./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/soft_float_3.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/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_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_3.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/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_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/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 cb7f4ed6cebfdd6566b0545c380cf11b477bf4a47ca03270fcb9d9caf829a6c3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:13:57,602 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:13:57,604 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:13:57,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:13:57,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:13:57,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:13:57,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:13:57,651 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:13:57,653 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:13:57,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:13:57,655 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:13:57,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:13:57,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:13:57,658 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:13:57,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:13:57,661 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:13:57,662 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:13:57,663 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:13:57,665 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:13:57,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:13:57,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:13:57,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:13:57,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:13:57,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:13:57,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:13:57,693 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:13:57,693 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:13:57,694 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:13:57,695 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:13:57,696 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:13:57,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:13:57,700 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:13:57,701 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:13:57,702 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:13:57,703 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:13:57,703 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:13:57,704 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:13:57,704 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:13:57,704 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:13:57,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:13:57,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:13:57,707 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-11-03 04:13:57,735 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:13:57,735 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:13:57,736 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:13:57,736 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:13:57,737 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:13:57,737 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:13:57,737 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:13:57,737 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:13:57,737 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:13:57,738 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:13:57,738 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:13:57,738 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:13:57,738 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:13:57,738 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:13:57,739 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:13:57,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:13:57,739 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:13:57,740 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 04:13:57,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:13:57,740 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:13:57,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:13:57,740 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:13:57,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:13:57,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:13:57,741 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-03 04:13:57,741 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:13:57,741 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:13:57,741 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:13:57,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:13:57,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:13:57,742 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:13:57,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:13:57,742 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:13:57,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:13:57,743 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:13:57,743 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:13:57,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:13:57,743 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:13:57,744 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:13:57,744 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:13:57,744 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_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb7f4ed6cebfdd6566b0545c380cf11b477bf4a47ca03270fcb9d9caf829a6c3 [2021-11-03 04:13:57,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:13:58,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:13:58,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:13:58,032 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:13:58,032 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:13:58,033 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/bitvector/soft_float_3.c.cil.c [2021-11-03 04:13:58,115 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/data/f59b69de5/1ef228d992da4409b01a08416d970536/FLAG58ab105a3 [2021-11-03 04:13:58,555 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:13:58,555 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/sv-benchmarks/c/bitvector/soft_float_3.c.cil.c [2021-11-03 04:13:58,570 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/data/f59b69de5/1ef228d992da4409b01a08416d970536/FLAG58ab105a3 [2021-11-03 04:13:59,081 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/data/f59b69de5/1ef228d992da4409b01a08416d970536 [2021-11-03 04:13:59,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:13:59,084 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:13:59,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:13:59,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:13:59,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:13:59,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:13:59" (1/1) ... [2021-11-03 04:13:59,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d7a43b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:59, skipping insertion in model container [2021-11-03 04:13:59,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:13:59" (1/1) ... [2021-11-03 04:13:59,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:13:59,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:13:59,329 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_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/sv-benchmarks/c/bitvector/soft_float_3.c.cil.c[422,435] [2021-11-03 04:13:59,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:13:59,392 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:13:59,403 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_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/sv-benchmarks/c/bitvector/soft_float_3.c.cil.c[422,435] [2021-11-03 04:13:59,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:13:59,444 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:13:59,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:59 WrapperNode [2021-11-03 04:13:59,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:13:59,446 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:13:59,446 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:13:59,446 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:13:59,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:59" (1/1) ... [2021-11-03 04:13:59,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:59" (1/1) ... [2021-11-03 04:13:59,511 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:13:59,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:13:59,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:13:59,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:13:59,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:59" (1/1) ... [2021-11-03 04:13:59,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:59" (1/1) ... [2021-11-03 04:13:59,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:59" (1/1) ... [2021-11-03 04:13:59,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:59" (1/1) ... [2021-11-03 04:13:59,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:59" (1/1) ... [2021-11-03 04:13:59,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:59" (1/1) ... [2021-11-03 04:13:59,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:59" (1/1) ... [2021-11-03 04:13:59,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:13:59,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:13:59,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:13:59,584 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:13:59,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:59" (1/1) ... [2021-11-03 04:13:59,593 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:13:59,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:13:59,621 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:13:59,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:13:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 04:13:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:13:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:13:59,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:14:00,483 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:14:00,484 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-11-03 04:14:00,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:14:00 BoogieIcfgContainer [2021-11-03 04:14:00,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:14:00,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:14:00,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:14:00,512 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:14:00,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:13:59" (1/3) ... [2021-11-03 04:14:00,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241118cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:14:00, skipping insertion in model container [2021-11-03 04:14:00,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:59" (2/3) ... [2021-11-03 04:14:00,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241118cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:14:00, skipping insertion in model container [2021-11-03 04:14:00,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:14:00" (3/3) ... [2021-11-03 04:14:00,514 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_3.c.cil.c [2021-11-03 04:14:00,519 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:14:00,519 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2021-11-03 04:14:00,579 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:14:00,585 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:14:00,585 INFO L340 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2021-11-03 04:14:00,604 INFO L276 IsEmpty]: Start isEmpty. Operand has 142 states, 95 states have (on average 1.8842105263157896) internal successors, (179), 141 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:00,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 04:14:00,638 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:00,639 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 04:14:00,640 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:14:00,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:00,645 INFO L85 PathProgramCache]: Analyzing trace with hash 607523984, now seen corresponding path program 1 times [2021-11-03 04:14:00,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:14:00,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158554892] [2021-11-03 04:14:00,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:00,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:14:00,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:00,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:00,787 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:14:00,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158554892] [2021-11-03 04:14:00,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158554892] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:14:00,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:14:00,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:14:00,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44366928] [2021-11-03 04:14:00,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:14:00,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:14:00,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:14:00,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:14:00,811 INFO L87 Difference]: Start difference. First operand has 142 states, 95 states have (on average 1.8842105263157896) internal successors, (179), 141 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:00,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:00,840 INFO L93 Difference]: Finished difference Result 265 states and 333 transitions. [2021-11-03 04:14:00,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:14:00,842 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-03 04:14:00,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:00,852 INFO L225 Difference]: With dead ends: 265 [2021-11-03 04:14:00,852 INFO L226 Difference]: Without dead ends: 138 [2021-11-03 04:14:00,855 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:14:00,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-03 04:14:00,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2021-11-03 04:14:00,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 94 states have (on average 1.7234042553191489) internal successors, (162), 137 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:00,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2021-11-03 04:14:00,897 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 6 [2021-11-03 04:14:00,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:00,897 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2021-11-03 04:14:00,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:00,898 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2021-11-03 04:14:00,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 04:14:00,898 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:00,899 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 04:14:00,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 04:14:00,899 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:14:00,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:00,900 INFO L85 PathProgramCache]: Analyzing trace with hash 606209850, now seen corresponding path program 1 times [2021-11-03 04:14:00,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:14:00,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794288470] [2021-11-03 04:14:00,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:00,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:14:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:00,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:00,948 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:14:00,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794288470] [2021-11-03 04:14:00,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794288470] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:14:00,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:14:00,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-03 04:14:00,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898802329] [2021-11-03 04:14:00,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:14:00,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:14:00,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:14:00,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:14:00,952 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:01,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:01,097 INFO L93 Difference]: Finished difference Result 288 states and 342 transitions. [2021-11-03 04:14:01,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:14:01,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-03 04:14:01,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:01,100 INFO L225 Difference]: With dead ends: 288 [2021-11-03 04:14:01,100 INFO L226 Difference]: Without dead ends: 168 [2021-11-03 04:14:01,101 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:14:01,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-11-03 04:14:01,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 164. [2021-11-03 04:14:01,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 120 states have (on average 1.5833333333333333) internal successors, (190), 163 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:01,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 190 transitions. [2021-11-03 04:14:01,115 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 190 transitions. Word has length 6 [2021-11-03 04:14:01,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:01,115 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 190 transitions. [2021-11-03 04:14:01,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:01,116 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 190 transitions. [2021-11-03 04:14:01,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 04:14:01,117 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:01,117 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:14:01,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 04:14:01,117 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:14:01,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:01,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1003400065, now seen corresponding path program 1 times [2021-11-03 04:14:01,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:14:01,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964198251] [2021-11-03 04:14:01,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:01,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:14:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:01,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:01,171 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:14:01,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964198251] [2021-11-03 04:14:01,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964198251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:14:01,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:14:01,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:14:01,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194233577] [2021-11-03 04:14:01,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:14:01,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:14:01,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:14:01,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:14:01,174 INFO L87 Difference]: Start difference. First operand 164 states and 190 