./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark16_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark16_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 150a66a836464f467fb90ec51b7c24919c6718d6acc15c3a2ae1cbeb65f65711 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:45:50,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:45:50,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:45:50,720 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:45:50,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:45:50,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:45:50,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:45:50,732 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:45:50,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:45:50,742 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:45:50,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:45:50,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:45:50,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:45:50,748 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:45:50,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:45:50,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:45:50,760 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:45:50,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:45:50,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:45:50,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:45:50,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:45:50,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:45:50,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:45:50,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:45:50,783 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:45:50,783 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:45:50,784 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:45:50,786 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:45:50,786 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:45:50,788 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:45:50,788 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:45:50,789 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:45:50,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:45:50,792 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:45:50,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:45:50,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:45:50,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:45:50,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:45:50,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:45:50,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:45:50,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:45:50,797 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-11-03 03:45:50,835 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:45:50,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:45:50,837 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:45:50,837 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:45:50,837 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:45:50,837 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:45:50,837 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:45:50,838 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:45:50,844 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:45:50,844 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:45:50,845 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:45:50,845 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:45:50,846 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:45:50,846 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:45:50,846 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:45:50,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:45:50,847 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:45:50,847 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 03:45:50,848 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:45:50,848 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:45:50,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:45:50,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:45:50,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:45:50,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:45:50,849 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-03 03:45:50,849 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:45:50,849 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:45:50,850 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:45:50,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:45:50,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:45:50,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:45:50,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:45:50,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:45:50,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:45:50,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:45:50,852 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:45:50,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:45:50,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:45:50,852 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:45:50,853 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:45:50,853 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 150a66a836464f467fb90ec51b7c24919c6718d6acc15c3a2ae1cbeb65f65711 [2021-11-03 03:45:51,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:45:51,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:45:51,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:45:51,196 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:45:51,197 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:45:51,198 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/loop-zilu/benchmark16_conjunctive.i [2021-11-03 03:45:51,264 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/data/25c264d4f/fdc3d8faf8494c8c9b4b6798ab14c9b8/FLAGbffbf2d71 [2021-11-03 03:45:51,689 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:45:51,689 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/sv-benchmarks/c/loop-zilu/benchmark16_conjunctive.i [2021-11-03 03:45:51,695 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/data/25c264d4f/fdc3d8faf8494c8c9b4b6798ab14c9b8/FLAGbffbf2d71 [2021-11-03 03:45:52,093 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/data/25c264d4f/fdc3d8faf8494c8c9b4b6798ab14c9b8 [2021-11-03 03:45:52,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:45:52,096 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:45:52,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:45:52,102 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:45:52,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:45:52,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:45:52" (1/1) ... [2021-11-03 03:45:52,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9168c1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:52, skipping insertion in model container [2021-11-03 03:45:52,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:45:52" (1/1) ... [2021-11-03 03:45:52,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:45:52,139 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:45:52,392 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/sv-benchmarks/c/loop-zilu/benchmark16_conjunctive.i[873,886] [2021-11-03 03:45:52,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:45:52,419 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:45:52,434 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/sv-benchmarks/c/loop-zilu/benchmark16_conjunctive.i[873,886] [2021-11-03 03:45:52,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:45:52,465 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:45:52,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:52 WrapperNode [2021-11-03 03:45:52,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:45:52,467 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:45:52,467 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:45:52,468 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:45:52,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:52" (1/1) ... [2021-11-03 03:45:52,482 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:52" (1/1) ... [2021-11-03 03:45:52,500 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:45:52,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:45:52,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:45:52,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:45:52,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:52" (1/1) ... [2021-11-03 03:45:52,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:52" (1/1) ... [2021-11-03 03:45:52,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:52" (1/1) ... [2021-11-03 03:45:52,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:52" (1/1) ... [2021-11-03 03:45:52,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:52" (1/1) ... [2021-11-03 03:45:52,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:52" (1/1) ... [2021-11-03 03:45:52,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:52" (1/1) ... [2021-11-03 03:45:52,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:45:52,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:45:52,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:45:52,522 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:45:52,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:52" (1/1) ... [2021-11-03 03:45:52,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:45:52,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:45:52,563 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:45:52,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:45:52,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 03:45:52,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:45:52,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:45:52,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:45:52,843 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:45:52,843 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-03 03:45:52,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:45:52 BoogieIcfgContainer [2021-11-03 03:45:52,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:45:52,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:45:52,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:45:52,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:45:52,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:45:52" (1/3) ... [2021-11-03 03:45:52,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4beff8d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:45:52, skipping insertion in model container [2021-11-03 03:45:52,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:52" (2/3) ... [2021-11-03 03:45:52,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4beff8d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:45:52, skipping insertion in model container [2021-11-03 03:45:52,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:45:52" (3/3) ... [2021-11-03 03:45:52,866 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark16_conjunctive.i [2021-11-03 03:45:52,871 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:45:52,871 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-03 03:45:52,916 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:45:52,923 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 03:45:52,923 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-03 03:45:52,937 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:52,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-03 03:45:52,941 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:52,941 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-03 03:45:52,942 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-03 03:45:52,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:52,947 INFO L85 PathProgramCache]: Analyzing trace with hash 2509684, now seen corresponding path program 1 times [2021-11-03 03:45:52,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:45:52,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787477752] [2021-11-03 03:45:52,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:52,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:45:53,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:53,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:53,109 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:45:53,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787477752] [2021-11-03 03:45:53,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787477752] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:45:53,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:45:53,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 03:45:53,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268034252] [2021-11-03 03:45:53,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:45:53,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:45:53,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:45:53,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:45:53,133 INFO L87 Difference]: Start difference. First operand has 23 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:53,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:53,198 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2021-11-03 03:45:53,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:45:53,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-03 03:45:53,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:53,207 INFO L225 Difference]: With dead ends: 39 [2021-11-03 03:45:53,207 INFO L226 Difference]: Without dead ends: 32 [2021-11-03 03:45:53,209 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:45:53,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-03 03:45:53,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 22. [2021-11-03 03:45:53,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:53,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-11-03 03:45:53,239 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 4 [2021-11-03 03:45:53,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:53,239 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-11-03 03:45:53,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:53,240 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-11-03 03:45:53,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-03 03:45:53,241 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:53,241 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-03 03:45:53,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 03:45:53,242 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-03 03:45:53,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:53,246 INFO L85 PathProgramCache]: Analyzing trace with hash 2510904, now seen corresponding path program 1 times [2021-11-03 03:45:53,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:45:53,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469847013] [2021-11-03 03:45:53,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:53,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:45:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:53,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:53,316 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:45:53,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469847013] [2021-11-03 03:45:53,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469847013] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:45:53,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:45:53,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 03:45:53,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004853862] [2021-11-03 03:45:53,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:45:53,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:45:53,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:45:53,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:45:53,322 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:53,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:53,374 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2021-11-03 03:45:53,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:45:53,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-03 03:45:53,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:53,377 INFO L225 Difference]: With dead ends: 31 [2021-11-03 03:45:53,377 INFO L226 Difference]: Without dead ends: 29 [2021-11-03 03:45:53,378 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:45:53,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-03 03:45:53,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2021-11-03 03:45:53,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 25 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:53,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2021-11-03 03:45:53,391 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 4 [2021-11-03 03:45:53,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:53,391 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2021-11-03 03:45:53,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:53,392 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2021-11-03 03:45:53,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 03:45:53,392 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:53,392 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 03:45:53,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 03:45:53,394 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-03 03:45:53,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:53,397 INFO L85 PathProgramCache]: Analyzing trace with hash 77800254, now seen corresponding path program 1 times [2021-11-03 03:45:53,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:45:53,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708821400] [2021-11-03 03:45:53,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:53,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:45:53,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:53,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:53,456 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:45:53,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708821400] [2021-11-03 03:45:53,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708821400] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:45:53,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:45:53,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-03 03:45:53,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448438941] [2021-11-03 03:45:53,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:45:53,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:45:53,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:45:53,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:45:53,463 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:53,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:53,495 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2021-11-03 03:45:53,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:45:53,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-03 03:45:53,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:53,498 INFO L225 Difference]: With dead ends: 26 [2021-11-03 03:45:53,498 INFO L226 Difference]: Without dead ends: 25 [2021-11-03 03:45:53,498 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:45:53,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-03 03:45:53,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-03 03:45:53,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.5) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:53,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-11-03 03:45:53,502 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 5 [2021-11-03 03:45:53,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:53,502 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-11-03 03:45:53,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:53,503 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-11-03 03:45:53,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 03:45:53,522 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:53,522 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 03:45:53,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 03:45:53,523 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-03 03:45:53,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:53,524 INFO L85 PathProgramCache]: Analyzing trace with hash 77838085, now seen corresponding path program 1 times [2021-11-03 03:45:53,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:45:53,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545829019] [2021-11-03 03:45:53,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:53,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:45:53,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:53,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:53,551 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:45:53,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545829019] [2021-11-03 03:45:53,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545829019] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:45:53,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:45:53,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 03:45:53,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061754897] [2021-11-03 03:45:53,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:45:53,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:45:53,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:45:53,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:45:53,570 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:53,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:53,612 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2021-11-03 03:45:53,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:45:53,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-03 03:45:53,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:53,614 INFO L225 Difference]: With dead ends: 33 [2021-11-03 03:45:53,615 INFO L226 Difference]: Without dead ends: 26 [2021-11-03 03:45:53,616 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:45:53,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-03 03:45:53,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2021-11-03 03:45:53,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.5) internal successors, (21), 20 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:53,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2021-11-03 03:45:53,626 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 5 [2021-11-03 03:45:53,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:53,626 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2021-11-03 03:45:53,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:53,628 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2021-11-03 03:45:53,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 03:45:53,629 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:53,629 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 03:45:53,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 03:45:53,631 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-03 