-12-09 05:45:00,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-12-09 05:45:00,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2020-12-09 05:45:00,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-12-09 05:45:00,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 119 transitions. [2020-12-09 05:45:00,219 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 119 transitions. Word has length 26 [2020-12-09 05:45:00,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:45:00,219 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 119 transitions. [2020-12-09 05:45:00,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 05:45:00,219 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 119 transitions. [2020-12-09 05:45:00,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-09 05:45:00,220 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:45:00,220 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:45:00,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:45:00,422 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 05:45:00,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:45:00,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1082767298, now seen corresponding path program 1 times [2020-12-09 05:45:00,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:45:00,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867982564] [2020-12-09 05:45:00,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:45:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:45:00,505 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-09 05:45:00,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867982564] [2020-12-09 05:45:00,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:45:00,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:45:00,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69229743] [2020-12-09 05:45:00,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:45:00,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:45:00,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:45:00,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:45:00,512 INFO L87 Difference]: Start difference. First operand 102 states and 119 transitions. Second operand 4 states. [2020-12-09 05:45:00,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:45:00,604 INFO L93 Difference]: Finished difference Result 129 states and 147 transitions. [2020-12-09 05:45:00,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:45:00,605 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-12-09 05:45:00,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:45:00,605 INFO L225 Difference]: With dead ends: 129 [2020-12-09 05:45:00,606 INFO L226 Difference]: Without dead ends: 127 [2020-12-09 05:45:00,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:45:00,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-09 05:45:00,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 91. [2020-12-09 05:45:00,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-12-09 05:45:00,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 106 transitions. [2020-12-09 05:45:00,612 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 106 transitions. Word has length 26 [2020-12-09 05:45:00,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:45:00,612 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 106 transitions. [2020-12-09 05:45:00,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:45:00,612 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 106 transitions. [2020-12-09 05:45:00,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-09 05:45:00,612 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:45:00,612 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:45:00,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-12-09 05:45:00,613 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 05:45:00,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:45:00,613 INFO L82 PathProgramCache]: Analyzing trace with hash 2044744906, now seen corresponding path program 1 times [2020-12-09 05:45:00,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:45:00,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34488404] [2020-12-09 05:45:00,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:45:00,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:45:00,633 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-09 05:45:00,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34488404] [2020-12-09 05:45:00,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:45:00,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:45:00,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013333355] [2020-12-09 05:45:00,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:45:00,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:45:00,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:45:00,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:45:00,634 INFO L87 Difference]: Start difference. First operand 91 states and 106 transitions. Second operand 4 states. [2020-12-09 05:45:00,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:45:00,682 INFO L93 Difference]: Finished difference Result 121 states and 135 transitions. [2020-12-09 05:45:00,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:45:00,683 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-12-09 05:45:00,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:45:00,684 INFO L225 Difference]: With dead ends: 121 [2020-12-09 05:45:00,684 INFO L226 Difference]: Without dead ends: 119 [2020-12-09 05:45:00,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:45:00,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-12-09 05:45:00,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 76. [2020-12-09 05:45:00,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-09 05:45:00,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2020-12-09 05:45:00,691 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 28 [2020-12-09 05:45:00,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:45:00,691 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2020-12-09 05:45:00,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:45:00,691 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2020-12-09 05:45:00,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-09 05:45:00,692 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:45:00,692 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:45:00,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-12-09 05:45:00,692 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 05:45:00,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:45:00,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1365583522, now seen corresponding path program 1 times [2020-12-09 05:45:00,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:45:00,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190405525] [2020-12-09 05:45:00,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:45:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:45:00,724 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:00,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190405525] [2020-12-09 05:45:00,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374670277] [2020-12-09 05:45:00,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/bin/utaipan/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 [2020-12-09 05:45:00,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:45:00,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 05:45:00,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:45:00,799 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:00,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:45:00,835 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:00,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [817210477] [2020-12-09 05:45:00,837 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2020-12-09 05:45:00,837 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 05:45:00,837 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 05:45:00,837 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 05:45:00,837 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 05:45:01,023 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 05:45:01,237 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-09 05:45:01,355 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-12-09 05:45:02,314 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 75 [2020-12-09 05:45:02,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 05:45:02,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [5, 5, 5] total 24 [2020-12-09 05:45:02,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209055504] [2020-12-09 05:45:02,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-09 05:45:02,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:45:02,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-09 05:45:02,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2020-12-09 05:45:02,316 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand 17 states. [2020-12-09 05:45:02,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:45:02,745 INFO L93 Difference]: Finished difference Result 127 states and 145 transitions. [2020-12-09 05:45:02,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-09 05:45:02,746 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 29 [2020-12-09 05:45:02,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:45:02,746 INFO L225 Difference]: With dead ends: 127 [2020-12-09 05:45:02,747 INFO L226 Difference]: Without dead ends: 103 [2020-12-09 05:45:02,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2020-12-09 05:45:02,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-12-09 05:45:02,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 84. [2020-12-09 05:45:02,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-09 05:45:02,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 98 transitions. [2020-12-09 05:45:02,752 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 98 transitions. Word has length 29 [2020-12-09 05:45:02,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:45:02,752 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 98 transitions. [2020-12-09 05:45:02,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-09 05:45:02,752 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 98 transitions. [2020-12-09 05:45:02,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-09 05:45:02,753 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:45:02,753 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:45:02,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-12-09 05:45:02,954 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 05:45:02,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:45:02,956 INFO L82 PathProgramCache]: Analyzing trace with hash -2092468456, now seen corresponding path program 1 times [2020-12-09 05:45:02,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:45:02,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057889084] [2020-12-09 05:45:02,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:45:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:45:02,998 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:02,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057889084] [2020-12-09 05:45:02,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538578158] [2020-12-09 05:45:02,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/bin/utaipan/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 [2020-12-09 05:45:03,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:45:03,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-09 05:45:03,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:45:03,079 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-09 05:45:03,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:45:03,160 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-09 05:45:03,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 05:45:03,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [5] total 11 [2020-12-09 05:45:03,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400876576] [2020-12-09 05:45:03,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 05:45:03,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:45:03,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 05:45:03,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-12-09 05:45:03,162 INFO L87 Difference]: Start difference. First operand 84 states and 98 transitions. Second operand 8 states. [2020-12-09 05:45:03,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:45:03,253 INFO L93 Difference]: Finished difference Result 124 states and 141 transitions. [2020-12-09 05:45:03,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 05:45:03,254 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-12-09 05:45:03,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:45:03,254 INFO L225 Difference]: With dead ends: 124 [2020-12-09 05:45:03,255 INFO L226 Difference]: Without dead ends: 78 [2020-12-09 05:45:03,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-12-09 05:45:03,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-09 05:45:03,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-12-09 05:45:03,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-09 05:45:03,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2020-12-09 05:45:03,261 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 30 [2020-12-09 05:45:03,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:45:03,261 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2020-12-09 05:45:03,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 05:45:03,261 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2020-12-09 05:45:03,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-09 05:45:03,261 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:45:03,261 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 05:45:03,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:45:03,463 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 05:45:03,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:45:03,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1291339053, now seen corresponding path program 1 times [2020-12-09 05:45:03,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:45:03,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739790288] [2020-12-09 05:45:03,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:45:03,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:45:03,586 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:03,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739790288] [2020-12-09 05:45:03,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994154616] [2020-12-09 05:45:03,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/bin/utaipan/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 [2020-12-09 05:45:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:45:03,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 05:45:03,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:45:03,687 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:03,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:45:03,743 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:03,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1268318298] [2020-12-09 05:45:03,746 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2020-12-09 05:45:03,746 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 05:45:03,746 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 05:45:03,746 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 05:45:03,747 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 05:45:03,949 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 05:45:04,173 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-09 05:45:04,293 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-12-09 05:45:05,608 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 71 [2020-12-09 05:45:05,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 05:45:05,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [5, 5, 5] total 27 [2020-12-09 05:45:05,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389350118] [2020-12-09 05:45:05,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-09 05:45:05,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:45:05,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-09 05:45:05,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2020-12-09 05:45:05,712 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand 20 states. [2020-12-09 05:45:06,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:45:06,247 INFO L93 Difference]: Finished difference Result 126 states and 140 transitions. [2020-12-09 05:45:06,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-09 05:45:06,248 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 33 [2020-12-09 05:45:06,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:45:06,249 INFO L225 Difference]: With dead ends: 126 [2020-12-09 05:45:06,249 INFO L226 Difference]: Without dead ends: 124 [2020-12-09 05:45:06,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 71 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=154, Invalid=658, Unknown=0, NotChecked=0, Total=812 [2020-12-09 05:45:06,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-12-09 05:45:06,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 94. [2020-12-09 05:45:06,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-12-09 05:45:06,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 109 transitions. [2020-12-09 05:45:06,255 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 109 transitions. Word has length 33 [2020-12-09 05:45:06,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:45:06,256 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 109 transitions. [2020-12-09 05:45:06,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-09 05:45:06,256 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 109 transitions. [2020-12-09 05:45:06,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-09 05:45:06,256 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:45:06,256 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:45:06,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:45:06,458 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 05:45:06,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:45:06,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1849630647, now seen corresponding path program 1 times [2020-12-09 05:45:06,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:45:06,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031197765] [2020-12-09 05:45:06,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:45:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:45:06,507 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:06,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031197765] [2020-12-09 05:45:06,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941626158] [2020-12-09 05:45:06,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/bin/utaipan/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 [2020-12-09 05:45:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:45:06,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 05:45:06,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:45:06,593 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:06,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:45:06,642 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:06,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [6626645] [2020-12-09 05:45:06,644 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2020-12-09 05:45:06,644 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 05:45:06,644 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 05:45:06,645 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 05:45:06,645 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 05:45:06,850 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 05:45:06,995 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-12-09 05:45:07,157 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-09 05:45:07,293 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-12-09 05:45:08,745 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 69 [2020-12-09 05:45:08,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 05:45:08,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [5, 5, 5] total 29 [2020-12-09 05:45:08,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066034365] [2020-12-09 05:45:08,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-09 05:45:08,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:45:08,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-09 05:45:08,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2020-12-09 05:45:08,879 INFO L87 Difference]: Start difference. First operand 94 states and 109 transitions. Second operand 22 states. [2020-12-09 05:45:09,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:45:09,269 INFO L93 Difference]: Finished difference Result 141 states and 160 transitions. [2020-12-09 05:45:09,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-09 05:45:09,270 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 34 [2020-12-09 05:45:09,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:45:09,270 INFO L225 Difference]: With dead ends: 141 [2020-12-09 05:45:09,270 INFO L226 Difference]: Without dead ends: 139 [2020-12-09 05:45:09,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 70 SyntacticMatches, 8 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2020-12-09 05:45:09,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-12-09 05:45:09,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 91. [2020-12-09 05:45:09,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-12-09 05:45:09,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 105 transitions. [2020-12-09 05:45:09,276 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 105 transitions. Word has length 34 [2020-12-09 05:45:09,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:45:09,277 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 105 transitions. [2020-12-09 05:45:09,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-09 05:45:09,277 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 105 transitions. [2020-12-09 05:45:09,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-09 05:45:09,277 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:45:09,277 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 05:45:09,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2020-12-09 05:45:09,479 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 05:45:09,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:45:09,480 INFO L82 PathProgramCache]: Analyzing trace with hash -78024547, now seen corresponding path program 1 times [2020-12-09 05:45:09,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:45:09,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048744350] [2020-12-09 