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:01,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:01,236 INFO L93 Difference]: Finished difference Result 289 states and 334 transitions. [2021-11-03 04:14:01,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:14:01,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-03 04:14:01,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:01,242 INFO L225 Difference]: With dead ends: 289 [2021-11-03 04:14:01,242 INFO L226 Difference]: Without dead ends: 127 [2021-11-03 04:14:01,246 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:14:01,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-03 04:14:01,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-11-03 04:14:01,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 91 states have (on average 1.6043956043956045) internal successors, (146), 126 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:01,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 146 transitions. [2021-11-03 04:14:01,269 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 146 transitions. Word has length 9 [2021-11-03 04:14:01,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:01,269 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 146 transitions. [2021-11-03 04:14:01,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:01,270 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 146 transitions. [2021-11-03 04:14:01,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-03 04:14:01,271 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:01,271 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:14:01,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 04:14:01,272 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:14:01,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:01,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1739838684, now seen corresponding path program 1 times [2021-11-03 04:14:01,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:14:01,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839820624] [2021-11-03 04:14:01,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:01,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:14:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:01,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:01,349 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:14:01,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839820624] [2021-11-03 04:14:01,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839820624] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:14:01,354 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:14:01,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:14:01,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345857899] [2021-11-03 04:14:01,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:14:01,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:14:01,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:14:01,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:14:01,358 INFO L87 Difference]: Start difference. First operand 127 states and 146 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:01,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:01,472 INFO L93 Difference]: Finished difference Result 178 states and 201 transitions. [2021-11-03 04:14:01,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:14:01,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-03 04:14:01,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:01,475 INFO L225 Difference]: With dead ends: 178 [2021-11-03 04:14:01,475 INFO L226 Difference]: Without dead ends: 171 [2021-11-03 04:14:01,477 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:14:01,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-11-03 04:14:01,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 128. [2021-11-03 04:14:01,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 97 states have (on average 1.5257731958762886) internal successors, (148), 127 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:01,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 148 transitions. [2021-11-03 04:14:01,503 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 148 transitions. Word has length 10 [2021-11-03 04:14:01,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:01,504 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 148 transitions. [2021-11-03 04:14:01,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:01,504 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 148 transitions. [2021-11-03 04:14:01,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 04:14:01,505 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:01,505 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:14:01,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 04:14:01,506 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:14:01,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:01,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1899575861, now seen corresponding path program 1 times [2021-11-03 04:14:01,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:14:01,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57602843] [2021-11-03 04:14:01,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:01,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:14:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:01,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:01,540 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:14:01,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57602843] [2021-11-03 04:14:01,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57602843] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:14:01,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:14:01,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:14:01,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699747016] [2021-11-03 04:14:01,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:14:01,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:14:01,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:14:01,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:14:01,543 INFO L87 Difference]: Start difference. First operand 128 states and 148 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:01,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:01,615 INFO L93 Difference]: Finished difference Result 169 states and 190 transitions. [2021-11-03 04:14:01,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:14:01,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-03 04:14:01,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:01,617 INFO L225 Difference]: With dead ends: 169 [2021-11-03 04:14:01,617 INFO L226 Difference]: Without dead ends: 163 [2021-11-03 04:14:01,618 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:14:01,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-03 04:14:01,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 123. [2021-11-03 04:14:01,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 96 states have (on average 1.5) internal successors, (144), 122 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:01,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 144 transitions. [2021-11-03 04:14:01,650 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 144 transitions. Word has length 11 [2021-11-03 04:14:01,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:01,651 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 144 transitions. [2021-11-03 04:14:01,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:01,651 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 144 transitions. [2021-11-03 04:14:01,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 04:14:01,652 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:01,652 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:14:01,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 04:14:01,653 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:14:01,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:01,654 INFO L85 PathProgramCache]: Analyzing trace with hash 2127828885, now seen corresponding path program 1 times [2021-11-03 04:14:01,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:14:01,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688219070] [2021-11-03 04:14:01,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:01,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:14:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:01,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:01,752 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:14:01,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688219070] [2021-11-03 04:14:01,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688219070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:14:01,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:14:01,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:14:01,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284932812] [2021-11-03 04:14:01,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:14:01,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:14:01,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:14:01,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:14:01,762 INFO L87 Difference]: Start difference. First operand 123 states and 144 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:01,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:01,808 INFO L93 Difference]: Finished difference Result 211 states and 244 transitions. [2021-11-03 04:14:01,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:14:01,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-03 04:14:01,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:01,809 INFO L225 Difference]: With dead ends: 211 [2021-11-03 04:14:01,809 INFO L226 Difference]: Without dead ends: 107 [2021-11-03 04:14:01,810 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:14:01,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-03 04:14:01,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2021-11-03 04:14:01,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 79 states have (on average 1.518987341772152) internal successors, (120), 104 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:01,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2021-11-03 04:14:01,814 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 11 [2021-11-03 04:14:01,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:01,815 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2021-11-03 04:14:01,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:01,815 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2021-11-03 04:14:01,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 04:14:01,819 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:01,820 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:14:01,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 04:14:01,820 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:14:01,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:01,821 INFO L85 PathProgramCache]: Analyzing trace with hash 280768698, now seen corresponding path program 1 times [2021-11-03 04:14:01,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:14:01,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249390695] [2021-11-03 04:14:01,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:01,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:14:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:01,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:01,892 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:14:01,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249390695] [2021-11-03 04:14:01,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249390695] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:14:01,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:14:01,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:14:01,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223235541] [2021-11-03 04:14:01,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:14:01,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:14:01,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:14:01,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:14:01,894 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:01,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:01,978 INFO L93 Difference]: Finished difference Result 240 states and 271 transitions. [2021-11-03 04:14:01,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:14:01,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-03 04:14:01,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:01,980 INFO L225 Difference]: With dead ends: 240 [2021-11-03 04:14:01,980 INFO L226 Difference]: Without dead ends: 153 [2021-11-03 04:14:01,981 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:14:01,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-03 04:14:01,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 115. [2021-11-03 04:14:01,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 89 states have (on average 1.4831460674157304) internal successors, (132), 114 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:01,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 132 transitions. [2021-11-03 04:14:01,987 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 132 transitions. Word has length 13 [2021-11-03 04:14:01,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:01,987 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 132 transitions. [2021-11-03 04:14:01,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:01,988 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 132 transitions. [2021-11-03 04:14:01,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-03 04:14:01,989 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:01,989 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:14:01,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 04:14:01,991 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:14:01,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:01,991 INFO L85 PathProgramCache]: Analyzing trace with hash 113895230, now seen corresponding path program 1 times [2021-11-03 04:14:01,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:14:01,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880408522] [2021-11-03 04:14:01,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:01,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:14:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:02,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:02,063 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:14:02,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880408522] [2021-11-03 04:14:02,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880408522] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:14:02,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:14:02,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:14:02,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65383112] [2021-11-03 04:14:02,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:14:02,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:14:02,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:14:02,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:14:02,066 INFO L87 Difference]: Start difference. First operand 115 states and 132 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:02,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:02,147 INFO L93 Difference]: Finished difference Result 150 states and 167 transitions. [2021-11-03 04:14:02,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:14:02,148 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-03 04:14:02,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:02,149 INFO L225 Difference]: With dead ends: 150 [2021-11-03 04:14:02,149 INFO L226 Difference]: Without dead ends: 149 [2021-11-03 04:14:02,149 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:14:02,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-11-03 04:14:02,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 114. [2021-11-03 04:14:02,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 89 states have (on average 1.4606741573033708) internal successors, (130), 113 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:02,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2021-11-03 04:14:02,156 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 14 [2021-11-03 04:14:02,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:02,156 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2021-11-03 04:14:02,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:02,157 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2021-11-03 04:14:02,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:14:02,158 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:02,158 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:14:02,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-03 04:14:02,159 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:14:02,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:02,160 INFO L85 PathProgramCache]: Analyzing trace with hash -264085755, now seen corresponding path program 1 times [2021-11-03 04:14:02,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:14:02,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871394473] [2021-11-03 04:14:02,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:02,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:14:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:02,213 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 04:14:02,214 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:14:02,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871394473] [2021-11-03 04:14:02,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871394473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:14:02,214 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:14:02,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:14:02,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243005594] [2021-11-03 04:14:02,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:14:02,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:14:02,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:14:02,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:14:02,219 INFO L87 Difference]: Start difference. First operand 114 states and 130 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:02,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:02,324 INFO L93 Difference]: Finished difference Result 202 states and 223 transitions. [2021-11-03 04:14:02,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:14:02,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-03 04:14:02,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:02,329 INFO L225 Difference]: With dead ends: 202 [2021-11-03 04:14:02,329 INFO L226 Difference]: Without dead ends: 196 [2021-11-03 04:14:02,329 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:14:02,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-11-03 04:14:02,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 117. [2021-11-03 04:14:02,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 94 states have (on average 1.446808510638298) internal successors, (136), 116 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:02,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 136 transitions. [2021-11-03 04:14:02,335 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 136 transitions. Word has length 18 [2021-11-03 04:14:02,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:02,336 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 136 transitions. [2021-11-03 04:14:02,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:02,336 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 136 transitions. [2021-11-03 04:14:02,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-03 04:14:02,337 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:02,337 