03:45:53,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:53,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1883159370, now seen corresponding path program 1 times [2021-11-03 03:45:53,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:45:53,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089451675] [2021-11-03 03:45:53,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:53,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:45:53,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:53,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:53,678 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:45:53,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089451675] [2021-11-03 03:45:53,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089451675] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:45:53,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:45:53,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-03 03:45:53,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364827661] [2021-11-03 03:45:53,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:45:53,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:45:53,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:45:53,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:45:53,683 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:53,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:53,706 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-11-03 03:45:53,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:45:53,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-03 03:45:53,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:53,707 INFO L225 Difference]: With dead ends: 21 [2021-11-03 03:45:53,708 INFO L226 Difference]: Without dead ends: 20 [2021-11-03 03:45:53,708 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:45:53,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-03 03:45:53,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-03 03:45:53,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 19 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:53,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-11-03 03:45:53,718 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 6 [2021-11-03 03:45:53,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:53,718 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-11-03 03:45:53,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:53,719 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-11-03 03:45:53,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-03 03:45:53,720 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:53,720 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:45:53,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 03:45:53,721 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-03 03:45:53,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:53,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1751601728, now seen corresponding path program 1 times [2021-11-03 03:45:53,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:45:53,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020781670] [2021-11-03 03:45:53,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:53,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:45:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:53,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:53,775 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:45:53,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020781670] [2021-11-03 03:45:53,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020781670] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:45:53,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:45:53,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 03:45:53,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327812143] [2021-11-03 03:45:53,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:45:53,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:45:53,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:45:53,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:45:53,781 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:53,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:53,800 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-11-03 03:45:53,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:45:53,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-03 03:45:53,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:53,801 INFO L225 Difference]: With dead ends: 24 [2021-11-03 03:45:53,801 INFO L226 Difference]: Without dead ends: 23 [2021-11-03 03:45:53,802 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:45:53,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-03 03:45:53,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-03 03:45:53,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 22 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:53,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-11-03 03:45:53,806 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 7 [2021-11-03 03:45:53,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:53,806 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-11-03 03:45:53,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:53,807 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-11-03 03:45:53,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 03:45:53,807 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:53,807 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:45:53,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 03:45:53,808 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-03 03:45:53,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:53,809 INFO L85 PathProgramCache]: Analyzing trace with hash -337917950, now seen corresponding path program 1 times [2021-11-03 03:45:53,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:45:53,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260267871] [2021-11-03 03:45:53,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:53,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:45:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:53,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:53,864 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:45:53,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260267871] [2021-11-03 03:45:53,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260267871] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 03:45:53,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062972106] [2021-11-03 03:45:53,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:53,865 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:45:53,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:45:53,870 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:45:53,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 03:45:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:53,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:45:53,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:45:53,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:53,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:45:54,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:54,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062972106] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:45:54,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1700040020] [2021-11-03 03:45:54,071 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-03 03:45:54,071 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 03:45:54,075 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 03:45:54,097 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 03:45:54,097 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 03:45:54,147 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:54,152 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:45:54,153 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:54,153 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 03:45:54,159 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:45:54,159 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:54,161 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 03:45:54,172 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-03 03:45:54,197 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_8|], 10=[|v_#valid_9|]} [2021-11-03 03:45:54,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:54,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-03 03:45:54,226 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:54,227 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:45:54,228 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:54,228 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:45:54,229 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:45:54,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:54,263 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:54,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:54,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:54,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:54,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:54,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 03:45:54,289 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:54,293 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:45:54,294 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:54,295 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:45:54,295 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:45:54,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:54,315 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:54,318 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:54,320 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-03 03:45:54,321 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:45:54,322 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-11-03 03:45:54,341 INFO L180 QuantifierPusher]: treesize reduction 16, result has 84.5 percent of original size [2021-11-03 03:45:54,349 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-03 03:45:54,362 INFO L180 QuantifierPusher]: treesize reduction 8, result has 91.5 percent of original size [2021-11-03 03:45:54,373 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-03 03:45:54,384 INFO L180 QuantifierPusher]: treesize reduction 8, result has 91.5 percent of original size [2021-11-03 03:45:54,389 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:45:54,393 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:54,399 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:45:54,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:54,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:54,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:54,504 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.7 percent of original size [2021-11-03 03:45:54,522 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 207 [2021-11-03 03:45:54,537 INFO L180 QuantifierPusher]: treesize reduction 7, result has 96.8 percent of original size [2021-11-03 03:45:54,552 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-11-03 03:45:54,562 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:54,572 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-11-03 03:45:54,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:54,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:54,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:54,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:54,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:54,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:54,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:54,678 INFO L180 QuantifierPusher]: treesize reduction 29, result has 56.1 percent of original size [2021-11-03 03:45:54,682 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:45:54,686 INFO L180 QuantifierPusher]: treesize reduction 3, result has 93.3 percent of original size [2021-11-03 03:45:54,691 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:45:54,693 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:54,698 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:45:54,706 INFO L180 QuantifierPusher]: treesize reduction 29, result has 56.1 percent of original size [2021-11-03 03:45:54,710 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:45:54,721 INFO L180 QuantifierPusher]: treesize reduction 3, result has 93.3 percent of original size [2021-11-03 03:45:54,724 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:45:54,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:54,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:54,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:54,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:54,764 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 03:45:55,296 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 03:45:55,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 03:45:55,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-11-03 03:45:55,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009777667] [2021-11-03 03:45:55,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:45:55,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:45:55,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:45:55,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-03 03:45:55,299 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:55,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:55,358 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2021-11-03 03:45:55,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 03:45:55,359 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-03 03:45:55,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:55,360 INFO L225 Difference]: With dead ends: 65 [2021-11-03 03:45:55,360 INFO L226 Difference]: Without dead ends: 64 [2021-11-03 03:45:55,360 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-03 03:45:55,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-03 03:45:55,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 35. [2021-11-03 03:45:55,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 34 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:55,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2021-11-03 03:45:55,365 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 9 [2021-11-03 03:45:55,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:55,365 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2021-11-03 03:45:55,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:55,365 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2021-11-03 03:45:55,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 03:45:55,366 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:55,366 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:45:55,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 03:45:55,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:45:55,567 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-03 03:45:55,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:55,567 INFO L85 PathProgramCache]: Analyzing trace with hash -337916730, now seen corresponding path program 1 times [2021-11-03 03:45:55,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:45:55,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57018102] [2021-11-03 03:45:55,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:55,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:45:55,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:55,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 03:45:55,599 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:45:55,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57018102] [2021-11-03 03:45:55,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57018102] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:45:55,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:45:55,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 03:45:55,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502232742] [2021-11-03 03:45:55,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:45:55,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:45:55,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:45:55,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:45:55,601 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:55,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:55,620 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2021-11-03 03:45:55,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:45:55,620 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-03 03:45:55,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:55,622 INFO L225 Difference]: With dead ends: 35 [2021-11-03 03:45:55,622 INFO L226 Difference]: Without dead ends: 33 [2021-11-03 03:45:55,622 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:45:55,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-03 03:45:55,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-11-03 03:45:55,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 32 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:55,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2021-11-03 03:45:55,626 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 9 [2021-11-03 03:45:55,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:55,627 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2021-11-03 03:45:55,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:55,627 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2021-11-03 03:45:55,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-03 03:45:55,628 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:55,628 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:45:55,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-03 03:45:55,628 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-03 03:45:55,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:55,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1885483977, now seen corresponding path program 1 times [2021-11-03 03:45:55,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:45:55,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660964443] [2021-11-03 03:45:55,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:55,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:45:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:55,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 03:45:55,655 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:45:55,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660964443] [2021-11-03 03:45:55,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660964443] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:45:55,656 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:45:55,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 03:45:55,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565978457] [2021-11-03 03:45:55,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:45:55,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:45:55,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:45:55,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:45:55,657 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:55,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:55,675 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2021-11-03 03:45:55,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:45:55,676 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-03 03:45:55,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:55,677 INFO L225 Difference]: With dead ends: 33 [2021-11-03 03:45:55,677 INFO L226 Difference]: Without dead ends: 26 [2021-11-03 03:45:55,677 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:45:55,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-03 03:45:55,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-11-03 03:45:55,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 25 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:55,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2021-11-03 03:45:55,680 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 10 [2021-11-03 03:45:55,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:55,680 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2021-11-03 03:45:55,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:55,681 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2021-11-03 03:45:55,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-03 03:45:55,681 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:55,681 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1] [2021-11-03 03:45:55,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-03 03:45:55,682 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-03 03:45:55,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:55,682 INFO L85 PathProgramCache]: Analyzing trace with hash 489743090, now seen corresponding path program 1 times [2021-11-03 03:45:55,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:45:55,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454230568] [2021-11-03 03:45:55,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:55,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:45:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:55,716 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:55,716 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:45:55,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454230568] [2021-11-03 03:45:55,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454230568] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 03:45:55,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561039127] [2021-11-03 03:45:55,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:55,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:45:55,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:45:55,722 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:45:55,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 03:45:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:55,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:45:55,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:45:55,810 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:55,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:45:55,860 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:55,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561039127] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:45:55,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1315040270] [2021-11-03 03:45:55,864 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-03 03:45:55,864 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 03:45:55,865 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 03:45:55,865 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 03:45:55,865 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 03:45:55,877 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:55,879 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:45:55,879 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:55,880 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 03:45:55,880 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:45:55,881 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:55,881 