05:45:09,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:45:09,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:45:09,505 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:09,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048744350] [2020-12-09 05:45:09,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204762550] [2020-12-09 05:45:09,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/bin/utaipan/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 [2020-12-09 05:45:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:45:09,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 05:45:09,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:45:09,561 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:09,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:45:09,595 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:09,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [873914010] [2020-12-09 05:45:09,598 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2020-12-09 05:45:09,598 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 05:45:09,598 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 05:45:09,598 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 05:45:09,598 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 05:45:09,778 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 05:45:09,898 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-12-09 05:45:10,019 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-09 05:45:10,151 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-12-09 05:45:11,665 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 82 [2020-12-09 05:45:11,861 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 77 [2020-12-09 05:45:11,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 05:45:11,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [5, 5, 5] total 29 [2020-12-09 05:45:11,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545413736] [2020-12-09 05:45:11,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-09 05:45:11,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:45:11,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-09 05:45:11,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=679, Unknown=0, NotChecked=0, Total=812 [2020-12-09 05:45:11,931 INFO L87 Difference]: Start difference. First operand 91 states and 105 transitions. Second operand 22 states. [2020-12-09 05:45:12,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:45:12,504 INFO L93 Difference]: Finished difference Result 165 states and 183 transitions. [2020-12-09 05:45:12,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-09 05:45:12,504 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 35 [2020-12-09 05:45:12,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:45:12,505 INFO L225 Difference]: With dead ends: 165 [2020-12-09 05:45:12,505 INFO L226 Difference]: Without dead ends: 164 [2020-12-09 05:45:12,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 75 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=144, Invalid=786, Unknown=0, NotChecked=0, Total=930 [2020-12-09 05:45:12,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-12-09 05:45:12,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 109. [2020-12-09 05:45:12,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-12-09 05:45:12,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 128 transitions. [2020-12-09 05:45:12,513 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 128 transitions. Word has length 35 [2020-12-09 05:45:12,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:45:12,513 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 128 transitions. [2020-12-09 05:45:12,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-09 05:45:12,513 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 128 transitions. [2020-12-09 05:45:12,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-09 05:45:12,513 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:45:12,513 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 05:45:12,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:45:12,714 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 05:45:12,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:45:12,714 INFO L82 PathProgramCache]: Analyzing trace with hash 2007823805, now seen corresponding path program 1 times [2020-12-09 05:45:12,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:45:12,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561242995] [2020-12-09 05:45:12,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:45:12,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:45:12,739 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:12,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561242995] [2020-12-09 05:45:12,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958038283] [2020-12-09 05:45:12,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/bin/utaipan/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 [2020-12-09 05:45:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:45:12,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 05:45:12,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:45:12,799 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:12,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:45:12,835 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:12,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1477360929] [2020-12-09 05:45:12,837 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2020-12-09 05:45:12,837 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 05:45:12,837 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 05:45:12,837 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 05:45:12,837 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 05:45:13,001 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 05:45:13,125 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-12-09 05:45:13,244 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-09 05:45:13,372 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-12-09 05:45:15,030 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 84 [2020-12-09 05:45:15,329 WARN L197 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 87 [2020-12-09 05:45:15,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 05:45:15,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [5, 5, 5] total 29 [2020-12-09 05:45:15,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613911171] [2020-12-09 05:45:15,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-09 05:45:15,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:45:15,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-09 05:45:15,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=661, Unknown=0, NotChecked=0, Total=812 [2020-12-09 05:45:15,407 INFO L87 Difference]: Start difference. First operand 109 states and 128 transitions. Second operand 22 states. [2020-12-09 05:45:16,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:45:16,100 INFO L93 Difference]: Finished difference Result 155 states and 176 transitions. [2020-12-09 05:45:16,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-09 05:45:16,101 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 35 [2020-12-09 05:45:16,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:45:16,102 INFO L225 Difference]: With dead ends: 155 [2020-12-09 05:45:16,102 INFO L226 Difference]: Without dead ends: 154 [2020-12-09 05:45:16,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 75 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2020-12-09 05:45:16,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-12-09 05:45:16,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 118. [2020-12-09 05:45:16,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-12-09 05:45:16,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 140 transitions. [2020-12-09 05:45:16,110 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 140 transitions. Word has length 35 [2020-12-09 05:45:16,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:45:16,110 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 140 transitions. [2020-12-09 05:45:16,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-09 05:45:16,111 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 140 transitions. [2020-12-09 05:45:16,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-09 05:45:16,111 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:45:16,111 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 05:45:16,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:45:16,311 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 05:45:16,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:45:16,312 INFO L82 PathProgramCache]: Analyzing trace with hash -259297126, now seen corresponding path program 1 times [2020-12-09 05:45:16,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:45:16,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710523258] [2020-12-09 05:45:16,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:45:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:45:16,345 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:16,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710523258] [2020-12-09 05:45:16,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895353850] [2020-12-09 05:45:16,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/bin/utaipan/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 [2020-12-09 05:45:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:45:16,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 05:45:16,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:45:16,417 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:16,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:45:16,452 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:16,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1704878779] [2020-12-09 05:45:16,454 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2020-12-09 05:45:16,454 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 05:45:16,454 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 05:45:16,454 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 05:45:16,454 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 05:45:16,632 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 05:45:16,748 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-12-09 05:45:16,868 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-09 05:45:16,992 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-12-09 05:45:18,386 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 71 [2020-12-09 05:45:18,806 WARN L197 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 83 [2020-12-09 05:45:19,192 WARN L197 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 91 [2020-12-09 05:45:19,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 05:45:19,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [5, 5, 5] total 29 [2020-12-09 05:45:19,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979571940] [2020-12-09 05:45:19,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-09 05:45:19,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:45:19,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-09 05:45:19,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=640, Unknown=0, NotChecked=0, Total=812 [2020-12-09 05:45:19,194 INFO L87 Difference]: Start difference. First operand 118 states and 140 transitions. Second operand 22 states. [2020-12-09 05:45:19,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:45:19,794 