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:14:02,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-03 04:14:02,339 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:14:02,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:02,339 INFO L85 PathProgramCache]: Analyzing trace with hash -577829624, now seen corresponding path program 1 times [2021-11-03 04:14:02,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:14:02,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314700897] [2021-11-03 04:14:02,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:02,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:14:02,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:02,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:02,446 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:14:02,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314700897] [2021-11-03 04:14:02,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314700897] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:14:02,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:14:02,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 04:14:02,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179186599] [2021-11-03 04:14:02,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:14:02,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:14:02,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:14:02,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:14:02,449 INFO L87 Difference]: Start difference. First operand 117 states and 136 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:02,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:02,507 INFO L93 Difference]: Finished difference Result 219 states and 254 transitions. [2021-11-03 04:14:02,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:14:02,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-03 04:14:02,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:02,508 INFO L225 Difference]: With dead ends: 219 [2021-11-03 04:14:02,508 INFO L226 Difference]: Without dead ends: 119 [2021-11-03 04:14:02,509 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:14:02,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-03 04:14:02,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 117. [2021-11-03 04:14:02,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 94 states have (on average 1.4361702127659575) internal successors, (135), 116 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:02,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 135 transitions. [2021-11-03 04:14:02,514 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 135 transitions. Word has length 23 [2021-11-03 04:14:02,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:02,517 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 135 transitions. [2021-11-03 04:14:02,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:02,518 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 135 transitions. [2021-11-03 04:14:02,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-03 04:14:02,519 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:02,519 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:14:02,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-03 04:14:02,520 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:14:02,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:02,521 INFO L85 PathProgramCache]: Analyzing trace with hash -618566435, now seen corresponding path program 1 times [2021-11-03 04:14:02,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:14:02,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450894333] [2021-11-03 04:14:02,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:02,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:14:02,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:02,582 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:02,582 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:14:02,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450894333] [2021-11-03 04:14:02,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450894333] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:14:02,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292051159] [2021-11-03 04:14:02,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:02,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:14:02,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:14:02,589 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:14:02,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 04:14:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:02,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:14:02,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:14:02,772 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:02,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:14:02,896 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:02,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292051159] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:14:02,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1062373037] [2021-11-03 04:14:02,925 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2021-11-03 04:14:02,925 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:14:02,931 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:14:02,937 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:14:02,937 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:14:02,995 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:03,006 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:14:03,007 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:03,009 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:14:03,010 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:14:03,010 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:03,011 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 04:14:03,017 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-11-03 04:14:03,051 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_9|], 21=[|v_#valid_10|]} [2021-11-03 04:14:03,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:03,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:03,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:03,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-03 04:14:03,080 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:03,081 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:14:03,081 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:03,082 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:14:03,083 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:14:03,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:03,100 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:03,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:03,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:03,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:03,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:03,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:03,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:03,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:03,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:03,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:03,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-03 04:14:03,126 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:03,129 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:14:03,130 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:03,131 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:14:03,131 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:14:03,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:03,144 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:03,149 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:03,153 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-03 04:14:03,155 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:14:03,155 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-11-03 04:14:03,167 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:03,177 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-03 04:14:03,204 INFO L180 QuantifierPusher]: treesize reduction 6, result has 96.2 percent of original size [2021-11-03 04:14:03,218 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-03 04:14:03,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:03,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:03,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:03,353 INFO L180 QuantifierPusher]: treesize reduction 9, result has 97.7 percent of original size [2021-11-03 04:14:03,377 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 393 [2021-11-03 04:14:03,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:03,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:03,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:03,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:03,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:03,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:03,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:03,530 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-03 04:14:03,535 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:14:03,544 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-03 04:14:03,549 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:14:03,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:03,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:03,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:03,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:03,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:03,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:03,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:03,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:03,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:03,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:03,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:03,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:03,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:03,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:03,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:03,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:03,864 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:03,870 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:14:03,876 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:03,924 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:14:03,928 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:03,933 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-11-03 04:14:03,939 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:14:03,943 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:03,952 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-11-03 04:14:03,964 INFO L185 QuantifierPusher]: treesize reduction 36, result has 89.3 percent of original size 302 [2021-11-03 04:14:03,974 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:14:03,975 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:03,977 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-03 04:14:03,978 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-03 04:14:03,986 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:03,989 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-03 04:14:03,994 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:03,999 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-11-03 04:14:04,004 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:14:06,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1062373037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:14:06,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:14:06,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [5, 5, 5] total 22 [2021-11-03 04:14:06,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750198031] [2021-11-03 04:14:06,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 04:14:06,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:14:06,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 04:14:06,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-11-03 04:14:06,348 INFO L87 Difference]: Start difference. First operand 117 states and 135 transitions. Second operand has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:07,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:07,458 INFO L93 Difference]: Finished difference Result 215 states and 243 transitions. [2021-11-03 04:14:07,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 04:14:07,459 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-03 04:14:07,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:07,460 INFO L225 Difference]: With dead ends: 215 [2021-11-03 04:14:07,461 INFO L226 Difference]: Without dead ends: 178 [2021-11-03 04:14:07,461 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2021-11-03 04:14:07,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-03 04:14:07,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 136. [2021-11-03 04:14:07,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 113 states have (on average 1.4336283185840708) internal successors, (162), 135 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:07,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 162 transitions. [2021-11-03 04:14:07,470 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 162 transitions. Word has length 25 [2021-11-03 04:14:07,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:07,471 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 162 transitions. [2021-11-03 04:14:07,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:07,471 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 162 transitions. [2021-11-03 04:14:07,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-03 04:14:07,472 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:07,472 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:14:07,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:14:07,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-03 04:14:07,697 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:14:07,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:07,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1487910693, now seen corresponding path program 1 times [2021-11-03 04:14:07,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:14:07,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045078228] [2021-11-03 04:14:07,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:07,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:14:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:07,739 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:07,739 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:14:07,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045078228] [2021-11-03 04:14:07,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045078228] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:14:07,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062078876] [2021-11-03 04:14:07,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:07,740 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:14:07,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:14:07,741 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:14:07,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 04:14:07,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:07,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:14:07,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:14:07,890 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:07,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:14:07,970 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:07,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062078876] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:14:07,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2025415499] [2021-11-03 04:14:07,974 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2021-11-03 04:14:07,974 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:14:07,975 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:14:07,975 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:14:07,975 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:14:07,995 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:07,997 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:14:07,998 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:07,999 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:14:07,999 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:14:08,000 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:08,000 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 04:14:08,002 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-11-03 04:14:08,008 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_10|], 21=[|v_#valid_11|]} [2021-11-03 04:14:08,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:08,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:08,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:08,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-03 04:14:08,022 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:08,023 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:14:08,023 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:08,024 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:14:08,024 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:14:08,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:08,029 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:08,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:08,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:08,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:08,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:08,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:08,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:08,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:08,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:08,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:08,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-03 04:14:08,059 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:08,062 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:14:08,063 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:08,063 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:14:08,063 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:14:08,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:08,078 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:08,080 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:08,082 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-03 04:14:08,082 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:14:08,083 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-11-03 04:14:08,088 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:08,092 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-03 04:14:08,103 INFO L180 QuantifierPusher]: treesize reduction 6, result has 96.2 percent of original size [2021-11-03 04:14:08,107 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-03 04:14:08,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:08,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:08,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:08,194 INFO L180 QuantifierPusher]: treesize reduction 9, result has 97.7 percent of original size [2021-11-03 04:14:08,205 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 386 [2021-11-03 04:14:08,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:08,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:08,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:08,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:08,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:08,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:08,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:08,331 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-03 04:14:08,334 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:14:08,341 