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 03:45:55,883 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-03 03:45:55,888 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_9|], 10=[|v_#valid_10|]} [2021-11-03 03:45:55,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:55,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-03 03:45:55,896 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:55,896 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:45:55,897 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:55,897 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:45:55,898 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:45:55,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:55,903 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:55,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:55,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:55,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:55,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:55,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 03:45:55,916 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:55,919 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:45:55,920 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:55,920 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:45:55,920 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:45:55,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:55,924 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:55,925 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:55,926 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-03 03:45:55,927 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:45:55,927 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-11-03 03:45:55,932 INFO L180 QuantifierPusher]: treesize reduction 16, result has 84.5 percent of original size [2021-11-03 03:45:55,938 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-03 03:45:55,943 INFO L180 QuantifierPusher]: treesize reduction 8, result has 91.5 percent of original size [2021-11-03 03:45:55,945 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:45:55,949 INFO L180 QuantifierPusher]: treesize reduction 10, result has 89.6 percent of original size [2021-11-03 03:45:55,952 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:45:55,954 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:55,957 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:45:55,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:55,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:55,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:56,010 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.7 percent of original size [2021-11-03 03:45:56,017 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 207 [2021-11-03 03:45:56,022 INFO L180 QuantifierPusher]: treesize reduction 7, result has 96.8 percent of original size [2021-11-03 03:45:56,030 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-11-03 03:45:56,037 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:56,043 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-11-03 03:45:56,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:56,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:56,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:56,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:56,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:56,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:56,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:56,109 INFO L180 QuantifierPusher]: treesize reduction 29, result has 56.1 percent of original size [2021-11-03 03:45:56,111 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:45:56,114 INFO L180 QuantifierPusher]: treesize reduction 3, result has 93.3 percent of original size [2021-11-03 03:45:56,116 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:45:56,119 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:56,122 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:45:56,126 INFO L180 QuantifierPusher]: treesize reduction 29, result has 56.1 percent of original size [2021-11-03 03:45:56,129 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:45:56,133 INFO L180 QuantifierPusher]: treesize reduction 3, result has 93.3 percent of original size [2021-11-03 03:45:56,136 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:45:56,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:56,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:56,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:56,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:56,169 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 03:45:56,688 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 03:45:56,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 03:45:56,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-11-03 03:45:56,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212687619] [2021-11-03 03:45:56,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:45:56,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:45:56,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:45:56,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-03 03:45:56,690 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:56,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:56,712 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2021-11-03 03:45:56,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 03:45:56,712 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-03 03:45:56,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:56,713 INFO L225 Difference]: With dead ends: 30 [2021-11-03 03:45:56,713 INFO L226 Difference]: Without dead ends: 29 [2021-11-03 03:45:56,713 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-03 03:45:56,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-03 03:45:56,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-03 03:45:56,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:56,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-11-03 03:45:56,717 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 12 [2021-11-03 03:45:56,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:56,717 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-11-03 03:45:56,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:56,718 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-11-03 03:45:56,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-03 03:45:56,719 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:56,719 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1] [2021-11-03 03:45:56,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 03:45:56,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:45:56,937 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-03 03:45:56,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:56,937 INFO L85 PathProgramCache]: Analyzing trace with hash -646599436, now seen corresponding path program 2 times [2021-11-03 03:45:56,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:45:56,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941528875] [2021-11-03 03:45:56,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:56,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:45:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:57,014 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:57,014 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:45:57,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941528875] [2021-11-03 03:45:57,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941528875] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 03:45:57,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948433354] [2021-11-03 03:45:57,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 03:45:57,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:45:57,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:45:57,016 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:45:57,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 03:45:57,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-03 03:45:57,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:45:57,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 03:45:57,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:45:57,185 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:57,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:45:57,291 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:57,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948433354] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:45:57,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1538473299] [2021-11-03 03:45:57,294 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-03 03:45:57,294 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 03:45:57,294 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 03:45:57,294 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 03:45:57,294 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 03:45:57,300 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:57,301 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:45:57,302 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:57,303 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 03:45:57,304 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:45:57,304 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:57,305 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 03:45:57,306 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-03 03:45:57,311 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_10|], 10=[|v_#valid_11|]} [2021-11-03 03:45:57,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:57,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-03 03:45:57,320 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:57,320 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:45:57,321 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:57,321 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:45:57,322 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:45:57,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:57,325 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:57,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:57,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:57,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:57,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:57,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 03:45:57,344 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:57,347 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:45:57,347 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:57,348 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:45:57,348 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:45:57,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:57,352 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:57,354 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:57,355 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-03 03:45:57,356 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:45:57,356 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-11-03 03:45:57,362 INFO L180 QuantifierPusher]: treesize reduction 16, result has 84.5 percent of original size [2021-11-03 03:45:57,366 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-03 03:45:57,370 INFO L180 QuantifierPusher]: treesize reduction 8, result has 91.5 percent of original size [2021-11-03 03:45:57,374 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-03 03:45:57,377 INFO L180 QuantifierPusher]: treesize reduction 8, result has 91.5 percent of original size [2021-11-03 03:45:57,380 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:45:57,383 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:57,387 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:45:57,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:57,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:57,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:57,432 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.7 percent of original size [2021-11-03 03:45:57,439 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 207 [2021-11-03 03:45:57,447 INFO L180 QuantifierPusher]: treesize reduction 7, result has 96.8 percent of original size [2021-11-03 03:45:57,454 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-11-03 03:45:57,458 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:57,463 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-11-03 03:45:57,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:57,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:57,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:57,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:57,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:57,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:57,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:57,508 INFO L180 QuantifierPusher]: treesize reduction 29, result has 56.1 percent of original size [2021-11-03 03:45:57,510 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:45:57,511 INFO L180 QuantifierPusher]: treesize reduction 3, result has 93.3 percent of original size [2021-11-03 03:45:57,513 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:45:57,514 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:57,517 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:45:57,521 INFO L180 QuantifierPusher]: treesize reduction 29, result has 56.1 percent of original size [2021-11-03 03:45:57,523 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:45:57,526 INFO L180 QuantifierPusher]: treesize reduction 3, result has 93.3 percent of original size [2021-11-03 03:45:57,529 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:45:57,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:57,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:57,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:57,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:57,567 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 03:45:58,164 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 03:45:58,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 03:45:58,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-11-03 03:45:58,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963610090] [2021-11-03 03:45:58,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 03:45:58,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:45:58,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 03:45:58,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-11-03 03:45:58,166 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 12 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:58,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:58,225 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2021-11-03 03:45:58,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 03:45:58,226 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-03 03:45:58,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:58,227 INFO L225 Difference]: With dead ends: 62 [2021-11-03 03:45:58,227 INFO L226 Difference]: Without dead ends: 61 [2021-11-03 03:45:58,227 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 56 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-11-03 03:45:58,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-03 03:45:58,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2021-11-03 03:45:58,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 54 states have (on average 1.1296296296296295) internal successors, (61), 55 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:58,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2021-11-03 03:45:58,233 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 24 [2021-11-03 03:45:58,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:58,234 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2021-11-03 03:45:58,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:58,234 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2021-11-03 03:45:58,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-03 03:45:58,235 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:58,235 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1] [2021-11-03 03:45:58,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-03 03:45:58,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-11-03 03:45:58,458 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-03 03:45:58,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:58,459 INFO L85 PathProgramCache]: Analyzing trace with hash 84574400, now seen corresponding path program 2 times [2021-11-03 03:45:58,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:45:58,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211294611] [2021-11-03 03:45:58,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:58,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:45:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:58,523 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:58,523 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:45:58,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211294611] [2021-11-03 03:45:58,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211294611] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 03:45:58,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555426533] [2021-11-03 03:45:58,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 03:45:58,524 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:45:58,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:45:58,533 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:45:58,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-03 03:45:58,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-03 03:45:58,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:45:58,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 03:45:58,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:45:58,725 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:58,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:45:58,834 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:58,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555426533] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:45:58,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [109418006] [2021-11-03 03:45:58,839 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-03 03:45:58,839 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 03:45:58,839 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 03:45:58,840 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 03:45:58,840 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 03:45:58,849 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:58,851 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:45:58,852 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:58,853 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 03:45:58,853 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:45:58,854 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:58,854 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 03:45:58,856 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-03 03:45:58,861 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_11|], 10=[|v_#valid_12|]} [2021-11-03 03:45:58,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:58,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-03 03:45:58,869 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:58,870 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:45:58,871 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:58,871 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:45:58,872 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:45:58,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:58,876 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:58,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:58,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:58,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:58,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:58,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 03:45:58,903 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:58,905 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:45:58,906 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:58,906 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:45:58,906 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:45:58,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:58,911 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:58,912 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:58,913 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-03 03:45:58,914 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:45:58,914 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-11-03 03:45:58,919 INFO L180 QuantifierPusher]: treesize reduction 16, result has 84.5 percent of original size [2021-11-03 03:45:58,923 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-03 03:45:58,926 INFO L180 QuantifierPusher]: treesize reduction 8, result has 91.5 percent of original size [2021-11-03 03:45:58,928 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-03 03:45:58,931 INFO L180 QuantifierPusher]: treesize reduction 8, result has 91.5 percent of original size [2021-11-03 03:45:58,933 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:45:58,935 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:58,939 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:45:58,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:58,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:58,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:58,989 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.7 percent of original size [2021-11-03 03:45:58,995 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 207 [2021-11-03 03:45:59,002 INFO L180 QuantifierPusher]: treesize reduction 7, result has 96.8 percent of original size [2021-11-03 03:45:59,010 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-11-03 03:45:59,015 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:59,021 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-11-03 03:45:59,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:59,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:59,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:59,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:59,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:59,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:59,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:59,073 INFO L180 QuantifierPusher]: treesize reduction 29, result has 56.1 percent of original size [2021-11-03 03:45:59,075 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:45:59,077 INFO L180 QuantifierPusher]: treesize reduction 3, result has 93.3 percent of original size [2021-11-03 03:45:59,081 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:45:59,083 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:45:59,086 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:45:59,092 INFO L180 QuantifierPusher]: treesize reduction 29, result has 56.1 percent of original size [2021-11-03 03:45:59,094 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:45:59,098 INFO L180 