INFO L93 Difference]: Finished difference Result 153 states and 175 transitions. [2020-12-09 05:45:19,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-09 05:45:19,794 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 36 [2020-12-09 05:45:19,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:45:19,795 INFO L225 Difference]: With dead ends: 153 [2020-12-09 05:45:19,795 INFO L226 Difference]: Without dead ends: 151 [2020-12-09 05:45:19,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 77 SyntacticMatches, 7 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2020-12-09 05:45:19,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-12-09 05:45:19,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 127. [2020-12-09 05:45:19,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-12-09 05:45:19,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 150 transitions. [2020-12-09 05:45:19,804 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 150 transitions. Word has length 36 [2020-12-09 05:45:19,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:45:19,804 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 150 transitions. [2020-12-09 05:45:19,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-09 05:45:19,804 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 150 transitions. [2020-12-09 05:45:19,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-09 05:45:19,804 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:45:19,804 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:45:20,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2020-12-09 05:45:20,006 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 05:45:20,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:45:20,007 INFO L82 PathProgramCache]: Analyzing trace with hash 274665619, now seen corresponding path program 1 times [2020-12-09 05:45:20,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:45:20,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144938279] [2020-12-09 05:45:20,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:45:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:45:20,045 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:20,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144938279] [2020-12-09 05:45:20,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838450190] [2020-12-09 05:45:20,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/bin/utaipan/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 [2020-12-09 05:45:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:45:20,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 05:45:20,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:45:20,118 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:20,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:45:20,168 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:20,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1850583677] [2020-12-09 05:45:20,170 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2020-12-09 05:45:20,170 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 05:45:20,170 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 05:45:20,170 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 05:45:20,170 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 05:45:20,350 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 05:45:20,494 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-12-09 05:45:20,634 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-09 05:45:20,765 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-12-09 05:45:22,501 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 80 [2020-12-09 05:45:22,726 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 75 [2020-12-09 05:45:22,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 05:45:22,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [5, 5, 5] total 31 [2020-12-09 05:45:22,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891431880] [2020-12-09 05:45:22,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-09 05:45:22,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:45:22,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-09 05:45:22,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=808, Unknown=0, NotChecked=0, Total=930 [2020-12-09 05:45:22,811 INFO L87 Difference]: Start difference. First operand 127 states and 150 transitions. Second operand 24 states. [2020-12-09 05:45:23,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:45:23,413 INFO L93 Difference]: Finished difference Result 187 states and 208 transitions. [2020-12-09 05:45:23,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-09 05:45:23,414 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 36 [2020-12-09 05:45:23,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:45:23,414 INFO L225 Difference]: With dead ends: 187 [2020-12-09 05:45:23,415 INFO L226 Difference]: Without dead ends: 186 [2020-12-09 05:45:23,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 74 SyntacticMatches, 8 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=128, Invalid=864, Unknown=0, NotChecked=0, Total=992 [2020-12-09 05:45:23,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-12-09 05:45:23,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 127. [2020-12-09 05:45:23,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-12-09 05:45:23,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 150 transitions. [2020-12-09 05:45:23,423 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 150 transitions. Word has length 36 [2020-12-09 05:45:23,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:45:23,424 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 150 transitions. [2020-12-09 05:45:23,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-09 05:45:23,424 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 150 transitions. [2020-12-09 05:45:23,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-09 05:45:23,424 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:45:23,424 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:45:23,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2020-12-09 05:45:23,625 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 05:45:23,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:45:23,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1934453325, now seen corresponding path program 1 times [2020-12-09 05:45:23,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:45:23,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344302036] [2020-12-09 05:45:23,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:45:23,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:45:23,678 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:23,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344302036] [2020-12-09 05:45:23,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029587595] [2020-12-09 05:45:23,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/bin/utaipan/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 [2020-12-09 05:45:23,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:45:23,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 05:45:23,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:45:23,747 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:23,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:45:23,798 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:23,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1008148416] [2020-12-09 05:45:23,799 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2020-12-09 05:45:23,799 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 05:45:23,800 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 05:45:23,800 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 05:45:23,800 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 05:45:23,965 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 05:45:24,100 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-12-09 05:45:24,244 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-09 05:45:24,383 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-12-09 05:45:26,199 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 82 [2020-12-09 05:45:26,494 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 85 [2020-12-09 05:45:26,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 05:45:26,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [5, 5, 5] total 31 [2020-12-09 05:45:26,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783808974] [2020-12-09 05:45:26,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-09 05:45:26,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:45:26,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-09 05:45:26,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2020-12-09 05:45:26,592 INFO L87 Difference]: Start difference. First operand 127 states and 150 transitions. Second operand 24 states. [2020-12-09 05:45:27,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:45:27,213 INFO L93 Difference]: Finished difference Result 177 states and 202 transitions. [2020-12-09 05:45:27,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-09 05:45:27,214 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 36 [2020-12-09 05:45:27,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:45:27,215 INFO L225 Difference]: With dead ends: 177 [2020-12-09 05:45:27,215 INFO L226 Difference]: Without dead ends: 176 [2020-12-09 05:45:27,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 74 SyntacticMatches, 8 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=134, Invalid=858, Unknown=0, NotChecked=0, Total=992 [2020-12-09 05:45:27,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-12-09 05:45:27,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 127. [2020-12-09 05:45:27,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-12-09 05:45:27,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 150 transitions. [2020-12-09 05:45:27,224 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 150 transitions. Word has length 36 [2020-12-09 05:45:27,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:45:27,224 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 150 transitions. [2020-12-09 05:45:27,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-09 05:45:27,224 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 150 transitions. [2020-12-09 05:45:27,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-09 05:45:27,225 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:45:27,225 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 05:45:27,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable131 [2020-12-09 05:45:27,426 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 05:45:27,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:45:27,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1967134017, now seen corresponding path program 1 times [2020-12-09 05:45:27,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:45:27,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674926503] [2020-12-09 05:45:27,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:45:27,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:45:27,451 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:27,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674926503] [2020-12-09 05:45:27,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635148814] [2020-12-09 05:45:27,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/bin/utaipan/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 [2020-12-09 05:45:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:45:27,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 05:45:27,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:45:27,524 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:27,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:45:27,572 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:27,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1985240763] [2020-12-09 05:45:27,574 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2020-12-09 05:45:27,574 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 05:45:27,574 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 05:45:27,574 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 05:45:27,574 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 05:45:27,760 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 05:45:28,120 WARN L197 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 95 [2020-12-09 05:45:28,266 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-12-09 05:45:28,429 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-09 05:45:28,581 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-12-09 05:45:30,430 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 82 [2020-12-09 05:45:30,654 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 77 [2020-12-09 05:45:31,031 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 87 [2020-12-09 05:45:31,135 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:45:31,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 05:45:31,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2020-12-09 05:45:31,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879512574] [2020-12-09 05:45:31,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 05:45:31,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:45:31,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 05:45:31,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2020-12-09 05:45:31,137 INFO L87 Difference]: Start difference. First operand 127 states and 150 transitions. Second operand 9 states. [2020-12-09 05:45:31,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:45:31,218 INFO L93 Difference]: Finished difference Result 281 states and 326 transitions. [2020-12-09 05:45:31,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 05:45:31,218 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-12-09 05:45:31,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:45:31,219 INFO L225 Difference]: With dead ends: 281 [2020-12-09 05:45:31,219 INFO L226 Difference]: Without dead ends: 192 [2020-12-09 05:45:31,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 79 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2020-12-09 05:45:31,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-12-09 05:45:31,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 147. [2020-12-09 05:45:31,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-12-09 05:45:31,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 174 transitions. [2020-12-09 05:45:31,229 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 174 transitions. Word has length 37 [2020-12-09 05:45:31,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:45:31,229 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 174 transitions. [2020-12-09 05:45:31,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 05:45:31,229 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 174 transitions. [2020-12-09 05:45:31,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-09 05:45:31,230 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:45:31,230 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:45:31,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:45:31,430 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 05:45:31,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:45:31,431 INFO L82 PathProgramCache]: Analyzing trace with hash 2084163428, now seen corresponding path program 1 times [2020-12-09 05:45:31,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:45:31,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293481886] [2020-12-09 05:45:31,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:45:31,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:45:31,468 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:31,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293481886] [2020-12-09 05:45:31,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792121885] [2020-12-09 05:45:31,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/bin/utaipan/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 [2020-12-09 05:45:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:45:31,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 05:45:31,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:45:31,543 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:31,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:45:31,597 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:31,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [218526688] [2020-12-09 05:45:31,599 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2020-12-09 05:45:31,599 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 05:45:31,599 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 05:45:31,599 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 05:45:31,599 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 05:45:31,787 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 05:45:31,930 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-12-09 05:45:32,076 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-09 05:45:32,225 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-12-09 05:45:34,011 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 69 [2020-12-09 05:45:34,475 WARN L197 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 81 [2020-12-09 05:45:34,990 WARN L197 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 89 [2020-12-09 05:45:34,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 05:45:34,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [5, 5, 5] total 31 [2020-12-09 05:45:34,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684422063] [2020-12-09 05:45:34,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-09 05:45:34,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:45:34,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-09 05:45:34,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=793, Unknown=0, NotChecked=0, Total=930 [2020-12-09 05:45:34,992 INFO L87 Difference]: Start difference. First operand 147 states and 174 transitions. Second operand 24 states. [2020-12-09 05:45:35,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:45:35,595 INFO L93 Difference]: Finished difference Result 175 states and 201 transitions. [2020-12-09 05:45:35,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-09 05:45:35,595 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 37 [2020-12-09 05:45:35,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:45:35,596 INFO L225 Difference]: With dead ends: 175 [2020-12-09 05:45:35,596 INFO L226 Difference]: Without dead ends: 173 [2020-12-09 05:45:35,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 76 SyntacticMatches, 9 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=143, Invalid=849, Unknown=0, NotChecked=0, Total=992 [2020-12-09 05:45:35,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-12-09 05:45:35,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 129. [2020-12-09 05:45:35,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-12-09 05:45:35,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 150 transitions. [2020-12-09 05:45:35,605 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 150 transitions. Word has length 37 [2020-12-09 05:45:35,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:45:35,605 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 150 transitions. [2020-12-09 05:45:35,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-09 05:45:35,606 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 150 transitions. [2020-12-09 05:45:35,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-09 05:45:35,606 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:45:35,606 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:45:35,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2020-12-09 05:45:35,807 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 05:45:35,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:45:35,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1960666421, now seen corresponding path program 1 times [2020-12-09 05:45:35,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:45:35,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761490453] [2020-12-09 05:45:35,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:45:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:45:35,881 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:35,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761490453] [2020-12-09 05:45:35,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133824210] [2020-12-09 05:45:35,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/bin/utaipan/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 [2020-12-09 05:45:35,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:45:35,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 05:45:35,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:45:35,976 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:35,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:45:36,031 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:36,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [488547798] [2020-12-09 05:45:36,032 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2020-12-09 05:45:36,032 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 05:45:36,033 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 05:45:36,033 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 05:45:36,033 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 05:45:36,219 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 05:45:36,599 WARN L197 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 93 [2020-12-09 05:45:36,753 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-12-09 05:45:36,916 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-09 05:45:37,081 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-12-09 05:45:39,199 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 80 [2020-12-09 05:45:39,432 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 75 [2020-12-09 05:45:39,867 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 85 [2020-12-09 05:45:40,001 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:45:40,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 05:45:40,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2020-12-09 05:45:40,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344234906] [2020-12-09 05:45:40,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 05:45:40,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:45:40,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 05:45:40,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2020-12-09 05:45:40,003 INFO L87 Difference]: Start difference. First operand 129 states and 150 transitions. Second operand 9 states. [2020-12-09 05:45:40,431 WARN L197 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 10 [2020-12-09 05:45:41,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:45:41,305 