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-03 04:14:08,345 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:14:08,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:08,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:08,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:08,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:08,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:08,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:08,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:08,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:08,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:08,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:08,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:08,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:08,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:08,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:08,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:08,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:08,575 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:08,579 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:14:08,584 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:08,609 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:14:08,612 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:08,619 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-11-03 04:14:08,630 INFO L185 QuantifierPusher]: treesize reduction 36, result has 89.3 percent of original size 302 [2021-11-03 04:14:08,636 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:14:08,637 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:08,638 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-03 04:14:08,639 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-03 04:14:08,647 INFO L180 QuantifierPusher]: treesize reduction 8, result has 90.1 percent of original size [2021-11-03 04:14:08,650 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 04:14:08,654 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:14:10,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [2025415499] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:14:10,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:14:10,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [5, 5, 5] total 22 [2021-11-03 04:14:10,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775952962] [2021-11-03 04:14:10,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 04:14:10,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:14:10,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 04:14:10,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2021-11-03 04:14:10,828 INFO L87 Difference]: Start difference. First operand 136 states and 162 transitions. Second operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:11,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:11,739 INFO L93 Difference]: Finished difference Result 151 states and 178 transitions. [2021-11-03 04:14:11,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 04:14:11,739 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-03 04:14:11,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:11,740 INFO L225 Difference]: With dead ends: 151 [2021-11-03 04:14:11,741 INFO L226 Difference]: Without dead ends: 149 [2021-11-03 04:14:11,741 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 55 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2021-11-03 04:14:11,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-11-03 04:14:11,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 136. [2021-11-03 04:14:11,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 113 states have (on average 1.4336283185840708) internal successors, (162), 135 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:11,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 162 transitions. [2021-11-03 04:14:11,750 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 162 transitions. Word has length 25 [2021-11-03 04:14:11,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:11,750 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 162 transitions. [2021-11-03 04:14:11,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:11,751 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 162 transitions. [2021-11-03 04:14:11,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-03 04:14:11,752 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:11,752 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:14:11,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:14:11,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-11-03 04:14:11,977 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:14:11,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:11,978 INFO L85 PathProgramCache]: Analyzing trace with hash -2105984770, now seen corresponding path program 1 times [2021-11-03 04:14:11,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:14:11,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269781354] [2021-11-03 04:14:11,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:11,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:14:12,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:12,063 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:12,063 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:14:12,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269781354] [2021-11-03 04:14:12,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269781354] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:14:12,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39685691] [2021-11-03 04:14:12,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:12,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:14:12,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:14:12,069 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:14:12,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 04:14:12,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:12,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:14:12,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:14:12,239 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:12,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:14:12,316 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:12,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39685691] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:14:12,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1988538339] [2021-11-03 04:14:12,321 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2021-11-03 04:14:12,321 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:14:12,322 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:14:12,322 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:14:12,322 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:14:12,332 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:12,336 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:14:12,337 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:12,337 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 04:14:12,339 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:14:12,340 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:12,341 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:14:12,344 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-11-03 04:14:12,347 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_11|], 21=[|v_#valid_12|]} [2021-11-03 04:14:12,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:12,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:12,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:12,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-03 04:14:12,360 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:12,361 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:14:12,363 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:12,364 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:14:12,365 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:14:12,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:12,370 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:12,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:12,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:12,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:12,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:12,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:12,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:12,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:12,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:12,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:12,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-03 04:14:12,393 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:12,398 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:14:12,399 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:12,400 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:14:12,400 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:14:12,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:12,406 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:12,408 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:12,409 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-03 04:14:12,410 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:14:12,410 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-11-03 04:14:12,417 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:12,420 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-03 04:14:12,433 INFO L180 QuantifierPusher]: treesize reduction 6, result has 96.2 percent of original size [2021-11-03 04:14:12,437 INFO L185 QuantifierPusher]: treesize reduction 8, result has 94.5 percent of original size 137 [2021-11-03 04:14:12,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:12,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:12,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:12,508 INFO L180 QuantifierPusher]: treesize reduction 9, result has 97.7 percent of original size [2021-11-03 04:14:12,520 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 386 [2021-11-03 04:14:12,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:12,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:12,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:12,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:12,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:12,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:12,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:12,600 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-03 04:14:12,607 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:14:12,613 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-03 04:14:12,618 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:14:12,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:12,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:12,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:12,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:12,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:12,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:12,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:12,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:12,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:12,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:12,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:12,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:12,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:12,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:12,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:12,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:12,863 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:12,865 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:14:12,869 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:12,890 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:14:12,893 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:12,901 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-11-03 04:14:12,917 INFO L185 QuantifierPusher]: treesize reduction 75, result has 70.6 percent of original size 180 [2021-11-03 04:14:12,923 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:14:12,924 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:12,926 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-03 04:14:12,927 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-03 04:14:12,931 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:12,933 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-03 04:14:12,941 INFO L180 QuantifierPusher]: treesize reduction 8, result has 91.0 percent of original size [2021-11-03 04:14:12,945 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-11-03 04:14:12,948 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:14:15,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1988538339] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:14:15,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:14:15,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [5, 5, 5] total 24 [2021-11-03 04:14:15,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214433607] [2021-11-03 04:14:15,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 04:14:15,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:14:15,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 04:14:15,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2021-11-03 04:14:15,160 INFO L87 Difference]: Start difference. First operand 136 states and 162 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:16,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:16,394 INFO L93 Difference]: Finished difference Result 254 states and 281 transitions. [2021-11-03 04:14:16,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-03 04:14:16,396 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-03 04:14:16,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:16,397 INFO L225 Difference]: With dead ends: 254 [2021-11-03 04:14:16,397 INFO L226 Difference]: Without dead ends: 251 [2021-11-03 04:14:16,398 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2021-11-03 04:14:16,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-11-03 04:14:16,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 138. [2021-11-03 04:14:16,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 115 states have (on average 1.4260869565217391) internal successors, (164), 137 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:16,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 164 transitions. [2021-11-03 04:14:16,407 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 164 transitions. Word has length 26 [2021-11-03 04:14:16,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:16,407 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 164 transitions. [2021-11-03 04:14:16,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:16,408 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 164 transitions. [2021-11-03 04:14:16,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-03 04:14:16,408 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:16,409 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:14:16,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:14:16,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-11-03 04:14:16,617 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:14:16,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:16,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1119409036, now seen corresponding path program 1 times [2021-11-03 04:14:16,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:14:16,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457656605] [2021-11-03 04:14:16,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:16,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:14:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:16,665 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:16,666 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:14:16,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457656605] [2021-11-03 04:14:16,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457656605] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:14:16,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617445116] [2021-11-03 04:14:16,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:16,667 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:14:16,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:14:16,668 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:14:16,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-03 04:14:16,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:16,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:14:16,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:14:16,842 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:16,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:14:16,916 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:16,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617445116] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:14:16,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1253465150] [2021-11-03 04:14:16,918 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2021-11-03 04:14:16,918 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:14:16,919 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:14:16,919 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:14:16,919 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:14:16,926 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:16,927 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:14:16,928 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:16,928 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:14:16,929 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:14:16,929 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:16,929 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 04:14:16,931 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-11-03 04:14:16,934 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_12|], 21=[|v_#valid_13|]} [2021-11-03 04:14:16,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:16,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:16,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:16,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-03 04:14:16,944 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:16,945 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:14:16,946 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:16,947 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:14:16,947 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:14:16,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:16,951 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:16,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:16,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:16,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:16,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:16,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:16,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:16,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:16,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:16,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:16,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-03 04:14:16,969 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:16,971 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:14:16,971 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:16,972 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:14:16,972 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:14:16,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:16,976 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:16,978 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:16,979 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-03 04:14:16,980 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:14:16,980 