QuantifierPusher]: treesize reduction 3, result has 93.3 percent of original size [2021-11-03 03:45:59,100 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:45:59,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:59,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:59,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:59,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:45:59,136 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 03:45:59,773 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 03:45:59,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 03:45:59,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-11-03 03:45:59,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988622269] [2021-11-03 03:45:59,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 03:45:59,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:45:59,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 03:45:59,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-11-03 03:45:59,775 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:59,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:59,833 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2021-11-03 03:45:59,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 03:45:59,833 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-03 03:45:59,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:59,834 INFO L225 Difference]: With dead ends: 60 [2021-11-03 03:45:59,834 INFO L226 Difference]: Without dead ends: 59 [2021-11-03 03:45:59,834 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 64 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-11-03 03:45:59,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-03 03:45:59,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-11-03 03:45:59,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 58 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:59,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2021-11-03 03:45:59,840 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 27 [2021-11-03 03:45:59,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:59,841 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2021-11-03 03:45:59,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:59,841 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2021-11-03 03:45:59,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-03 03:45:59,843 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:59,843 INFO L513 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1] [2021-11-03 03:45:59,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-03 03:46:00,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-11-03 03:46:00,044 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-03 03:46:00,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:46:00,044 INFO L85 PathProgramCache]: Analyzing trace with hash -25479372, now seen corresponding path program 3 times [2021-11-03 03:46:00,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:46:00,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574958310] [2021-11-03 03:46:00,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:46:00,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:46:00,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:46:00,202 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:46:00,203 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:46:00,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574958310] [2021-11-03 03:46:00,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574958310] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 03:46:00,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547131707] [2021-11-03 03:46:00,203 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-03 03:46:00,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:46:00,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:46:00,205 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:46:00,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-03 03:46:00,323 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-03 03:46:00,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:46:00,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-03 03:46:00,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:46:00,502 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:46:00,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:46:00,887 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:46:00,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547131707] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:46:00,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [9343205] [2021-11-03 03:46:00,890 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-03 03:46:00,890 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 03:46:00,891 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 03:46:00,891 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 03:46:00,891 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 03:46:00,896 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:00,897 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:46:00,898 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:00,898 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 03:46:00,899 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:46:00,900 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:00,900 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 03:46:00,902 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-03 03:46:00,905 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_12|], 10=[|v_#valid_13|]} [2021-11-03 03:46:00,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:00,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-03 03:46:00,913 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:00,914 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:46:00,914 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:00,915 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:46:00,915 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:46:00,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:00,919 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:00,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:00,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:00,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:00,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:00,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 03:46:00,930 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:00,932 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:46:00,933 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:00,933 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:46:00,933 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:46:00,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:00,936 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:00,938 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:00,939 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-03 03:46:00,939 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:46:00,940 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-11-03 03:46:00,945 INFO L180 QuantifierPusher]: treesize reduction 16, result has 84.5 percent of original size [2021-11-03 03:46:00,950 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-03 03:46:00,956 INFO L180 QuantifierPusher]: treesize reduction 8, result has 91.5 percent of original size [2021-11-03 03:46:00,958 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:46:00,961 INFO L180 QuantifierPusher]: treesize reduction 10, result has 89.6 percent of original size [2021-11-03 03:46:00,965 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:46:00,968 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:00,971 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:46:00,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:00,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:00,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:01,003 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.7 percent of original size [2021-11-03 03:46:01,009 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 207 [2021-11-03 03:46:01,013 INFO L180 QuantifierPusher]: treesize reduction 7, result has 96.8 percent of original size [2021-11-03 03:46:01,018 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-11-03 03:46:01,021 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:01,026 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-11-03 03:46:01,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:01,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:01,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:01,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:01,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:01,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:01,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:01,067 INFO L180 QuantifierPusher]: treesize reduction 29, result has 56.1 percent of original size [2021-11-03 03:46:01,069 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:46:01,071 INFO L180 QuantifierPusher]: treesize reduction 3, result has 93.3 percent of original size [2021-11-03 03:46:01,072 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:46:01,074 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:01,077 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:46:01,081 INFO L180 QuantifierPusher]: treesize reduction 29, result has 56.1 percent of original size [2021-11-03 03:46:01,082 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:46:01,085 INFO L180 QuantifierPusher]: treesize reduction 3, result has 93.3 percent of original size [2021-11-03 03:46:01,088 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:46:01,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:01,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:01,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:01,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:01,116 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 03:46:01,838 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 03:46:01,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 03:46:01,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2021-11-03 03:46:01,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226571014] [2021-11-03 03:46:01,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-03 03:46:01,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:46:01,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-03 03:46:01,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=577, Unknown=0, NotChecked=0, Total=870 [2021-11-03 03:46:01,841 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand has 24 states, 23 states have (on average 4.6521739130434785) internal successors, (107), 24 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:01,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:46:01,944 INFO L93 Difference]: Finished difference Result 128 states and 139 transitions. [2021-11-03 03:46:01,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-03 03:46:01,945 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.6521739130434785) internal successors, (107), 24 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-03 03:46:01,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:46:01,947 INFO L225 Difference]: With dead ends: 128 [2021-11-03 03:46:01,947 INFO L226 Difference]: Without dead ends: 127 [2021-11-03 03:46:01,947 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 134 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=293, Invalid=577, Unknown=0, NotChecked=0, Total=870 [2021-11-03 03:46:01,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-03 03:46:01,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 116. [2021-11-03 03:46:01,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 114 states have (on average 1.1140350877192982) internal successors, (127), 115 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:01,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 127 transitions. [2021-11-03 03:46:01,957 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 127 transitions. Word has length 54 [2021-11-03 03:46:01,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:46:01,958 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 127 transitions. [2021-11-03 03:46:01,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.6521739130434785) internal successors, (107), 24 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:01,958 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 127 transitions. [2021-11-03 03:46:01,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-03 03:46:01,960 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:46:01,960 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 1, 1, 1] [2021-11-03 03:46:01,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-03 03:46:02,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:46:02,177 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-03 03:46:02,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:46:02,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1153289856, now seen corresponding path program 3 times [2021-11-03 03:46:02,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:46:02,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083081913] [2021-11-03 03:46:02,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:46:02,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:46:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:46:02,303 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:46:02,303 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:46:02,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083081913] [2021-11-03 03:46:02,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083081913] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 03:46:02,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076492188] [2021-11-03 03:46:02,304 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-03 03:46:02,304 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:46:02,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:46:02,305 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:46:02,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-03 03:46:02,456 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-03 03:46:02,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:46:02,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-03 03:46:02,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:46:02,658 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:46:02,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:46:03,063 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:46:03,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076492188] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:46:03,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1164819074] [2021-11-03 03:46:03,065 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-03 03:46:03,066 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 03:46:03,066 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 03:46:03,066 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 03:46:03,066 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 03:46:03,073 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:03,073 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:46:03,074 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:03,074 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 03:46:03,075 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:46:03,076 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:03,076 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 03:46:03,077 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-03 03:46:03,080 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 10=[|v_#valid_14|]} [2021-11-03 03:46:03,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:03,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-03 03:46:03,088 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:03,088 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:46:03,089 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:03,089 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:46:03,090 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:46:03,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:03,094 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:03,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:03,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:03,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:03,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:03,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 03:46:03,115 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:03,122 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:46:03,123 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:03,124 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:46:03,124 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:46:03,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:03,128 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:03,129 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:03,131 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-03 03:46:03,131 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:46:03,132 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-11-03 03:46:03,137 INFO L180 QuantifierPusher]: treesize reduction 16, result has 84.5 percent of original size [2021-11-03 03:46:03,141 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-03 03:46:03,144 INFO L180 QuantifierPusher]: treesize reduction 8, result has 91.5 percent of original size [2021-11-03 03:46:03,146 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-03 03:46:03,149 INFO L180 QuantifierPusher]: treesize reduction 8, result has 91.5 percent of original size [2021-11-03 03:46:03,151 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:46:03,153 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:03,159 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:46:03,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:03,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:03,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:03,194 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.7 percent of original size [2021-11-03 03:46:03,199 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 207 [2021-11-03 03:46:03,204 INFO L180 QuantifierPusher]: treesize reduction 7, result has 96.8 percent of original size [2021-11-03 03:46:03,209 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-11-03 03:46:03,214 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:03,219 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-11-03 03:46:03,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:03,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:03,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:03,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:03,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:03,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:03,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:03,262 INFO L180 QuantifierPusher]: treesize reduction 29, result has 56.1 percent of original size [2021-11-03 03:46:03,265 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:46:03,267 INFO L180 QuantifierPusher]: treesize reduction 3, result has 93.3 percent of original size [2021-11-03 03:46:03,268 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:46:03,270 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:03,273 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:46:03,278 INFO L180 QuantifierPusher]: treesize reduction 29, result has 56.1 percent of original size [2021-11-03 03:46:03,279 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:46:03,283 INFO L180 QuantifierPusher]: treesize reduction 3, result has 93.3 percent of original size [2021-11-03 03:46:03,285 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:46:03,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:03,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:03,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:03,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:03,314 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 03:46:04,002 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 03:46:04,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 03:46:04,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2021-11-03 03:46:04,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750856888] [2021-11-03 03:46:04,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-03 03:46:04,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:46:04,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-03 03:46:04,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=577, Unknown=0, NotChecked=0, Total=870 [2021-11-03 03:46:04,005 INFO L87 Difference]: Start difference. First operand 116 states and 127 transitions. Second operand has 24 states, 23 states have (on average 4.913043478260869) internal successors, (113), 24 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:04,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:46:04,094 INFO L93 Difference]: Finished difference Result 120 states and 131 transitions. [2021-11-03 03:46:04,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-03 03:46:04,095 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.913043478260869) internal successors, (113), 24 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-03 03:46:04,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:46:04,096 INFO L225 Difference]: With dead ends: 120 [2021-11-03 03:46:04,096 INFO L226 Difference]: Without dead ends: 119 [2021-11-03 03:46:04,097 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 142 SyntacticMatches, 11 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=293, Invalid=577, Unknown=0, NotChecked=0, Total=870 [2021-11-03 03:46:04,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-03 03:46:04,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-11-03 03:46:04,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 117 states have (on average 1.017094017094017) internal successors, (119), 118 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:04,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2021-11-03 03:46:04,124 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 57 [2021-11-03 03:46:04,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:46:04,124 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2021-11-03 03:46:04,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.913043478260869) internal successors, (113), 24 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:04,125 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2021-11-03 03:46:04,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-03 03:46:04,131 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:46:04,131 INFO L513 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 1, 1, 1] [2021-11-03 03:46:04,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-03 03:46:04,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:46:04,332 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-03 03:46:04,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:46:04,333 