INFO L93 Difference]: Finished difference Result 222 states and 258 transitions. [2020-12-09 05:45:41,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 05:45:41,305 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-12-09 05:45:41,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:45:41,306 INFO L225 Difference]: With dead ends: 222 [2020-12-09 05:45:41,306 INFO L226 Difference]: Without dead ends: 130 [2020-12-09 05:45:41,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 78 SyntacticMatches, 8 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=159, Invalid=1031, Unknown=0, NotChecked=0, Total=1190 [2020-12-09 05:45:41,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-12-09 05:45:41,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 129. [2020-12-09 05:45:41,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-12-09 05:45:41,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 146 transitions. [2020-12-09 05:45:41,315 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 146 transitions. Word has length 38 [2020-12-09 05:45:41,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:45:41,315 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 146 transitions. [2020-12-09 05:45:41,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 05:45:41,315 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 146 transitions. [2020-12-09 05:45:41,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-09 05:45:41,316 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:45:41,316 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:45:41,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:45:41,517 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 05:45:41,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:45:41,518 INFO L82 PathProgramCache]: Analyzing trace with hash 687903487, now seen corresponding path program 2 times [2020-12-09 05:45:41,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:45:41,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290817749] [2020-12-09 05:45:41,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:45:41,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:45:41,614 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:41,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290817749] [2020-12-09 05:45:41,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739403196] [2020-12-09 05:45:41,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/bin/utaipan/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 [2020-12-09 05:45:41,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-12-09 05:45:41,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 05:45:41,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 05:45:41,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:45:41,765 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:41,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:45:41,869 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:41,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1987179986] [2020-12-09 05:45:41,870 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2020-12-09 05:45:41,870 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 05:45:41,871 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 05:45:41,871 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 05:45:41,871 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 05:45:42,080 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 05:45:42,969 WARN L197 SmtUtils]: Spent 823.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 95 [2020-12-09 05:45:43,105 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-12-09 05:45:43,267 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-09 05:45:43,436 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-12-09 05:45:45,698 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 82 [2020-12-09 05:45:45,943 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 77 [2020-12-09 05:45:46,432 WARN L197 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 87 [2020-12-09 05:45:46,565 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:45:46,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 05:45:46,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2020-12-09 05:45:46,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187214412] [2020-12-09 05:45:46,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-09 05:45:46,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:45:46,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-09 05:45:46,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=1204, Unknown=0, NotChecked=0, Total=1482 [2020-12-09 05:45:46,567 INFO L87 Difference]: Start difference. First operand 129 states and 146 transitions. Second operand 17 states. [2020-12-09 05:45:46,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:45:46,755 INFO L93 Difference]: Finished difference Result 319 states and 366 transitions. [2020-12-09 05:45:46,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-09 05:45:46,755 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 57 [2020-12-09 05:45:46,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:45:46,756 INFO L225 Difference]: With dead ends: 319 [2020-12-09 05:45:46,757 INFO L226 Difference]: Without dead ends: 230 [2020-12-09 05:45:46,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 131 SyntacticMatches, 10 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 974 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=278, Invalid=1204, Unknown=0, NotChecked=0, Total=1482 [2020-12-09 05:45:46,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-12-09 05:45:46,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 169. [2020-12-09 05:45:46,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-12-09 05:45:46,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 194 transitions. [2020-12-09 05:45:46,767 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 194 transitions. Word has length 57 [2020-12-09 05:45:46,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:45:46,769 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 194 transitions. [2020-12-09 05:45:46,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-09 05:45:46,769 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 194 transitions. [2020-12-09 05:45:46,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-09 05:45:46,770 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:45:46,770 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:45:46,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable183 [2020-12-09 05:45:46,972 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 05:45:46,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:45:46,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1632516875, now seen corresponding path program 2 times [2020-12-09 05:45:46,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:45:46,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388097084] [2020-12-09 05:45:46,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:45:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:45:47,105 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:47,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388097084] [2020-12-09 05:45:47,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551156494] [2020-12-09 05:45:47,106 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/bin/utaipan/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 [2020-12-09 05:45:47,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-12-09 05:45:47,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 05:45:47,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-09 05:45:47,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:45:47,370 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:47,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:45:49,951 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 05:45:50,651 WARN L197 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 05:45:50,730 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:45:50,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1389030458] [2020-12-09 05:45:50,732 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2020-12-09 05:45:50,732 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 05:45:50,732 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 05:45:50,732 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 05:45:50,732 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 05:45:50,938 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 05:45:51,414 WARN L197 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 93 [2020-12-09 05:45:51,613 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-12-09 05:45:51,843 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-09 05:45:52,050 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-12-09 05:45:54,489 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-12-09 05:45:54,695 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-12-09 05:45:54,899 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-12-09 05:45:55,712 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 80 [2020-12-09 05:45:56,044 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 75 [2020-12-09 05:45:56,787 WARN L197 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 85 [2020-12-09 05:45:57,004 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:45:57,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 05:45:57,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 19 [2020-12-09 05:45:57,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147661228] [2020-12-09 05:45:57,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-09 05:45:57,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:45:57,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-09 05:45:57,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1550, Unknown=1, NotChecked=0, Total=1806 [2020-12-09 05:45:57,005 INFO L87 Difference]: Start difference. First operand 169 states and 194 transitions. Second operand 19 states. [2020-12-09 05:46:01,460 WARN L197 SmtUtils]: Spent 4.30 s on a formula simplification. DAG size of input: 38 DAG size of output: 10 [2020-12-09 05:46:07,016 WARN L197 SmtUtils]: Spent 2.97 s on a formula simplification. DAG size of input: 32 DAG size of output: 10 [2020-12-09 05:46:18,479 WARN L197 SmtUtils]: Spent 5.34 s on a formula simplification. DAG size of input: 28 DAG size of output: 10 [2020-12-09 05:46:34,036 WARN L197 SmtUtils]: Spent 4.24 s on a formula simplification. DAG size of input: 20 DAG size of output: 10 [2020-12-09 05:46:37,300 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2020-12-09 05:46:44,196 WARN L197 SmtUtils]: Spent 2.17 s on a formula simplification that was a NOOP. DAG size: 26 [2020-12-09 05:47:12,336 WARN L197 SmtUtils]: Spent 15.49 s on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2020-12-09 05:47:35,640 WARN L197 SmtUtils]: Spent 9.22 s on a formula simplification. DAG size of input: 36 DAG size of output: 26 [2020-12-09 05:48:34,543 WARN L197 SmtUtils]: Spent 46.48 s on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2020-12-09 05:48:49,900 WARN L197 SmtUtils]: Spent 4.85 s on a formula simplification. DAG size of input: 28 DAG size of output: 22 [2020-12-09 05:49:12,824 WARN L197 SmtUtils]: Spent 11.26 s on a formula simplification. DAG size of input: 34 DAG size of output: 22 [2020-12-09 05:49:49,767 WARN L197 SmtUtils]: Spent 24.41 s on a formula simplification. DAG size of input: 32 DAG