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-11-03 04:14:16,987 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:16,992 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-03 04:14:17,007 INFO L180 QuantifierPusher]: treesize reduction 6, result has 96.2 percent of original size [2021-11-03 04:14:17,010 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-03 04:14:17,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:17,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:17,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:17,076 INFO L180 QuantifierPusher]: treesize reduction 9, result has 97.7 percent of original size [2021-11-03 04:14:17,085 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 386 [2021-11-03 04:14:17,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:17,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:17,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:17,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:17,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:17,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:17,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:17,154 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-03 04:14:17,156 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:14:17,162 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-03 04:14:17,164 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:14:17,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:17,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:17,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:17,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:17,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:17,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:17,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:17,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:17,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:17,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:17,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:17,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:17,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:17,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:17,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:17,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:17,362 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:17,364 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:14:17,369 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:17,388 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:14:17,390 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:17,395 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-11-03 04:14:17,405 INFO L185 QuantifierPusher]: treesize reduction 75, result has 70.6 percent of original size 180 [2021-11-03 04:14:17,410 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:14:17,411 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:17,413 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-03 04:14:17,414 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-03 04:14:17,421 INFO L180 QuantifierPusher]: treesize reduction 8, result has 90.1 percent of original size [2021-11-03 04:14:17,424 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 04:14:17,433 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:14:19,671 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:14:19,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:14:19,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-11-03 04:14:19,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634267374] [2021-11-03 04:14:19,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 04:14:19,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:14:19,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 04:14:19,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2021-11-03 04:14:19,676 INFO L87 Difference]: Start difference. First operand 138 states and 164 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:19,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:19,821 INFO L93 Difference]: Finished difference Result 326 states and 381 transitions. [2021-11-03 04:14:19,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:14:19,821 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-03 04:14:19,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:19,823 INFO L225 Difference]: With dead ends: 326 [2021-11-03 04:14:19,823 INFO L226 Difference]: Without dead ends: 217 [2021-11-03 04:14:19,823 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2021-11-03 04:14:19,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-03 04:14:19,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 158. [2021-11-03 04:14:19,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 135 states have (on average 1.3925925925925926) internal successors, (188), 157 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:19,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 188 transitions. [2021-11-03 04:14:19,834 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 188 transitions. Word has length 26 [2021-11-03 04:14:19,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:19,834 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 188 transitions. [2021-11-03 04:14:19,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:19,834 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 188 transitions. [2021-11-03 04:14:19,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-03 04:14:19,835 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:19,835 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:14:19,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:14:20,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2021-11-03 04:14:20,061 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:14:20,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:20,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1152651667, now seen corresponding path program 1 times [2021-11-03 04:14:20,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:14:20,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727638221] [2021-11-03 04:14:20,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:20,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:14:20,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:20,119 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:20,120 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:14:20,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727638221] [2021-11-03 04:14:20,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727638221] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:14:20,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157663873] [2021-11-03 04:14:20,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:20,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:14:20,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:14:20,133 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:14:20,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-03 04:14:20,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:20,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-03 04:14:20,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:14:20,378 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-03 04:14:20,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:14:20,496 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-03 04:14:20,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157663873] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:14:20,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-03 04:14:20,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [5] total 11 [2021-11-03 04:14:20,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613561058] [2021-11-03 04:14:20,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:14:20,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:14:20,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:14:20,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-03 04:14:20,499 INFO L87 Difference]: Start difference. First operand 158 states and 188 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:20,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:20,622 INFO L93 Difference]: Finished difference Result 225 states and 263 transitions. [2021-11-03 04:14:20,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:14:20,622 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-03 04:14:20,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:20,624 INFO L225 Difference]: With dead ends: 225 [2021-11-03 04:14:20,624 INFO L226 Difference]: Without dead ends: 186 [2021-11-03 04:14:20,625 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:14:20,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-03 04:14:20,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 180. [2021-11-03 04:14:20,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 157 states have (on average 1.3694267515923566) internal successors, (215), 179 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:20,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 215 transitions. [2021-11-03 04:14:20,637 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 215 transitions. Word has length 28 [2021-11-03 04:14:20,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:20,638 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 215 transitions. [2021-11-03 04:14:20,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:20,638 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 215 transitions. [2021-11-03 04:14:20,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-03 04:14:20,639 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:20,639 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:14:20,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:14:20,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:14:20,852 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:14:20,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:20,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1148170238, now seen corresponding path program 1 times [2021-11-03 04:14:20,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:14:20,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791435756] [2021-11-03 04:14:20,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:20,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:14:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:20,896 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-03 04:14:20,896 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:14:20,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791435756] [2021-11-03 04:14:20,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791435756] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:14:20,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:14:20,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:14:20,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840236358] [2021-11-03 04:14:20,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:14:20,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:14:20,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:14:20,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:14:20,898 INFO L87 Difference]: Start difference. First operand 180 states and 215 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:20,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:20,971 INFO L93 Difference]: Finished difference Result 232 states and 274 transitions. [2021-11-03 04:14:20,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:14:20,972 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-03 04:14:20,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:20,974 INFO L225 Difference]: With dead ends: 232 [2021-11-03 04:14:20,974 INFO L226 Difference]: Without dead ends: 230 [2021-11-03 04:14:20,974 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:14:20,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-11-03 04:14:20,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 182. [2021-11-03 04:14:20,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 160 states have (on average 1.35) internal successors, (216), 181 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:20,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 216 transitions. [2021-11-03 04:14:20,986 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 216 transitions. Word has length 28 [2021-11-03 04:14:20,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:20,986 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 216 transitions. [2021-11-03 04:14:20,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:20,987 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 216 transitions. [2021-11-03 04:14:20,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-03 04:14:20,987 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:20,987 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:14:20,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-11-03 04:14:20,989 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:14:20,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:20,989 INFO L85 PathProgramCache]: Analyzing trace with hash 283239883, now seen corresponding path program 1 times [2021-11-03 04:14:20,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:14:20,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542190673] [2021-11-03 04:14:20,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:20,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:14:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:21,023 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-03 04:14:21,026 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:14:21,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542190673] [2021-11-03 04:14:21,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542190673] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:14:21,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:14:21,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:14:21,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52854412] [2021-11-03 04:14:21,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:14:21,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:14:21,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:14:21,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:14:21,028 INFO L87 Difference]: Start difference. First operand 182 states and 216 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:21,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:21,095 INFO L93 Difference]: Finished difference Result 225 states and 261 transitions. [2021-11-03 04:14:21,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:14:21,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-03 04:14:21,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:21,097 INFO L225 Difference]: With dead ends: 225 [2021-11-03 04:14:21,097 INFO L226 Difference]: Without dead ends: 222 [2021-11-03 04:14:21,097 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:14:21,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-11-03 04:14:21,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 168. [2021-11-03 04:14:21,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 149 states have (on average 1.3288590604026846) internal successors, (198), 167 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:21,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 198 transitions. [2021-11-03 04:14:21,109 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 198 transitions. Word has length 28 [2021-11-03 04:14:21,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:21,109 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 198 transitions. [2021-11-03 04:14:21,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:21,109 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 198 transitions. [2021-11-03 04:14:21,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-03 04:14:21,110 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:21,110 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:14:21,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-11-03 04:14:21,110 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:14:21,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:21,111 INFO L85 PathProgramCache]: Analyzing trace with hash 192595350, now seen corresponding path program 1 times [2021-11-03 04:14:21,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:14:21,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267436099] [2021-11-03 04:14:21,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:21,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:14:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:21,154 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:21,154 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:14:21,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267436099] [2021-11-03 04:14:21,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267436099] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:14:21,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367614322] [2021-11-03 04:14:21,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:21,155 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:14:21,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:14:21,156 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:14:21,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-03 04:14:21,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:21,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:14:21,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:14:21,440 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:21,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:14:21,553 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:21,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367614322] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:14:21,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [863168005] [2021-11-03 04:14:21,555 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2021-11-03 04:14:21,555 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:14:21,556 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:14:21,556 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:14:21,556 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:14:21,565 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:21,566 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:14:21,567 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:21,567 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:14:21,568 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:14:21,568 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:21,569 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 04:14:21,570 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-11-03 04:14:21,572 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 21=[|v_#valid_14|]} [2021-11-03 04:14:21,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:21,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:21,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:21,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-03 04:14:21,585 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:21,585 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:14:21,586 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:21,586 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:14:21,586 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:14:21,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:21,592 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:21,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:21,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:21,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:21,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:21,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:21,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:21,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:21,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:21,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:21,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-03 