INFO L85 PathProgramCache]: Analyzing trace with hash -799540300, now seen corresponding path program 4 times [2021-11-03 03:46:04,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:46:04,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442242338] [2021-11-03 03:46:04,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:46:04,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:46:04,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:46:04,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:46:04,699 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:46:04,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442242338] [2021-11-03 03:46:04,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442242338] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 03:46:04,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914553758] [2021-11-03 03:46:04,699 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-03 03:46:04,700 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:46:04,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:46:04,701 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:46:04,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-03 03:46:04,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:46:04,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-03 03:46:04,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:46:05,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:46:05,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:46:06,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:46:06,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914553758] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:46:06,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [207137941] [2021-11-03 03:46:06,182 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-03 03:46:06,182 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 03:46:06,183 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 03:46:06,183 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 03:46:06,183 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 03:46:06,190 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:06,190 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:46:06,191 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:06,191 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 03:46:06,192 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:46:06,192 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:06,194 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 03:46:06,195 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-03 03:46:06,197 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_14|], 10=[|v_#valid_15|]} [2021-11-03 03:46:06,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:06,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-03 03:46:06,206 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:06,207 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:46:06,212 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:06,213 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:46:06,213 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:46:06,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:06,216 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:06,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:06,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:06,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:06,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:06,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 03:46:06,227 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:06,229 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:46:06,229 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:06,230 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:46:06,230 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:46:06,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:06,233 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:06,234 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:06,235 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-03 03:46:06,235 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:46:06,235 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-11-03 03:46:06,240 INFO L180 QuantifierPusher]: treesize reduction 16, result has 84.5 percent of original size [2021-11-03 03:46:06,243 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-03 03:46:06,246 INFO L180 QuantifierPusher]: treesize reduction 8, result has 91.5 percent of original size [2021-11-03 03:46:06,247 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:46:06,249 INFO L180 QuantifierPusher]: treesize reduction 10, result has 89.6 percent of original size [2021-11-03 03:46:06,251 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:46:06,252 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:06,255 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:46:06,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:06,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:06,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:06,282 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.7 percent of original size [2021-11-03 03:46:06,286 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 207 [2021-11-03 03:46:06,290 INFO L180 QuantifierPusher]: treesize reduction 7, result has 96.8 percent of original size [2021-11-03 03:46:06,294 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-11-03 03:46:06,296 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:06,307 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-11-03 03:46:06,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:06,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:06,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:06,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:06,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:06,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:06,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:06,341 INFO L180 QuantifierPusher]: treesize reduction 29, result has 56.1 percent of original size [2021-11-03 03:46:06,342 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:46:06,347 INFO L180 QuantifierPusher]: treesize reduction 3, result has 93.3 percent of original size [2021-11-03 03:46:06,348 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:46:06,349 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:06,351 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:46:06,357 INFO L180 QuantifierPusher]: treesize reduction 29, result has 56.1 percent of original size [2021-11-03 03:46:06,358 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:46:06,361 INFO L180 QuantifierPusher]: treesize reduction 3, result has 93.3 percent of original size [2021-11-03 03:46:06,372 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:46:06,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:06,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:06,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:06,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:06,395 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 03:46:07,436 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 03:46:07,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 03:46:07,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2021-11-03 03:46:07,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090753402] [2021-11-03 03:46:07,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-03 03:46:07,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:46:07,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-03 03:46:07,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1145, Invalid=1717, Unknown=0, NotChecked=0, Total=2862 [2021-11-03 03:46:07,440 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand has 48 states, 47 states have (on average 4.829787234042553) internal successors, (227), 48 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:07,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:46:07,611 INFO L93 Difference]: Finished difference Result 260 states and 283 transitions. [2021-11-03 03:46:07,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-03 03:46:07,611 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.829787234042553) internal successors, (227), 48 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-03 03:46:07,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:46:07,614 INFO L225 Difference]: With dead ends: 260 [2021-11-03 03:46:07,614 INFO L226 Difference]: Without dead ends: 259 [2021-11-03 03:46:07,618 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 290 SyntacticMatches, 22 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1922 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1145, Invalid=1717, Unknown=0, NotChecked=0, Total=2862 [2021-11-03 03:46:07,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-11-03 03:46:07,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 236. [2021-11-03 03:46:07,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 234 states have (on average 1.106837606837607) internal successors, (259), 235 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:07,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 259 transitions. [2021-11-03 03:46:07,631 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 259 transitions. Word has length 114 [2021-11-03 03:46:07,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:46:07,631 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 259 transitions. [2021-11-03 03:46:07,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.829787234042553) internal successors, (227), 48 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:07,632 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 259 transitions. [2021-11-03 03:46:07,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-03 03:46:07,633 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:46:07,634 INFO L513 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 22, 1, 1, 1] [2021-11-03 03:46:07,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-03 03:46:07,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:46:07,860 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-03 03:46:07,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:46:07,860 INFO L85 PathProgramCache]: Analyzing trace with hash 783596032, now seen corresponding path program 4 times [2021-11-03 03:46:07,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:46:07,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552834339] [2021-11-03 03:46:07,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:46:07,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:46:07,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:46:08,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 0 proven. 1265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:46:08,247 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:46:08,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552834339] [2021-11-03 03:46:08,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552834339] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 03:46:08,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811320561] [2021-11-03 03:46:08,248 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-03 03:46:08,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:46:08,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:46:08,253 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:46:08,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-03 03:46:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:46:08,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-03 03:46:08,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:46:08,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 0 proven. 1265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:46:08,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:46:09,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 0 proven. 1265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:46:09,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811320561] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:46:09,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [912298684] [2021-11-03 03:46:09,966 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-03 03:46:09,966 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 03:46:09,966 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 03:46:09,967 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 03:46:09,967 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 03:46:09,970 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:09,971 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:46:09,972 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:09,972 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 03:46:09,973 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:46:09,973 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:09,974 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 03:46:09,975 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-03 03:46:09,977 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_15|], 10=[|v_#valid_16|]} [2021-11-03 03:46:09,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:09,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-03 03:46:09,985 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:09,986 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:46:09,986 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:09,987 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:46:09,987 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:46:09,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:09,990 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:09,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:09,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:09,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:09,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:10,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 03:46:10,001 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:10,002 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:46:10,003 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:10,003 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:46:10,004 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:46:10,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:10,006 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:10,007 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:10,008 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-03 03:46:10,009 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:46:10,009 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-11-03 03:46:10,014 INFO L180 QuantifierPusher]: treesize reduction 16, result has 84.5 percent of original size [2021-11-03 03:46:10,017 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-03 03:46:10,039 INFO L180 QuantifierPusher]: treesize reduction 8, result has 91.5 percent of original size [2021-11-03 03:46:10,043 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-03 03:46:10,045 INFO L180 QuantifierPusher]: treesize reduction 8, result has 91.5 percent of original size [2021-11-03 03:46:10,046 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:46:10,047 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:10,050 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:46:10,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:10,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:10,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:10,077 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.7 percent of original size [2021-11-03 03:46:10,081 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 207 [2021-11-03 03:46:10,085 INFO L180 QuantifierPusher]: treesize reduction 7, result has 96.8 percent of original size [2021-11-03 03:46:10,089 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-11-03 03:46:10,092 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:10,097 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-11-03 03:46:10,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:10,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:10,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:10,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:10,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:10,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:10,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:10,130 INFO L180 QuantifierPusher]: treesize reduction 29, result has 56.1 percent of original size [2021-11-03 03:46:10,132 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:46:10,134 INFO L180 QuantifierPusher]: treesize reduction 3, result has 93.3 percent of original size [2021-11-03 03:46:10,135 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:46:10,137 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:10,139 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:46:10,144 INFO L180 QuantifierPusher]: treesize reduction 29, result has 56.1 percent of original size [2021-11-03 03:46:10,145 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:46:10,148 INFO L180 QuantifierPusher]: treesize reduction 3, result has 93.3 percent of original size [2021-11-03 03:46:10,149 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:46:10,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:10,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:10,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:10,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:10,173 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 03:46:11,282 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 03:46:11,282 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 03:46:11,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2021-11-03 03:46:11,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750338114] [2021-11-03 03:46:11,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-03 03:46:11,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:46:11,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-03 03:46:11,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1145, Invalid=1717, Unknown=0, NotChecked=0, Total=2862 [2021-11-03 03:46:11,286 INFO L87 Difference]: Start difference. First operand 236 states and 259 transitions. Second operand has 48 states, 47 states have (on average 4.957446808510638) internal successors, (233), 48 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:11,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:46:11,500 INFO L93 Difference]: Finished difference Result 240 states and 263 transitions. [2021-11-03 03:46:11,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-03 03:46:11,501 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.957446808510638) internal successors, (233), 48 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-11-03 03:46:11,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:46:11,502 INFO L225 Difference]: With dead ends: 240 [2021-11-03 03:46:11,503 INFO L226 Difference]: Without dead ends: 239 [2021-11-03 03:46:11,505 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 298 SyntacticMatches, 23 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1968 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1145, Invalid=1717, Unknown=0, NotChecked=0, Total=2862 [2021-11-03 03:46:11,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-03 03:46:11,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2021-11-03 03:46:11,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 237 states have (on average 1.0084388185654007) internal successors, (239), 238 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:11,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2021-11-03 03:46:11,516 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 117 [2021-11-03 03:46:11,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:46:11,518 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2021-11-03 03:46:11,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.957446808510638) internal successors, (233), 48 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:11,518 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2021-11-03 03:46:11,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-03 03:46:11,524 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:46:11,525 INFO L513 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 1, 1, 1] [2021-11-03 03:46:11,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-03 03:46:11,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2021-11-03 03:46:11,741 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-03 03:46:11,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:46:11,741 INFO L85 PathProgramCache]: Analyzing trace with hash 474498228, now seen corresponding path program 5 times [2021-11-03 03:46:11,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:46:11,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749772836] [2021-11-03 03:46:11,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:46:11,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:46:11,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:46:13,070 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:46:13,070 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:46:13,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749772836] [2021-11-03 03:46:13,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749772836] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 03:46:13,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501850982] [2021-11-03 03:46:13,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 03:46:13,071 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:46:13,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:46:13,073 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:46:13,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-03 03:46:13,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2021-11-03 03:46:13,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:46:13,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-03 03:46:13,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:46:14,361 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:46:14,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:46:17,219 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:46:17,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501850982] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:46:17,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [834447480] [2021-11-03 03:46:17,221 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-03 03:46:17,221 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 03:46:17,221 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 03:46:17,221 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 03:46:17,221 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 03:46:17,226 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:17,226 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:46:17,227 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:17,227 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 03:46:17,228 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:46:17,228 