size of output: 26 [2020-12-09 05:50:19,645 WARN L197 SmtUtils]: Spent 25.37 s on a formula simplification. DAG size of input: 38 DAG size of output: 26 [2020-12-09 05:50:25,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:50:25,391 INFO L93 Difference]: Finished difference Result 369 states and 414 transitions. [2020-12-09 05:50:25,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-09 05:50:25,393 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 58 [2020-12-09 05:50:25,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:50:25,394 INFO L225 Difference]: With dead ends: 369 [2020-12-09 05:50:25,394 INFO L226 Difference]: Without dead ends: 277 [2020-12-09 05:50:25,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 122 SyntacticMatches, 19 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1255 ImplicationChecksByTransitivity, 228.5s TimeCoverageRelationStatistics Valid=568, Invalid=2715, Unknown=23, NotChecked=0, Total=3306 [2020-12-09 05:50:25,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-12-09 05:50:25,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 169. [2020-12-09 05:50:25,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-12-09 05:50:25,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 186 transitions. [2020-12-09 05:50:25,405 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 186 transitions. Word has length 58 [2020-12-09 05:50:25,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:50:25,406 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 186 transitions. [2020-12-09 05:50:25,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-09 05:50:25,406 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 186 transitions. [2020-12-09 05:50:25,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-09 05:50:25,406 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:50:25,406 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:50:25,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:50:25,608 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 05:50:25,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:50:25,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1360921471, now seen corresponding path program 3 times [2020-12-09 05:50:25,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:50:25,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424616048] [2020-12-09 05:50:25,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:50:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:50:25,847 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:50:25,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424616048] [2020-12-09 05:50:25,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881963697] [2020-12-09 05:50:25,847 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/bin/utaipan/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 [2020-12-09 05:50:25,892 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-09 05:50:25,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 05:50:25,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-09 05:50:25,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:50:26,027 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:50:26,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:50:26,648 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:50:26,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1093596305] [2020-12-09 05:50:26,650 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2020-12-09 05:50:26,650 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 05:50:26,650 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 05:50:26,651 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 05:50:26,651 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 05:50:26,916 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 05:50:27,752 WARN L197 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 95 [2020-12-09 05:50:28,011 WARN L197 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-12-09 05:50:28,272 WARN L197 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-09 05:50:28,511 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-12-09 05:50:28,719 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2020-12-09 05:50:28,874 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2020-12-09 05:50:29,967 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2020-12-09 05:50:30,396 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-12-09 05:50:30,592 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-12-09 05:50:30,773 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-12-09 05:50:31,319 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-12-09 05:50:31,612 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-12-09 05:50:31,885 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-12-09 05:50:32,499 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-12-09 05:50:32,939 WARN L197 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 82 [2020-12-09 05:50:33,339 WARN L197 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 77 [2020-12-09 05:50:34,073 WARN L197 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 87 [2020-12-09 05:50:34,325 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:50:34,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 05:50:34,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2020-12-09 05:50:34,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111781196] [2020-12-09 05:50:34,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-12-09 05:50:34,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:50:34,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-12-09 05:50:34,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=734, Invalid=2236, Unknown=0, NotChecked=0, Total=2970 [2020-12-09 05:50:34,328 INFO L87 Difference]: Start difference. First operand 169 states and 186 transitions. Second operand 33 states. [2020-12-09 05:50:34,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:50:34,680 INFO L93 Difference]: Finished difference Result 431 states and 494 transitions. [2020-12-09 05:50:34,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-09 05:50:34,681 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 97 [2020-12-09 05:50:34,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:50:34,682 INFO L225 Difference]: With dead ends: 431 [2020-12-09 05:50:34,682 INFO L226 Difference]: Without dead ends: 342 [2020-12-09 05:50:34,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 235 SyntacticMatches, 18 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2190 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=734, Invalid=2236, Unknown=0, NotChecked=0, Total=2970 [2020-12-09 05:50:34,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-12-09 05:50:34,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 249. [2020-12-09 05:50:34,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-12-09 05:50:34,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 282 transitions. [2020-12-09 05:50:34,697 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 282 transitions. Word has length 97 [2020-12-09 05:50:34,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:50:34,697 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 282 transitions. [2020-12-09 05:50:34,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-12-09 05:50:34,697 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 282 transitions. [2020-12-09 05:50:34,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-09 05:50:34,698 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:50:34,698 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:50:34,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:50:34,899 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 05:50:34,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:50:34,900 INFO L82 PathProgramCache]: Analyzing trace with hash 2051171445, now seen corresponding path program 3 times [2020-12-09 05:50:34,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:50:34,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126179728] [2020-12-09 05:50:34,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:50:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:50:35,260 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 0 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:50:35,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126179728] [2020-12-09 05:50:35,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371946256] [2020-12-09 05:50:35,261 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7649142-8053-4c70-89c7-f45a4e5fc775/bin/utaipan/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 [2020-12-09 05:50:35,315 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-09 05:50:35,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 05:50:35,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-09 05:50:35,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:50:35,820 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 0 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:50:35,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:50:37,756 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 0 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:50:37,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1623620829] [2020-12-09 05:50:37,757 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2020-12-09 05:50:37,757 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 05:50:37,757 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 05:50:37,758 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 05:50:37,758 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 05:50:38,029 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 05:50:38,995 WARN L197 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 93 [2020-12-09 05:50:39,387 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-12-09 05:50:39,804 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-09 05:50:40,209 WARN L197 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-12-09 05:50:40,583 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2020-12-09 05:50:40,839 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2020-12-09 05:50:43,113 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-12-09 05:50:44,292 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-09 05:50:44,593 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-12-09 05:50:44,915 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2020-12-09 05:50:45,164 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-09 05:50:45,544 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-12-09 05:50:45,937 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-12-09 05:50:46,337 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-12-09 05:50:47,417 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-12-09 05:50:48,149 WARN L197 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 80 [2020-12-09 05:50:48,698 WARN L197 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 75 [2020-12-09 05:50:49,835 WARN L197 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 85 [2020-12-09 05:50:50,313 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:50:50,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 05:50:50,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2020-12-09 05:50:50,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232600424] [2020-12-09 05:50:50,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-12-09 