04:14:21,612 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:21,614 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:14:21,615 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:21,615 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:14:21,615 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:14:21,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:21,621 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:21,622 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:21,624 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-03 04:14:21,624 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:14:21,625 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-11-03 04:14:21,631 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:21,636 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-03 04:14:21,655 INFO L180 QuantifierPusher]: treesize reduction 6, result has 96.2 percent of original size [2021-11-03 04:14:21,658 INFO L185 QuantifierPusher]: treesize reduction 8, result has 94.5 percent of original size 137 [2021-11-03 04:14:21,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:21,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:21,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:21,729 INFO L180 QuantifierPusher]: treesize reduction 9, result has 97.7 percent of original size [2021-11-03 04:14:21,749 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 386 [2021-11-03 04:14:21,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:21,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:21,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:21,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:21,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:21,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:21,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:21,815 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-03 04:14:21,817 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:14:21,822 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-03 04:14:21,825 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:14:21,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:21,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:21,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:21,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:21,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:21,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:21,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:21,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:21,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:21,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:21,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:21,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:21,943 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:21,947 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-03 04:14:21,955 INFO L180 QuantifierPusher]: treesize reduction 8, result has 92.3 percent of original size [2021-11-03 04:14:21,959 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-03 04:14:21,967 INFO L180 QuantifierPusher]: treesize reduction 8, result has 89.7 percent of original size [2021-11-03 04:14:21,970 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-03 04:14:21,975 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:14:24,361 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:14:24,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:14:24,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-11-03 04:14:24,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918793503] [2021-11-03 04:14:24,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 04:14:24,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:14:24,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 04:14:24,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2021-11-03 04:14:24,363 INFO L87 Difference]: Start difference. First operand 168 states and 198 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:25,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:25,166 INFO L93 Difference]: Finished difference Result 290 states and 341 transitions. [2021-11-03 04:14:25,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:14:25,167 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-03 04:14:25,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:25,168 INFO L225 Difference]: With dead ends: 290 [2021-11-03 04:14:25,168 INFO L226 Difference]: Without dead ends: 169 [2021-11-03 04:14:25,169 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 60 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2021-11-03 04:14:25,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-11-03 04:14:25,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 168. [2021-11-03 04:14:25,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 149 states have (on average 1.3020134228187918) internal successors, (194), 167 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:25,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 194 transitions. [2021-11-03 04:14:25,180 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 194 transitions. Word has length 29 [2021-11-03 04:14:25,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:25,181 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 194 transitions. [2021-11-03 04:14:25,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:25,181 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 194 transitions. [2021-11-03 04:14:25,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-03 04:14:25,182 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:25,182 INFO L513 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:14:25,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:14:25,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2021-11-03 04:14:25,397 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:14:25,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:25,398 INFO L85 PathProgramCache]: Analyzing trace with hash 293656012, now seen corresponding path program 2 times [2021-11-03 04:14:25,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:14:25,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013477320] [2021-11-03 04:14:25,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:25,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:14:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:25,478 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:25,478 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:14:25,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013477320] [2021-11-03 04:14:25,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013477320] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:14:25,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92079805] [2021-11-03 04:14:25,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:14:25,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:14:25,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:14:25,480 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:14:25,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-03 04:14:25,651 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-11-03 04:14:25,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:14:25,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:14:25,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:14:25,781 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:25,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:14:25,968 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:25,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92079805] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:14:25,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1187625919] [2021-11-03 04:14:25,971 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2021-11-03 04:14:25,972 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:14:25,972 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:14:25,972 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:14:25,972 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:14:25,980 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:25,981 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:14:25,981 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:25,982 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 04:14:25,983 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:14:25,983 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:25,984 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:14:25,985 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-11-03 04:14:25,988 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_14|], 21=[|v_#valid_15|]} [2021-11-03 04:14:25,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:25,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:25,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:25,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-03 04:14:25,999 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:25,999 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:14:26,000 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:26,000 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:14:26,001 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:14:26,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:26,007 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:26,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:26,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:26,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:26,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:26,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:26,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:26,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:26,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:26,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:26,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-03 04:14:26,030 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:26,032 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:14:26,033 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:26,033 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:14:26,033 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:14:26,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:26,037 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:26,039 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:26,040 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-03 04:14:26,041 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:14:26,041 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-11-03 04:14:26,058 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:26,062 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-03 04:14:26,074 INFO L180 QuantifierPusher]: treesize reduction 6, result has 96.2 percent of original size [2021-11-03 04:14:26,081 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-03 04:14:26,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:26,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:26,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:26,144 INFO L180 QuantifierPusher]: treesize reduction 9, result has 97.7 percent of original size [2021-11-03 04:14:26,154 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 393 [2021-11-03 04:14:26,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:26,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:26,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:26,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:26,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:26,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:26,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:26,234 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-03 04:14:26,236 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:14:26,242 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-03 04:14:26,244 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:14:26,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:26,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:26,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:26,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:26,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:26,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:26,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:26,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:26,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:26,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:26,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:26,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:26,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:26,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:26,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:26,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:26,414 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:26,416 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:14:26,419 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:26,437 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:14:26,439 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:26,444 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-11-03 04:14:26,453 INFO L185 QuantifierPusher]: treesize reduction 36, result has 89.3 percent of original size 302 [2021-11-03 04:14:26,467 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:14:26,468 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:26,470 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-03 04:14:26,471 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-03 04:14:26,480 INFO L180 QuantifierPusher]: treesize reduction 8, result has 90.1 percent of original size [2021-11-03 04:14:26,481 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 04:14:26,487 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:14:28,818 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:14:28,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:14:28,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2021-11-03 04:14:28,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112934131] [2021-11-03 04:14:28,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 04:14:28,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:14:28,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 04:14:28,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=687, Unknown=0, NotChecked=0, Total=930 [2021-11-03 04:14:28,820 INFO L87 Difference]: Start difference. First operand 168 states and 194 transitions. Second operand has 17 states, 17 states have (on average 5.176470588235294) internal successors, (88), 17 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:29,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:29,050 INFO L93 Difference]: Finished difference Result 415 states and 480 transitions. [2021-11-03 04:14:29,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-03 04:14:29,050 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.176470588235294) internal successors, (88), 17 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-03 04:14:29,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:29,052 INFO L225 Difference]: With dead ends: 415 [2021-11-03 04:14:29,052 INFO L226 Difference]: Without dead ends: 291 [2021-11-03 04:14:29,053 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 113 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=243, Invalid=687, Unknown=0, NotChecked=0, Total=930 [2021-11-03 04:14:29,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-11-03 04:14:29,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 208. [2021-11-03 04:14:29,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 189 states have (on average 1.2804232804232805) internal successors, (242), 207 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:29,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 242 transitions. [2021-11-03 04:14:29,067 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 242 transitions. Word has length 46 [2021-11-03 04:14:29,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:29,068 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 242 transitions. [2021-11-03 04:14:29,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.176470588235294) internal successors, (88), 17 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:29,068 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 242 transitions. [2021-11-03 04:14:29,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 04:14:29,069 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:29,069 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:14:29,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:14:29,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:14:29,285 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:14:29,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:29,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1756928854, now seen corresponding path program 2 times [2021-11-03 04:14:29,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:14:29,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090770040] [2021-11-03 04:14:29,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:29,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:14:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:29,400 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:29,400 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:14:29,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090770040] [2021-11-03 04:14:29,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090770040] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:14:29,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674646251] [2021-11-03 04:14:29,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:14:29,401 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:14:29,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:14:29,402 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:14:29,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-03 04:14:29,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-11-03 04:14:29,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:14:29,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 04:14:29,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:14:30,050 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:30,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:14:30,348 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:30,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674646251] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:14:30,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [107452417] [2021-11-03 04:14:30,351 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2021-11-03 04:14:30,351 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:14:30,351 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:14:30,351 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:14:30,351 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:14:30,367 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:30,368 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:14:30,369 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:30,369 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:14:30,370 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:14:30,370 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:30,371 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 04:14:30,372 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-11-03 04:14:30,375 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_15|], 21=[|v_#valid_16|]} [2021-11-03 04:14:30,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:30,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:30,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:30,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-03 