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:17,228 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 03:46:17,229 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-03 03:46:17,231 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_16|], 10=[|v_#valid_17|]} [2021-11-03 03:46:17,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:17,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-03 03:46:17,236 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:17,237 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:46:17,237 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:17,237 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:46:17,237 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:46:17,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:17,244 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:17,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:17,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:17,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:17,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:17,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 03:46:17,255 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:17,256 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:46:17,257 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:17,257 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:46:17,257 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:46:17,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:17,267 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:17,268 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:17,269 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-03 03:46:17,270 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:46:17,270 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-11-03 03:46:17,275 INFO L180 QuantifierPusher]: treesize reduction 16, result has 84.5 percent of original size [2021-11-03 03:46:17,282 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-03 03:46:17,285 INFO L180 QuantifierPusher]: treesize reduction 8, result has 91.5 percent of original size [2021-11-03 03:46:17,286 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:46:17,288 INFO L180 QuantifierPusher]: treesize reduction 10, result has 89.6 percent of original size [2021-11-03 03:46:17,290 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:46:17,291 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:17,294 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:46:17,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:17,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:17,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:17,369 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.7 percent of original size [2021-11-03 03:46:17,374 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 207 [2021-11-03 03:46:17,378 INFO L180 QuantifierPusher]: treesize reduction 7, result has 96.8 percent of original size [2021-11-03 03:46:17,397 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-11-03 03:46:17,399 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:17,403 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-11-03 03:46:17,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:17,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:17,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:17,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:17,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:17,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:17,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:17,460 INFO L180 QuantifierPusher]: treesize reduction 29, result has 56.1 percent of original size [2021-11-03 03:46:17,462 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:46:17,463 INFO L180 QuantifierPusher]: treesize reduction 3, result has 93.3 percent of original size [2021-11-03 03:46:17,465 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:46:17,466 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:17,468 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:46:17,472 INFO L180 QuantifierPusher]: treesize reduction 29, result has 56.1 percent of original size [2021-11-03 03:46:17,474 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:46:17,477 INFO L180 QuantifierPusher]: treesize reduction 3, result has 93.3 percent of original size [2021-11-03 03:46:17,480 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:46:17,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:17,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:17,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:17,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:17,511 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 03:46:19,878 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 03:46:19,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 03:46:19,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2021-11-03 03:46:19,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945000631] [2021-11-03 03:46:19,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-11-03 03:46:19,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:46:19,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-11-03 03:46:19,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4577, Invalid=5725, Unknown=0, NotChecked=0, Total=10302 [2021-11-03 03:46:19,888 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand has 96 states, 95 states have (on average 4.91578947368421) internal successors, (467), 96 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:20,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:46:20,481 INFO L93 Difference]: Finished difference Result 524 states and 571 transitions. [2021-11-03 03:46:20,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-11-03 03:46:20,481 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 4.91578947368421) internal successors, (467), 96 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 234 [2021-11-03 03:46:20,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:46:20,485 INFO L225 Difference]: With dead ends: 524 [2021-11-03 03:46:20,485 INFO L226 Difference]: Without dead ends: 523 [2021-11-03 03:46:20,490 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 748 GetRequests, 602 SyntacticMatches, 46 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7322 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=4577, Invalid=5725, Unknown=0, NotChecked=0, Total=10302 [2021-11-03 03:46:20,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2021-11-03 03:46:20,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 476. [2021-11-03 03:46:20,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 474 states have (on average 1.1033755274261603) internal successors, (523), 475 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:20,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 523 transitions. [2021-11-03 03:46:20,510 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 523 transitions. Word has length 234 [2021-11-03 03:46:20,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:46:20,511 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 523 transitions. [2021-11-03 03:46:20,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 4.91578947368421) internal successors, (467), 96 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:20,512 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 523 transitions. [2021-11-03 03:46:20,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-03 03:46:20,515 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:46:20,515 INFO L513 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 46, 1, 1, 1] [2021-11-03 03:46:20,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-03 03:46:20,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2021-11-03 03:46:20,741 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-03 03:46:20,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:46:20,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1039388928, now seen corresponding path program 5 times [2021-11-03 03:46:20,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:46:20,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185695139] [2021-11-03 03:46:20,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:46:20,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:46:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:46:21,780 INFO L134 CoverageAnalysis]: Checked inductivity of 5405 backedges. 0 proven. 5405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:46:21,781 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:46:21,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185695139] [2021-11-03 03:46:21,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185695139] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 03:46:21,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129570529] [2021-11-03 03:46:21,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 03:46:21,781 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:46:21,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:46:21,782 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:46:21,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-03 03:46:22,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2021-11-03 03:46:22,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:46:22,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-03 03:46:22,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:46:23,264 INFO L134 CoverageAnalysis]: Checked inductivity of 5405 backedges. 0 proven. 5405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:46:23,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:46:26,121 INFO L134 CoverageAnalysis]: Checked inductivity of 5405 backedges. 0 proven. 5405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:46:26,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129570529] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:46:26,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2035594773] [2021-11-03 03:46:26,123 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-03 03:46:26,123 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 03:46:26,123 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 03:46:26,123 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 03:46:26,123 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 03:46:26,127 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:26,128 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:46:26,128 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:26,130 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 03:46:26,130 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:46:26,130 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:26,131 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 03:46:26,131 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-03 03:46:26,139 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_17|], 10=[|v_#valid_18|]} [2021-11-03 03:46:26,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:26,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-03 03:46:26,157 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:26,158 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:46:26,158 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:26,158 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:46:26,159 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:46:26,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:26,162 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:26,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:26,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:26,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:26,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:26,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 03:46:26,171 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:26,172 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:46:26,173 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:26,173 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:46:26,173 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:46:26,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:26,176 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:26,180 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:26,181 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-03 03:46:26,182 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:46:26,182 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-11-03 03:46:26,186 INFO L180 QuantifierPusher]: treesize reduction 16, result has 84.5 percent of original size [2021-11-03 03:46:26,189 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-03 03:46:26,192 INFO L180 QuantifierPusher]: treesize reduction 8, result has 91.5 percent of original size [2021-11-03 03:46:26,193 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:46:26,195 INFO L180 QuantifierPusher]: treesize reduction 10, result has 89.6 percent of original size [2021-11-03 03:46:26,196 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:46:26,198 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:26,200 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:46:26,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:26,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:26,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:26,234 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.7 percent of original size [2021-11-03 03:46:26,237 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 207 [2021-11-03 03:46:26,241 INFO L180 QuantifierPusher]: treesize reduction 7, result has 96.8 percent of original size [2021-11-03 03:46:26,244 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-11-03 03:46:26,247 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:26,250 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-11-03 03:46:26,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:26,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:26,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:26,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:26,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:26,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:26,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:26,307 INFO L180 QuantifierPusher]: treesize reduction 29, result has 56.1 percent of original size [2021-11-03 03:46:26,309 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:46:26,310 INFO L180 QuantifierPusher]: treesize reduction 3, result has 93.3 percent of original size [2021-11-03 03:46:26,311 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:46:26,312 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:26,314 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:46:26,318 INFO L180 QuantifierPusher]: treesize reduction 29, result has 56.1 percent of original size [2021-11-03 03:46:26,319 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:46:26,322 INFO L180 QuantifierPusher]: treesize reduction 3, result has 93.3 percent of original size [2021-11-03 03:46:26,323 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:46:26,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:26,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:26,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:26,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:26,345 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 03:46:28,573 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 03:46:28,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 03:46:28,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2021-11-03 03:46:28,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35500633] [2021-11-03 03:46:28,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-11-03 03:46:28,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:46:28,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-11-03 03:46:28,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4577, Invalid=5725, Unknown=0, NotChecked=0, Total=10302 [2021-11-03 03:46:28,580 INFO L87 Difference]: Start difference. First operand 476 states and 523 transitions. Second operand has 96 states, 95 states have (on average 4.978947368421053) internal successors, (473), 96 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:28,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:46:28,999 INFO L93 Difference]: Finished difference Result 480 states and 527 transitions. [2021-11-03 03:46:28,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-11-03 03:46:29,000 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 4.978947368421053) internal successors, (473), 96 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2021-11-03 03:46:29,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:46:29,003 INFO L225 Difference]: With dead ends: 480 [2021-11-03 03:46:29,003 INFO L226 Difference]: Without dead ends: 479 [2021-11-03 03:46:29,007 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 757 GetRequests, 610 SyntacticMatches, 47 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7416 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=4577, Invalid=5725, Unknown=0, NotChecked=0, Total=10302 [2021-11-03 03:46:29,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2021-11-03 03:46:29,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2021-11-03 03:46:29,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 477 states have (on average 1.0041928721174005) internal successors, (479), 478 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:29,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 479 transitions. [2021-11-03 03:46:29,026 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 479 transitions. Word has length 237 [2021-11-03 03:46:29,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:46:29,027 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 479 transitions. [2021-11-03 03:46:29,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 4.978947368421053) internal successors, (473), 96 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:29,028 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 479 transitions. [2021-11-03 03:46:29,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2021-11-03 03:46:29,038 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:46:29,039 INFO L513 BasicCegarLoop]: trace histogram [95, 94, 94, 94, 94, 1, 1, 1] [2021-11-03 03:46:29,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-03 03:46:29,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable161 [2021-11-03 03:46:29,261 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-03 03:46:29,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:46:29,261 INFO L85 PathProgramCache]: Analyzing trace with hash 612619956, now seen corresponding path program 6 times [2021-11-03 03:46:29,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:46:29,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841537586] [2021-11-03 03:46:29,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:46:29,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:46:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:46:32,975 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:46:32,975 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:46:32,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841537586] [2021-11-03 03:46:32,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841537586] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 03:46:32,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266216064] [2021-11-03 03:46:32,976 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-03 03:46:32,976 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:46:32,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:46:32,979 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:46:32,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-03 03:46:33,654 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-03 03:46:33,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:46:33,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 96 conjunts are in the unsatisfiable core [2021-11-03 03:46:33,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:46:34,914 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:46:34,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:46:45,082 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:46:45,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266216064] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:46:45,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1248527802] [2021-11-03 03:46:45,085 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-03 03:46:45,085 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 03:46:45,085 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 03:46:45,086 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 03:46:45,086 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 03:46:45,106 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:45,107 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:46:45,107 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:45,108 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 03:46:45,108 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:46:45,109 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:45,109 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 03:46:45,110 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-03 03:46:45,112 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_18|], 10=[|v_#valid_19|]} [2021-11-03 03:46:45,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:45,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-03 03:46:45,120 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:45,120 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:46:45,121 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:45,121 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:46:45,121 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:46:45,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:45,124 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:45,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:45,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:45,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:45,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:46:45,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 03:46:45,136 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:45,138 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:46:45,138 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:45,139 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:46:45,139 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:46:45,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:45,142 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:45,144 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:45,145 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-03 03:46:45,145 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:46:45,145 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-11-03 03:46:45,151 INFO L180 QuantifierPusher]: treesize reduction 16, result has 84.5 percent of original size [2021-11-03 03:46:45,154 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-03 03:46:45,157 INFO L180 QuantifierPusher]: treesize reduction 8, result has 91.5 percent of