05:50:50,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:50:50,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-12-09 05:50:50,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=2753, Unknown=0, NotChecked=0, Total=3192 [2020-12-09 05:50:50,315 INFO L87 Difference]: Start difference. First operand 249 states and 282 transitions. Second operand 33 states. [2020-12-09 05:50:59,770 WARN L197 SmtUtils]: Spent 7.45 s on a formula simplification. DAG size of input: 38 DAG size of output: 10 [2020-12-09 05:51:21,895 WARN L197 SmtUtils]: Spent 18.86 s on a formula simplification. DAG size of input: 34 DAG size of output: 10 [2020-12-09 05:51:31,347 WARN L197 SmtUtils]: Spent 4.84 s on a formula simplification. DAG size of input: 30 DAG size of output: 10 [2020-12-09 05:51:39,011 WARN L197 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 10 [2020-12-09 05:51:47,712 WARN L197 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 22 DAG size of output: 10 [2020-12-09 05:52:03,334 WARN L197 SmtUtils]: Spent 3.35 s on a formula simplification. DAG size of input: 18 DAG size of output: 10 [2020-12-09 05:52:13,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:52:13,923 INFO L93 Difference]: Finished difference Result 342 states and 390 transitions. [2020-12-09 05:52:13,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-09 05:52:13,925 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 98 [2020-12-09 05:52:13,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:52:13,927 INFO L225 Difference]: With dead ends: 342 [2020-12-09 05:52:13,927 INFO L226 Difference]: Without dead ends: 250 [2020-12-09 05:52:13,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 222 SyntacticMatches, 32 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1498 ImplicationChecksByTransitivity, 94.6s TimeCoverageRelationStatistics Valid=705, Invalid=3571, Unknown=14, NotChecked=0, Total=4290 [2020-12-09 05:52:13,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-12-09 05:52:13,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 249. [2020-12-09 05:52:13,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-12-09 05:52:13,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 272 transitions. [2020-12-09 05:52:13,942 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 272 transitions. Word has length 98 [2020-12-09 05:52:13,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:52:13,942 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 272 transitions. [2020-12-09 05:52:13,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-12-09 05:52:13,942 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 272 transitions. [2020-12-09 05:52:13,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-09 05:52:13,943 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:52:13,943 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:52:14,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable222 [2020-12-09 05:52:14,144 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 05:52:14,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:52:14,146 INFO L82 PathProgramCache]: Analyzing trace with hash 859631573, now seen corresponding path program 4 times [2020-12-09 05:52:14,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:52:14,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855527558] [2020-12-09 05:52:14,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:52:14,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 05:52:14,201 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 05:52:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 05:52:14,243 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 05:52:14,268 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 05:52:14,268 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 05:52:14,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2020-12-09 05:52:14,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:52:14 BoogieIcfgContainer [2020-12-09 05:52:14,330 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 05:52:14,330 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 05:52:14,330 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 05:52:14,330 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 05:52:14,331 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:44:53" (3/4) ... [2020-12-09 05:52:14,333 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 05:52:14,333 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 05:52:14,334 INFO L168 Benchmark]: Toolchain (without parser) took 441899.78 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 63.6 MB in the beginning and 37.0 MB in the end (delta: 26.6 MB). Peak memory consumption was 73.5 MB. Max. memory is 16.1 GB. [2020-12-09 05:52:14,334 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 100.7 MB. Free memory was 79.9 MB in the beginning and 79.8 MB in the end (delta: 78.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:52:14,334 INFO L168 Benchmark]: CACSL2BoogieTranslator took 231.39 ms. Allocated memory is still 100.7 MB. Free memory was 63.4 MB in the beginning and 74.4 MB in the end (delta: -11.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 05:52:14,334 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.39 ms. Allocated memory is still 100.7 MB. Free memory was 74.4 MB in the beginning and 71.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:52:14,335 INFO L168 Benchmark]: Boogie Preprocessor took 23.91 ms. Allocated memory is still 100.7 MB. Free memory was 71.9 MB in the beginning and 70.2 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:52:14,335 INFO L168 Benchmark]: RCFGBuilder took 589.80 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 70.2 MB in the beginning and 75.5 MB in the end (delta: -5.3 MB). Peak memory consumption was 41.5 MB. Max. memory is 16.1 GB. [2020-12-09 05:52:14,335 INFO L168 Benchmark]: TraceAbstraction took 441013.79 ms. Allocated memory was 121.6 MB in the beginning and 146.8 MB in the end (delta: 25.2 MB). Free memory was 74.6 MB in the beginning and 37.0 MB in the end (delta: 37.6 MB). Peak memory consumption was 63.6 MB. Max. memory is 16.1 GB. [2020-12-09 05:52:14,335 INFO L168 Benchmark]: Witness Printer took 3.00 ms. Allocated memory is still 146.8 MB. Free memory is still 37.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:52:14,337 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 100.7 MB. Free memory was 79.9 MB in the beginning and 79.8 MB in the end (delta: 78.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 231.39 ms. Allocated memory is still 100.7 MB. Free memory was 63.4 MB in the beginning and 74.4 MB in the end (delta: -11.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.39 ms. Allocated memory is still 100.7 MB. Free memory was 74.4 MB in the beginning and 71.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.91 ms. Allocated memory is still 100.7 MB. Free memory was 71.9 MB in the beginning and 70.2 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 589.80 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 70.2 MB in the beginning and 75.5 MB in the end (delta: -5.3 MB). Peak memory consumption was 41.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 441013.79 ms. Allocated memory was 121.6 MB in the beginning and 146.8 MB in the end (delta: 25.2 MB). Free memory was 74.6 MB in the beginning and 37.0 MB in the end (delta: 37.6 MB). Peak memory consumption was 63.6 MB. Max. memory is 16.1 GB. * Witness Printer took 3.00 ms. Allocated memory is still 146.8 MB. Free memory is still 37.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 167]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of bitwiseOr at line 165, overapproximation of bitwiseAnd at line 166. Possible FailurePath: [L213] unsigned int a ; [L214] unsigned int ma = __VERIFIER_nondet_uint(); [L215] signed char ea = __VERIFIER_nondet_char(); [L216] unsigned int b ; [L217] unsigned int mb = __VERIFIER_nondet_uint(); [L218] signed char eb = __VERIFIER_nondet_char(); [L219] unsigned int r_mul ; [L220] unsigned int zero ; [L221] unsigned int one ; [L222] int sb ; [L223] int tmp ; [L224] int tmp___0 ; [L225] int tmp___1 ; [L226] int __retres16 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L230] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND FALSE !(m < 1U << 24U) [L68] m = m & ~ (1U << 24U) [L69] EXPR e + 128 [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L231] one = base2flt(1, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L232] a = base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] EXPR e + 128 [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L233] b = base2flt(mb, eb) [L235] COND FALSE !(b < zero) [L238] COND TRUE b > zero [L239] tmp = 1 [L243] sb = tmp [L140] unsigned int res ; [L141] unsigned int ma ; [L142] unsigned int mb ; [L143] unsigned long long accu ; [L144] int ea ; [L145] int eb ; [L146] unsigned int tmp ; [L147] unsigned int __retres10 ; [L150] COND FALSE !(a < b) [L157] COND FALSE !(! b) [L163] ma = a & ((1U << 24U) - 1U) [L164] EXPR (int )(a >> 24U) - 128 [L164] ea = (int )(a >> 24U) - 128 [L165] ma = ma | (1U << 24U) [L166] mb = b & ((1U << 24U) - 1U) [L167] (int )(b >> 24U) - 128 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 118 locations, 34 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 440.9s, OverallIterations: 32, TraceHistogramMax: 24, AutomataDifference: 361.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2591 SDtfs, 4249 SDslu, 7782 SDs, 0 SdLazy, 7766 SolverSat, 443 SolverUnsat, 18 SolverUnknown, 0 SolverNotchecked, 56.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2544 GetRequests, 1762 SyntacticMatches, 162 SemanticMatches, 620 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11388 ImplicationChecksByTransitivity, 368.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=249occurred in iteration=30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 31 MinimizatonAttempts, 1178 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 9.5s InterpolantComputationTime, 1950 NumberOfCodeBlocks, 1950 NumberOfCodeBlocksAsserted, 65 NumberOfCheckSat, 2546 ConstructedInterpolants, 0 QuantifiedInterpolants, 478326 SizeOfPredicates, 44 NumberOfNonLiveVariables, 2810 ConjunctsInSsa, 202 ConjunctsInUnsatCore, 71 InterpolantComputations, 17 PerfectInterpolantSequences, 48/3651 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME[ms]: 2264, ICFG_INTERPRETER_ENTERED_PROCEDURES: 11, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 284, DAG_INTERPRETER_EARLY_EXITS: 2, TOOLS_POST_APPLICATIONS: 454, TOOLS_POST_TIME[ms]: 841, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 454, TOOLS_QUANTIFIERELIM_TIME[ms]: 779, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 89, FLUID_QUERY_TIME[ms]: 14, FLUID_QUERIES: 840, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME[ms]: 0, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 22, DOMAIN_WIDEN_TIME[ms]: 813, DOMAIN_ISSUBSETEQ_APPLICATIONS: 33, DOMAIN_ISSUBSETEQ_TIME[ms]: 98, DOMAIN_ISBOTTOM_APPLICATIONS: 284, DOMAIN_ISBOTTOM_TIME[ms]: 381, LOOP_SUMMARIZER_APPLICATIONS: 11, LOOP_SUMMARIZER_CACHE_MISSES: 11, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 1056, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 1055, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 33, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 3, PATH_EXPR_TIME[ms]: 8, REGEX_TO_DAG_TIME[ms]: 4, DAG_COMPRESSION_TIME[ms]: 41, DAG_COMPRESSION_PROCESSED_NODES: 4531, DAG_COMPRESSION_RETAINED_NODES: 718, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...