04:14:30,390 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:30,391 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:14:30,392 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:30,393 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:14:30,393 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:14:30,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:30,397 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:30,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:30,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:30,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:30,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:30,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:30,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:30,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:30,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:30,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:30,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-03 04:14:30,425 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:30,427 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:14:30,428 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:30,428 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:14:30,429 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:14:30,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:30,436 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:30,437 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:30,439 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-03 04:14:30,440 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:14:30,440 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-11-03 04:14:30,447 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:30,451 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-03 04:14:30,463 INFO L180 QuantifierPusher]: treesize reduction 6, result has 96.2 percent of original size [2021-11-03 04:14:30,466 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-03 04:14:30,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:30,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:30,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:30,535 INFO L180 QuantifierPusher]: treesize reduction 9, result has 97.7 percent of original size [2021-11-03 04:14:30,543 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 386 [2021-11-03 04:14:30,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:30,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:30,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:30,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:30,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:30,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:30,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:30,604 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-03 04:14:30,606 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:14:30,612 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-03 04:14:30,614 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:14:30,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:30,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:30,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:30,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:30,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:30,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:30,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:30,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:30,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:30,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:30,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:30,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:30,728 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:30,731 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-03 04:14:30,739 INFO L180 QuantifierPusher]: treesize reduction 8, result has 92.3 percent of original size [2021-11-03 04:14:30,742 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-03 04:14:30,750 INFO L180 QuantifierPusher]: treesize reduction 8, result has 89.7 percent of original size [2021-11-03 04:14:30,751 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-03 04:14:30,756 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:14:33,495 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:14:33,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:14:33,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2021-11-03 04:14:33,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575960731] [2021-11-03 04:14:33,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 04:14:33,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:14:33,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 04:14:33,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=880, Unknown=0, NotChecked=0, Total=1056 [2021-11-03 04:14:33,497 INFO L87 Difference]: Start difference. First operand 208 states and 242 transitions. Second operand has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:44,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:44,978 INFO L93 Difference]: Finished difference Result 330 states and 385 transitions. [2021-11-03 04:14:44,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-03 04:14:44,978 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-03 04:14:44,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:44,980 INFO L225 Difference]: With dead ends: 330 [2021-11-03 04:14:44,980 INFO L226 Difference]: Without dead ends: 209 [2021-11-03 04:14:44,981 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 112 SyntacticMatches, 11 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=294, Invalid=1186, Unknown=2, NotChecked=0, Total=1482 [2021-11-03 04:14:44,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-11-03 04:14:44,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 208. [2021-11-03 04:14:44,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 189 states have (on average 1.2380952380952381) internal successors, (234), 207 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:44,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 234 transitions. [2021-11-03 04:14:44,994 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 234 transitions. Word has length 49 [2021-11-03 04:14:44,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:44,995 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 234 transitions. [2021-11-03 04:14:44,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:44,995 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 234 transitions. [2021-11-03 04:14:44,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-03 04:14:44,996 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:44,996 INFO L513 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:14:45,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-03 04:14:45,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable183 [2021-11-03 04:14:45,200 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:14:45,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:45,201 INFO L85 PathProgramCache]: Analyzing trace with hash -744883636, now seen corresponding path program 3 times [2021-11-03 04:14:45,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:14:45,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020981568] [2021-11-03 04:14:45,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:45,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:14:45,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:45,393 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:45,393 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:14:45,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020981568] [2021-11-03 04:14:45,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020981568] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:14:45,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928949306] [2021-11-03 04:14:45,394 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-03 04:14:45,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:14:45,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:14:45,401 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:14:45,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-03 04:14:45,647 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-03 04:14:45,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:14:45,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 04:14:45,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:14:45,950 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:45,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:14:46,473 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:46,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928949306] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:14:46,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1723709348] [2021-11-03 04:14:46,475 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2021-11-03 04:14:46,475 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:14:46,476 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:14:46,476 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:14:46,476 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:14:46,482 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:46,483 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:14:46,484 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:46,484 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 04:14:46,484 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:14:46,485 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:46,491 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:14:46,492 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-11-03 04:14:46,494 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_16|], 21=[|v_#valid_17|]} [2021-11-03 04:14:46,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:46,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:46,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:46,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-03 04:14:46,505 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:46,506 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:14:46,506 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:46,507 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:14:46,507 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:14:46,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:46,511 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:46,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:46,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:46,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:46,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:46,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:46,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:46,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:46,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:46,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:46,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-03 04:14:46,540 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:46,542 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:14:46,542 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:46,542 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:14:46,543 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:14:46,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:46,546 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:46,546 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:46,548 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-03 04:14:46,548 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:14:46,548 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-11-03 04:14:46,553 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:46,556 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-03 04:14:46,577 INFO L180 QuantifierPusher]: treesize reduction 6, result has 96.2 percent of original size [2021-11-03 04:14:46,592 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-03 04:14:46,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:46,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:46,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:46,674 INFO L180 QuantifierPusher]: treesize reduction 9, result has 97.7 percent of original size [2021-11-03 04:14:46,686 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 386 [2021-11-03 04:14:46,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:46,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:46,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:46,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:46,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:46,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:46,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:46,748 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-03 04:14:46,750 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:14:46,755 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-03 04:14:46,757 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:14:46,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:46,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:46,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:46,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:46,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:46,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:46,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:46,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:46,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:46,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:46,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:46,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:46,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:46,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:46,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:46,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:46,931 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:46,933 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:14:46,937 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:46,956 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:14:46,958 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:46,963 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-11-03 04:14:46,980 INFO L185 QuantifierPusher]: treesize reduction 75, result has 70.6 percent of original size 180 [2021-11-03 04:14:46,986 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:14:46,987 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:46,989 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-03 04:14:46,992 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-03 04:14:46,999 INFO L180 QuantifierPusher]: treesize reduction 8, result has 90.1 percent of original size [2021-11-03 04:14:47,000 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 04:14:47,005 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:14:49,445 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:14:49,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:14:49,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2021-11-03 04:14:49,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084087480] [2021-11-03 04:14:49,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-03 04:14:49,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:14:49,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-03 04:14:49,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=699, Invalid=1463, Unknown=0, NotChecked=0, Total=2162 [2021-11-03 04:14:49,447 INFO L87 Difference]: Start difference. First operand 208 states and 234 transitions. Second operand has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:49,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:49,762 INFO L93 Difference]: Finished difference Result 543 states and 624 transitions. [2021-11-03 04:14:49,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-03 04:14:49,762 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-03 04:14:49,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:49,768 INFO L225 Difference]: With dead ends: 543 [2021-11-03 04:14:49,768 INFO L226 Difference]: Without dead ends: 419 [2021-11-03 04:14:49,771 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 225 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=699, Invalid=1463, Unknown=0, NotChecked=0, Total=2162 [2021-11-03 04:14:49,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-11-03 04:14:49,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 288. [2021-11-03 04:14:49,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 269 states have (on average 1.2267657992565055) internal successors, (330), 287 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:49,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 330 transitions. [2021-11-03 04:14:49,797 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 330 transitions. Word has length 86 [2021-11-03 04:14:49,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:49,798 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 330 transitions. [2021-11-03 04:14:49,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:49,798 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 330 transitions. [2021-11-03 04:14:49,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-03 04:14:49,799 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:49,799 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:14:49,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-03 04:14:50,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:14:50,005 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:14:50,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:50,006 INFO L85 PathProgramCache]: Analyzing trace with hash -728291626, now seen corresponding path program 3 times [2021-11-03 04:14:50,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:14:50,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325216540] [2021-11-03 04:14:50,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:50,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:14:50,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:50,258 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 0 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:50,258 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:14:50,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325216540] [2021-11-03 04:14:50,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325216540] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:14:50,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553372943] [2021-11-03 04:14:50,259 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-03 04:14:50,259 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:14:50,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:14:50,260 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:14:50,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-03 04:14:50,562 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-03 04:14:50,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:14:50,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-03 04:14:50,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:14:51,288 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 0 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:51,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:14:52,187 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 0 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:52,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553372943] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:14:52,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1942530787] [2021-11-03 04:14:52,189 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2021-11-03 