original size [2021-11-03 03:46:45,158 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:46:45,161 INFO L180 QuantifierPusher]: treesize reduction 10, result has 89.6 percent of original size [2021-11-03 03:46:45,162 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:46:45,164 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:45,167 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:46:45,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:45,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:45,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:45,198 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.7 percent of original size [2021-11-03 03:46:45,202 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 207 [2021-11-03 03:46:45,206 INFO L180 QuantifierPusher]: treesize reduction 7, result has 96.8 percent of original size [2021-11-03 03:46:45,210 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-11-03 03:46:45,213 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:45,217 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-11-03 03:46:45,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:45,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:45,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:45,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:45,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:45,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:45,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:45,247 INFO L180 QuantifierPusher]: treesize reduction 29, result has 56.1 percent of original size [2021-11-03 03:46:45,248 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:46:45,250 INFO L180 QuantifierPusher]: treesize reduction 3, result has 93.3 percent of original size [2021-11-03 03:46:45,251 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:46:45,252 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:46:45,256 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:46:45,262 INFO L180 QuantifierPusher]: treesize reduction 29, result has 56.1 percent of original size [2021-11-03 03:46:45,264 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:46:45,267 INFO L180 QuantifierPusher]: treesize reduction 3, result has 93.3 percent of original size [2021-11-03 03:46:45,268 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:46:45,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:45,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:45,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:45,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:46:45,290 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 03:46:51,434 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 03:46:51,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 03:46:51,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2021-11-03 03:46:51,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186186865] [2021-11-03 03:46:51,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-11-03 03:46:51,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:46:51,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-11-03 03:46:51,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18353, Invalid=20653, Unknown=0, NotChecked=0, Total=39006 [2021-11-03 03:46:51,455 INFO L87 Difference]: Start difference. First operand 479 states and 479 transitions. Second operand has 192 states, 191 states have (on average 4.958115183246074) internal successors, (947), 192 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:53,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:46:53,306 INFO L93 Difference]: Finished difference Result 1052 states and 1147 transitions. [2021-11-03 03:46:53,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-11-03 03:46:53,307 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 4.958115183246074) internal successors, (947), 192 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 474 [2021-11-03 03:46:53,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:46:53,313 INFO L225 Difference]: With dead ends: 1052 [2021-11-03 03:46:53,314 INFO L226 Difference]: Without dead ends: 1051 [2021-11-03 03:46:53,319 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1516 GetRequests, 1226 SyntacticMatches, 94 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28490 ImplicationChecksByTransitivity, 18.1s TimeCoverageRelationStatistics Valid=18353, Invalid=20653, Unknown=0, NotChecked=0, Total=39006 [2021-11-03 03:46:53,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2021-11-03 03:46:53,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 956. [2021-11-03 03:46:53,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 954 states have (on average 1.10167714884696) internal successors, (1051), 955 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:53,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1051 transitions. [2021-11-03 03:46:53,354 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1051 transitions. Word has length 474 [2021-11-03 03:46:53,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:46:53,355 INFO L470 AbstractCegarLoop]: Abstraction has 956 states and 1051 transitions. [2021-11-03 03:46:53,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 4.958115183246074) internal successors, (947), 192 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:46:53,355 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1051 transitions. [2021-11-03 03:46:53,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2021-11-03 03:46:53,366 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:46:53,367 INFO L513 BasicCegarLoop]: trace histogram [95, 95, 95, 95, 94, 1, 1, 1] [2021-11-03 03:46:53,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-03 03:46:53,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable178 [2021-11-03 03:46:53,584 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-03 03:46:53,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:46:53,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1245118208, now seen corresponding path program 6 times [2021-11-03 03:46:53,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:46:53,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038963762] [2021-11-03 03:46:53,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:46:53,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:46:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:46:57,234 INFO L134 CoverageAnalysis]: Checked inductivity of 22325 backedges. 0 proven. 22325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:46:57,234 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:46:57,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038963762] [2021-11-03 03:46:57,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038963762] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 03:46:57,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952412679] [2021-11-03 03:46:57,235 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-03 03:46:57,235 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:46:57,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:46:57,257 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:46:57,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-03 03:46:58,234 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-03 03:46:58,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:46:58,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 96 conjunts are in the unsatisfiable core [2021-11-03 03:46:58,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:46:59,546 INFO L134 CoverageAnalysis]: Checked inductivity of 22325 backedges. 0 proven. 22325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:46:59,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:47:10,187 INFO L134 CoverageAnalysis]: Checked inductivity of 22325 backedges. 0 proven. 22325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:47:10,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952412679] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:47:10,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1676289879] [2021-11-03 03:47:10,190 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-03 03:47:10,190 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 03:47:10,191 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 03:47:10,191 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 03:47:10,191 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 03:47:10,206 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:47:10,207 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:47:10,207 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:47:10,208 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 03:47:10,208 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:47:10,209 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:47:10,209 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 03:47:10,211 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-03 03:47:10,213 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_19|], 10=[|v_#valid_20|]} [2021-11-03 03:47:10,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:10,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-03 03:47:10,221 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:47:10,221 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:47:10,222 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:47:10,222 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:47:10,222 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:47:10,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:47:10,225 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:47:10,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:10,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:10,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:10,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:10,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 03:47:10,237 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:47:10,239 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:47:10,241 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:47:10,242 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:47:10,242 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:47:10,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:47:10,245 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:47:10,246 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:47:10,247 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-03 03:47:10,247 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:47:10,248 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-11-03 03:47:10,257 INFO L180 QuantifierPusher]: treesize reduction 16, result has 84.5 percent of original size [2021-11-03 03:47:10,260 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-03 03:47:10,262 INFO L180 QuantifierPusher]: treesize reduction 8, result has 91.5 percent of original size [2021-11-03 03:47:10,263 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:47:10,266 INFO L180 QuantifierPusher]: treesize reduction 10, result has 89.6 percent of original size [2021-11-03 03:47:10,267 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:47:10,268 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:47:10,271 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:47:10,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:47:10,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:47:10,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:47:10,294 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.7 percent of original size [2021-11-03 03:47:10,298 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 207 [2021-11-03 03:47:10,303 INFO L180 QuantifierPusher]: treesize reduction 7, result has 96.8 percent of original size [2021-11-03 03:47:10,313 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-11-03 03:47:10,316 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:47:10,320 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-11-03 03:47:10,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:47:10,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:47:10,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:47:10,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:47:10,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:47:10,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:47:10,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:47:10,355 INFO L180 QuantifierPusher]: treesize reduction 29, result has 56.1 percent of original size [2021-11-03 03:47:10,357 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:47:10,358 INFO L180 QuantifierPusher]: treesize reduction 3, result has 93.3 percent of original size [2021-11-03 03:47:10,360 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:47:10,361 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:47:10,363 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:47:10,368 INFO L180 QuantifierPusher]: treesize reduction 29, result has 56.1 percent of original size [2021-11-03 03:47:10,369 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:47:10,372 INFO L180 QuantifierPusher]: treesize reduction 3, result has 93.3 percent of original size [2021-11-03 03:47:10,373 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:47:10,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:47:10,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:47:10,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:47:10,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:47:10,393 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 03:47:16,472 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 03:47:16,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 03:47:16,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2021-11-03 03:47:16,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471665640] [2021-11-03 03:47:16,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-11-03 03:47:16,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:47:16,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-11-03 03:47:16,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18353, Invalid=20653, Unknown=0, NotChecked=0, Total=39006 [2021-11-03 03:47:16,483 INFO L87 Difference]: Start difference. First operand 956 states and 1051 transitions. Second operand has 192 states, 191 states have (on average 4.989528795811518) internal successors, (953), 192 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:18,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:47:18,056 INFO L93 Difference]: Finished difference Result 960 states and 1055 transitions. [2021-11-03 03:47:18,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-11-03 03:47:18,058 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 4.989528795811518) internal successors, (953), 192 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 477 [2021-11-03 03:47:18,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:47:18,064 INFO L225 Difference]: With dead ends: 960 [2021-11-03 03:47:18,064 INFO L226 Difference]: Without dead ends: 959 [2021-11-03 03:47:18,067 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1525 GetRequests, 1234 SyntacticMatches, 95 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28680 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=18353, Invalid=20653, Unknown=0, NotChecked=0, Total=39006 [2021-11-03 03:47:18,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2021-11-03 03:47:18,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 959. [2021-11-03 03:47:18,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 957 states have (on average 1.0020898641588296) internal successors, (959), 958 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:18,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 959 transitions. [2021-11-03 03:47:18,102 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 959 transitions. Word has length 477 [2021-11-03 03:47:18,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:47:18,103 INFO L470 AbstractCegarLoop]: Abstraction has 959 states and 959 transitions. [2021-11-03 03:47:18,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 4.989528795811518) internal successors, (953), 192 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:18,104 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 959 transitions. [2021-11-03 03:47:18,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 955 [2021-11-03 03:47:18,112 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:47:18,113 INFO L513 BasicCegarLoop]: trace histogram [191, 190, 190, 190, 190, 1, 1, 1] [2021-11-03 03:47:18,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-03 03:47:18,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:47:18,313 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-03 03:47:18,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:47:18,314 INFO L85 PathProgramCache]: Analyzing trace with hash -228132172, now seen corresponding path program 7 times [2021-11-03 03:47:18,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:47:18,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634667607] [2021-11-03 03:47:18,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:47:18,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:47:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:47:31,942 INFO L134 CoverageAnalysis]: Checked inductivity of 90155 backedges. 0 proven. 90155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:47:31,942 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:47:31,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634667607] [2021-11-03 03:47:31,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634667607] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 03:47:31,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150796866] [2021-11-03 03:47:31,942 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-03 03:47:31,943 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:47:31,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:47:31,944 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:47:31,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-03 03:47:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:47:33,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 1745 conjuncts, 192 conjunts are in the unsatisfiable core [2021-11-03 03:47:33,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:47:35,875 INFO L134 CoverageAnalysis]: Checked inductivity of 90155 backedges. 0 proven. 90155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:47:35,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:48:13,454 INFO L134 CoverageAnalysis]: Checked inductivity of 90155 backedges. 0 proven. 90155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:13,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150796866] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:48:13,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [901499405] [2021-11-03 03:48:13,456 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-03 03:48:13,457 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 03:48:13,457 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 03:48:13,457 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 03:48:13,457 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 03:48:13,474 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:13,474 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:48:13,475 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:13,475 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 03:48:13,476 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:48:13,476 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:13,477 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 03:48:13,477 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-03 03:48:13,479 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_20|], 10=[|v_#valid_21|]} [2021-11-03 03:48:13,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:13,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-03 03:48:13,487 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:13,487 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:48:13,490 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:13,490 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:48:13,490 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:48:13,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:13,493 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:13,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:13,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:13,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:13,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:13,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 03:48:13,507 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:13,514 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:48:13,515 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:13,515 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:48:13,515 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:48:13,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:13,521 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:13,523 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:13,524 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-03 03:48:13,524 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:48:13,524 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-11-03 03:48:13,529 INFO L180 QuantifierPusher]: treesize reduction 16, result has 84.5 percent of original size [2021-11-03 03:48:13,539 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-03 03:48:13,541 INFO L180 QuantifierPusher]: treesize reduction 8, result has 91.5 percent of original size [2021-11-03 03:48:13,542 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:48:13,544 INFO L180 QuantifierPusher]: treesize reduction 10, result has 89.6 percent of original size [2021-11-03 03:48:13,546 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:48:13,547 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:13,550 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:48:13,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:13,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:13,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:13,575 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.7 percent of original size [2021-11-03 03:48:13,579 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 207 [2021-11-03 03:48:13,583 INFO L180 QuantifierPusher]: treesize reduction 7, result has 96.8 percent of original size [2021-11-03 03:48:13,587 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-11-03 03:48:13,592 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:13,596 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-11-03 03:48:13,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:13,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:13,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:13,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:13,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:13,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:13,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:13,645 INFO L180 QuantifierPusher]: treesize reduction 29, result has 56.1 percent of original size [2021-11-03 03:48:13,646 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:48:13,647 INFO L180 QuantifierPusher]: treesize reduction 3, result has 93.3 percent of original size [2021-11-03 03:48:13,652 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:48:13,653 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:48:13,655 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:48:13,661 INFO L180 QuantifierPusher]: treesize reduction 29, result has 56.1 percent of original size [2021-11-03 03:48:13,662 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:48:13,665 INFO L180 QuantifierPusher]: treesize reduction 3, result has 93.3 percent of original size [2021-11-03 03:48:13,669 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:48:13,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:13,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:13,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:13,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:48:13,690 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 03:48:35,177 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 03:48:35,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 03:48:35,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 383 [2021-11-03 03:48:35,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951737991] [2021-11-03 03:48:35,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2021-11-03 03:48:35,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:48:35,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2021-11-03 03:48:35,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73553, Invalid=78157, Unknown=0, NotChecked=0, Total=151710 [2021-11-03 03:48:35,201 INFO L87 Difference]: Start difference. First operand 959 states and 959 transitions. Second operand has 384 states, 383 states have (on average 4.97911227154047) internal successors, (1907), 384 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:49,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:48:49,528 INFO L93 Difference]: Finished difference Result 2108 states and 2299 transitions. [2021-11-03 03:48:49,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2021-11-03 03:48:49,530 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 4.97911227154047) internal successors, (1907), 384 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 954 [2021-11-03 03:48:49,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:48:49,545 INFO L225 Difference]: With dead ends: 2108 [2021-11-03 03:48:49,545 INFO L226 Difference]: Without dead ends: 2107 [2021-11-03 03:48:49,560 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3052 GetRequests, 2474 SyntacticMatches, 190 SemanticMatches, 388 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112298 ImplicationChecksByTransitivity, 68.8s TimeCoverageRelationStatistics Valid=73553, Invalid=78157, Unknown=0, NotChecked=0, Total=151710 [2021-11-03 03:48:49,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2107 states. [2021-11-03 03:48:49,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2107 to 1916. [2021-11-03 03:48:49,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1916 states, 1914 states have (on average 1.100835945663532) internal successors, (2107), 1915 states have internal predecessors, (2107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:49,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2107 transitions. [2021-11-03 03:48:49,632 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2107 transitions. Word has length 954 [2021-11-03 03:48:49,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:48:49,634 INFO L470 AbstractCegarLoop]: Abstraction has 1916 states and 2107 transitions. [2021-11-03 03:48:49,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 4.97911227154047) internal successors, (1907), 384 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:49,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2107 transitions. [2021-11-03 03:48:49,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 958 [2021-11-03 03:48:49,646 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:48:49,647 INFO L513 BasicCegarLoop]: trace histogram [191, 191, 191, 191, 190, 1, 1, 1] [2021-11-03 03:48:49,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-03 03:48:49,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable212 [2021-11-03 03:48:49,861 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-03 03:48:49,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:48:49,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1647224064, now seen corresponding path program 7 times [2021-11-03 03:48:49,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:48:49,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031681426] [2021-11-03 03:48:49,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:48:49,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:48:50,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:49:05,725 INFO L134 CoverageAnalysis]: Checked inductivity of 90725 backedges. 0 proven. 90725 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:49:05,726 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:49:05,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031681426] [2021-11-03 03:49:05,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031681426] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 03:49:05,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178290072] [2021-11-03 03:49:05,726 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-03 03:49:05,726 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:49:05,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:49:05,727 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:49:05,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-03 03:49:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:49:07,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 1750 conjuncts, 192 conjunts are in the unsatisfiable core [2021-11-03 03:49:07,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:49:10,786 INFO L134 CoverageAnalysis]: Checked inductivity of 90725 backedges. 0 proven. 90725 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:49:10,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:49:54,195 INFO L134 CoverageAnalysis]: Checked inductivity of 90725 backedges. 0 proven. 90725 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:49:54,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178290072] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:49:54,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1374174654] [2021-11-03 03:49:54,197 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-03 03:49:54,198 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 03:49:54,198 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 03:49:54,198 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 03:49:54,198 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 03:49:54,206 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:54,206 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:49:54,206 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:54,207 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 03:49:54,207 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:49:54,207 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:54,207 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 03:49:54,208 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-03 03:49:54,209 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_21|], 10=[|v_#valid_22|]} [2021-11-03 03:49:54,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:54,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-03 03:49:54,218 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:54,219 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:49:54,219 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:54,219 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:49:54,220 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:49:54,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:49:54,221 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:54,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:54,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:54,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:54,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:54,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 03:49:54,229 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:54,230 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:49:54,231 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:54,231 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:49:54,231 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:49:54,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:49:54,233 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:54,233 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:54,234 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-03 03:49:54,234 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:49:54,234 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-11-03 03:49:54,238 INFO L180 QuantifierPusher]: treesize reduction 16, result has 84.5 percent of original size [2021-11-03 03:49:54,240 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-03 03:49:54,241 INFO L180 QuantifierPusher]: treesize reduction 8, result has 91.5 percent of original size [2021-11-03 03:49:54,242 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:49:54,243 INFO L180 QuantifierPusher]: treesize reduction 10, result has 89.6 percent of original size [2021-11-03 03:49:54,244 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:49:54,245 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:54,247 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:49:54,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:49:54,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:49:54,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:49:54,263 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.7 percent of original size [2021-11-03 03:49:54,275 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 207 [2021-11-03 03:49:54,279 INFO L180 QuantifierPusher]: treesize reduction 7, result has 96.8 percent of original size [2021-11-03 03:49:54,282 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-11-03 03:49:54,286 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:54,290 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-11-03 03:49:54,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:49:54,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:49:54,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:49:54,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:49:54,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:49:54,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:49:54,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:49:54,314 INFO L180 QuantifierPusher]: treesize reduction 29, result has 56.1 percent of original size [2021-11-03 03:49:54,314 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:49:54,315 INFO L180 QuantifierPusher]: treesize reduction 3, result has 93.3 percent of original size [2021-11-03 03:49:54,316 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:49:54,317 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:54,319 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:49:54,324 INFO L180 QuantifierPusher]: treesize reduction 29, result has 56.1 percent of original size [2021-11-03 03:49:54,325 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:49:54,327 INFO L180 QuantifierPusher]: treesize reduction 3, result has 93.3 percent of original size [2021-11-03 03:49:54,328 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:49:54,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:49:54,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:49:54,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:49:54,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:49:54,347 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 03:50:14,408 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 03:50:14,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 03:50:14,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 383 [2021-11-03 03:50:14,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874215416] [2021-11-03 03:50:14,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2021-11-03 03:50:14,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:50:14,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2021-11-03 03:50:14,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73553, Invalid=78157, Unknown=0, NotChecked=0, Total=151710 [2021-11-03 03:50:14,431 INFO L87 Difference]: Start difference. First operand 1916 states and 2107 transitions. Second operand has 384 states, 383 states have (on average 4.994778067885117) internal successors, (1913), 384 states have internal predecessors, (1913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:50:23,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:50:23,032 INFO L93 Difference]: Finished difference Result 1920 states and 2111 transitions. [2021-11-03 03:50:23,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2021-11-03 03:50:23,036 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 4.994778067885117) internal successors, (1913), 384 states have internal predecessors, (1913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 957 [2021-11-03 03:50:23,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:50:23,048 INFO L225 Difference]: With dead ends: 1920 [2021-11-03 03:50:23,049 INFO L226 Difference]: Without dead ends: 1919 [2021-11-03 03:50:23,060 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3061 GetRequests, 2482 SyntacticMatches, 191 SemanticMatches, 388 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112680 ImplicationChecksByTransitivity, 75.2s TimeCoverageRelationStatistics Valid=73553, Invalid=78157, Unknown=0, NotChecked=0, Total=151710 [2021-11-03 03:50:23,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2021-11-03 03:50:23,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 1919. [2021-11-03 03:50:23,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1919 states, 1917 states have (on average 1.0010432968179448) internal successors, (1919), 1918 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:50:23,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1919 states to 1919 states and 1919 transitions. [2021-11-03 03:50:23,120 INFO L78 Accepts]: Start accepts. Automaton has 1919 states and 1919 transitions. Word has length 957 [2021-11-03 03:50:23,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:50:23,121 INFO L470 AbstractCegarLoop]: Abstraction has 1919 states and 1919 transitions. [2021-11-03 03:50:23,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 4.994778067885117) internal successors, (1913), 384 states have internal predecessors, (1913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:50:23,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1919 states and 1919 transitions. [2021-11-03 03:50:23,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1915 [2021-11-03 03:50:23,151 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:50:23,152 INFO L513 BasicCegarLoop]: trace histogram [383, 382, 382, 382, 382, 1, 1, 1] [2021-11-03 03:50:23,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-03 03:50:23,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:50:23,377 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-03 03:50:23,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:50:23,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1675444916, now seen corresponding path program 8 times [2021-11-03 03:50:23,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:50:23,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982575512] [2021-11-03 03:50:23,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:50:23,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:50:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:51:14,240 INFO L134 CoverageAnalysis]: Checked inductivity of 364619 backedges. 0 proven. 364619 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:51:14,240 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:51:14,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982575512] [2021-11-03 03:51:14,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982575512] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 03:51:14,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199999686] [2021-11-03 03:51:14,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 03:51:14,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:51:14,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:51:14,241 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:51:14,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6610d303-28eb-408f-a601-fe24a313cdc5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-03 03:54:50,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 383 check-sat command(s) [2021-11-03 03:54:50,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:54:50,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 3473 conjuncts, 384 conjunts are in the unsatisfiable core [2021-11-03 03:54:50,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:54:55,538 INFO L134 CoverageAnalysis]: Checked inductivity of 364619 backedges. 0 proven. 364619 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:55,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:57:22,996 INFO L134 CoverageAnalysis]: Checked inductivity of 364619 backedges. 0 proven. 364619 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:57:22,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199999686] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:57:22,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1868797865] [2021-11-03 03:57:22,999 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-03 03:57:22,999 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 03:57:23,000 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 03:57:23,000 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 03:57:23,000 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 03:57:23,010 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:57:23,011 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:57:23,011 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:57:23,011 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 03:57:23,012 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:57:23,012 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:57:23,012 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 03:57:23,013 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-03 03:57:23,015 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_22|], 10=[|v_#valid_23|]} [2021-11-03 03:57:23,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:57:23,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-03 03:57:23,021 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:57:23,021 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:57:23,021 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:57:23,021 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:57:23,021 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:57:23,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:57:23,023 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:57:23,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:57:23,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:57:23,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:57:23,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:57:23,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 03:57:23,030 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:57:23,031 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:57:23,032 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:57:23,032 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:57:23,032 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:57:23,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:57:23,034 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:57:23,034 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:57:23,035 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-03 03:57:23,035 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:57:23,035 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-11-03 03:57:23,038 INFO L180 QuantifierPusher]: treesize reduction 16, result has 84.5 percent of original size [2021-11-03 03:57:23,040 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-03 03:57:23,041 INFO L180 QuantifierPusher]: treesize reduction 8, result has 91.5 percent of original size [2021-11-03 03:57:23,042 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-03 03:57:23,043 INFO L180 QuantifierPusher]: treesize reduction 8, result has 91.5 percent of original size [2021-11-03 03:57:23,044 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:57:23,045 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:57:23,049 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 03:57:23,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:57:23,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:57:23,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:57:23,089 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.7 percent of original size [2021-11-03 03:57:23,092 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 207 [2021-11-03 03:57:23,096 INFO L180 QuantifierPusher]: treesize reduction 7, result has 96.8 percent of original size [2021-11-03 03:57:23,099 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-11-03 03:57:23,102 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:57:23,105 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-11-03 03:57:23,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:57:23,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:57:23,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:57:23,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:57:23,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:57:23,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:57:23,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:57:23,137 INFO L180 QuantifierPusher]: treesize reduction 29, result has 56.1 percent of original size [2021-11-03 03:57:23,138 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:57:23,139 INFO L180 QuantifierPusher]: treesize reduction 3, result has 93.3 percent of original size [2021-11-03 03:57:23,140 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:57:23,141 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:57:23,142 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:57:23,147 INFO L180 QuantifierPusher]: treesize reduction 29, result has 56.1 percent of original size [2021-11-03 03:57:23,148 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:57:23,149 INFO L180 QuantifierPusher]: treesize reduction 3, result has 93.3 percent of original size [2021-11-03 03:57:23,150 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:57:23,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:57:23,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:57:23,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:57:23,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:57:23,164 INFO L180 IcfgInterpreter]: Interpretation finished