04:14:52,190 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:14:52,190 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:14:52,190 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:14:52,190 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:14:52,198 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:52,198 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:14:52,199 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:52,199 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 04:14:52,200 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:14:52,200 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:52,201 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:14:52,202 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-11-03 04:14:52,205 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_17|], 21=[|v_#valid_18|]} [2021-11-03 04:14:52,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:52,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:52,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:52,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-03 04:14:52,217 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:52,218 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:14:52,218 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:52,219 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:14:52,219 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:14:52,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:52,222 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:52,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:52,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:52,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:52,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:52,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:52,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:52,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:52,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:52,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:14:52,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-03 04:14:52,247 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:52,248 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:14:52,249 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:52,249 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:14:52,250 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:14:52,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:52,253 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:52,254 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:52,256 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-03 04:14:52,256 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:14:52,257 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-11-03 04:14:52,264 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:52,268 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-03 04:14:52,304 INFO L180 QuantifierPusher]: treesize reduction 6, result has 96.2 percent of original size [2021-11-03 04:14:52,307 INFO L185 QuantifierPusher]: treesize reduction 8, result has 94.5 percent of original size 137 [2021-11-03 04:14:52,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:52,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:52,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:52,364 INFO L180 QuantifierPusher]: treesize reduction 9, result has 97.7 percent of original size [2021-11-03 04:14:52,372 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 386 [2021-11-03 04:14:52,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:52,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:52,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:52,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:52,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:52,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:52,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:52,443 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-03 04:14:52,445 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:14:52,451 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-03 04:14:52,453 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:14:52,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:52,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:52,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:52,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:52,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:52,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:52,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:52,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:52,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:52,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:52,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:52,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:14:52,573 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:52,579 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-03 04:14:52,586 INFO L180 QuantifierPusher]: treesize reduction 8, result has 92.3 percent of original size [2021-11-03 04:14:52,590 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-03 04:14:52,598 INFO L180 QuantifierPusher]: treesize reduction 8, result has 89.7 percent of original size [2021-11-03 04:14:52,600 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-03 04:14:52,605 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:14:55,775 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:14:55,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:14:55,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2021-11-03 04:14:55,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521528282] [2021-11-03 04:14:55,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-03 04:14:55,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:14:55,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-03 04:14:55,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=1948, Unknown=0, NotChecked=0, Total=2352 [2021-11-03 04:14:55,780 INFO L87 Difference]: Start difference. First operand 288 states and 330 transitions. Second operand has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:15:05,384 WARN L207 SmtUtils]: Spent 7.58 s on a formula simplification. DAG size of input: 38 DAG size of output: 10 [2021-11-03 04:15:24,728 WARN L207 SmtUtils]: Spent 6.89 s on a formula simplification. DAG size of input: 30 DAG size of output: 10 [2021-11-03 04:15:37,219 WARN L207 SmtUtils]: Spent 5.98 s on a formula simplification. DAG size of input: 26 DAG size of output: 10 [2021-11-03 04:16:30,493 WARN L207 SmtUtils]: Spent 24.68 s on a formula simplification. DAG size of input: 62 DAG size of output: 14 [2021-11-03 04:16:30,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:30,977 INFO L93 Difference]: Finished difference Result 410 states and 473 transitions. [2021-11-03 04:16:30,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-03 04:16:30,978 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-03 04:16:30,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:30,980 INFO L225 Difference]: With dead ends: 410 [2021-11-03 04:16:30,980 INFO L226 Difference]: Without dead ends: 289 [2021-11-03 04:16:30,982 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 216 SyntacticMatches, 19 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 927 ImplicationChecksByTransitivity, 98.2s TimeCoverageRelationStatistics Valid=712, Invalid=2698, Unknown=12, NotChecked=0, Total=3422 [2021-11-03 04:16:30,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-11-03 04:16:31,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 288. [2021-11-03 04:16:31,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 269 states have (on average 1.1895910780669146) internal successors, (320), 287 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:31,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 320 transitions. [2021-11-03 04:16:31,011 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 320 transitions. Word has length 89 [2021-11-03 04:16:31,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:31,012 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 320 transitions. [2021-11-03 04:16:31,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:31,012 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 320 transitions. [2021-11-03 04:16:31,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-03 04:16:31,014 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:31,014 INFO L513 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:31,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-03 04:16:31,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:16:31,230 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-11-03 04:16:31,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:31,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1515079370, now seen corresponding path program 4 times [2021-11-03 04:16:31,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:16:31,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992577950] [2021-11-03 04:16:31,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:31,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:16:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 04:16:31,278 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-03 04:16:31,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 04:16:31,382 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-03 04:16:31,382 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-03 04:16:31,383 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,385 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,385 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,386 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,386 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,386 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,386 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,386 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,388 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,388 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,388 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,388 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,388 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,389 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,389 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,389 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,389 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,389 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,389 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,390 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,390 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,390 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,390 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,390 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,391 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,391 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,391 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,391 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,391 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,392 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,392 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,392 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,392 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,392 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,393 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,393 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,393 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,393 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,393 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,394 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,394 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:31,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2021-11-03 04:16:31,397 INFO L731 BasicCegarLoop]: Path program histogram: [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:31,400 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 04:16:31,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:16:31 BoogieIcfgContainer [2021-11-03 04:16:31,477 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 04:16:31,477 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 04:16:31,478 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 04:16:31,478 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 04:16:31,478 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:14:00" (3/4) ... [2021-11-03 04:16:31,481 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-03 04:16:31,481 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 04:16:31,482 INFO L168 Benchmark]: Toolchain (without parser) took 152397.34 ms. Allocated memory was 102.8 MB in the beginning and 186.6 MB in the end (delta: 83.9 MB). Free memory was 59.8 MB in the beginning and 106.7 MB in the end (delta: -46.8 MB). Peak memory consumption was 37.8 MB. Max. memory is 16.1 GB. [2021-11-03 04:16:31,482 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 102.8 MB. Free memory was 76.6 MB in the beginning and 76.5 MB in the end (delta: 55.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:16:31,482 INFO L168 Benchmark]: CACSL2BoogieTranslator took 355.80 ms. Allocated memory is still 102.8 MB. Free memory was 59.6 MB in the beginning and 74.0 MB in the end (delta: -14.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:16:31,483 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.41 ms. Allocated memory is still 102.8 MB. Free memory was 74.0 MB in the beginning and 71.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:16:31,483 INFO L168 Benchmark]: Boogie Preprocessor took 65.61 ms. Allocated memory is still 102.8 MB. Free memory was 71.6 MB in the beginning and 69.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:16:31,483 INFO L168 Benchmark]: RCFGBuilder took 905.57 ms. Allocated memory is still 102.8 MB. Free memory was 69.8 MB in the beginning and 40.1 MB in the end (delta: 29.6 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:16:31,483 INFO L168 Benchmark]: TraceAbstraction took 150988.87 ms. Allocated memory was 102.8 MB in the beginning and 186.6 MB in the end (delta: 83.9 MB). Free memory was 39.6 MB in the beginning and 106.7 MB in the end (delta: -67.1 MB). Peak memory consumption was 19.0 MB. Max. memory is 16.1 GB. [2021-11-03 04:16:31,484 INFO L168 Benchmark]: Witness Printer took 3.69 ms. Allocated memory is still 186.6 MB. Free memory is still 106.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:16:31,485 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 102.8 MB. Free memory was 76.6 MB in the beginning and 76.5 MB in the end (delta: 55.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 355.80 ms. Allocated memory is still 102.8 MB. Free memory was 59.6 MB in the beginning and 74.0 MB in the end (delta: -14.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.41 ms. Allocated memory is still 102.8 MB. Free memory was 74.0 MB in the beginning and 71.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.61 ms. Allocated memory is still 102.8 MB. Free memory was 71.6 MB in the beginning and 69.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 905.57 ms. Allocated memory is still 102.8 MB. Free memory was 69.8 MB in the beginning and 40.1 MB in the end (delta: 29.6 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 150988.87 ms. Allocated memory was 102.8 MB in the beginning and 186.6 MB in the end (delta: 83.9 MB). Free memory was 39.6 MB in the beginning and 106.7 MB in the end (delta: -67.1 MB). Peak memory consumption was 19.0 MB. Max. memory is 16.1 GB. * Witness Printer took 3.69 ms. Allocated memory is still 186.6 MB. Free memory is still 106.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of bitwiseOr at line 69, overapproximation of bitwiseAnd at line 68. Possible FailurePath: [L213] unsigned int a ; [L214] unsigned int ma = __VERIFIER_nondet_uint(); [L215] signed char ea = __VERIFIER_nondet_char(); [L216] unsigned int b ; [L217] unsigned int mb = __VERIFIER_nondet_uint(); [L218] signed char eb = __VERIFIER_nondet_char(); [L219] unsigned int r_mul ; [L220] unsigned int zero ; [L221] unsigned int one ; [L222] int sb ; [L223] int tmp ; [L224] int tmp___0 ; [L225] int tmp___1 ; [L226] int __retres16 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L230] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND FALSE !(m < 1U << 24U) [L68] m = m & ~ (1U << 24U) [L69] EXPR e + 128 [L69] EXPR (e + 128) << 24U [L69] res = m | (unsigned int )((e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L231] one = base2flt(1, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] EXPR e + 128 [L69] (e + 128) << 24U - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 164]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 164]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 167]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 167]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 169]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 169]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 170]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 170]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 193]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 193]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 206]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 206]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 206]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 206]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 142 locations, 46 error locations. Started 1 CEGAR loops. OverallTime: 150.8s, OverallIterations: 23, TraceHistogramMax: 24, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 112.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 2617 SDtfs, 2511 SDslu, 6979 SDs, 0 SdLazy, 4553 SolverSat, 386 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1384 GetRequests, 1014 SyntacticMatches, 53 SemanticMatches, 317 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4436 ImplicationChecksByTransitivity, 130.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=288occurred in iteration=21, InterpolantAutomatonStates: 212, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 22 MinimizatonAttempts, 795 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 5.8s InterpolantComputationTime, 1174 NumberOfCodeBlocks, 1174 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 1422 ConstructedInterpolants, 0 QuantifiedInterpolants, 5627 SizeOfPredicates, 20 NumberOfNonLiveVariables, 1345 ConjunctsInSsa, 118 ConjunctsInUnsatCore, 42 InterpolantComputations, 14 PerfectInterpolantSequences, 25/3453 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME[ms]: 2386, ICFG_INTERPRETER_ENTERED_PROCEDURES: 3, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 57, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 107, TOOLS_POST_TIME[ms]: 909, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 107, TOOLS_QUANTIFIERELIM_TIME[ms]: 880, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 172, FLUID_QUERY_TIME[ms]: 10, FLUID_QUERIES: 186, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 12, DOMAIN_JOIN_TIME[ms]: 740, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 6, DOMAIN_WIDEN_TIME[ms]: 497, DOMAIN_ISSUBSETEQ_APPLICATIONS: 9, DOMAIN_ISSUBSETEQ_TIME[ms]: 61, DOMAIN_ISBOTTOM_APPLICATIONS: 57, DOMAIN_ISBOTTOM_TIME[ms]: 74, LOOP_SUMMARIZER_APPLICATIONS: 3, LOOP_SUMMARIZER_CACHE_MISSES: 3, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 767, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 767, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 9, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 3, PATH_EXPR_TIME[ms]: 5, REGEX_TO_DAG_TIME[ms]: 7, DAG_COMPRESSION_TIME[ms]: 36, DAG_COMPRESSION_PROCESSED_NODES: 1095, DAG_COMPRESSION_RETAINED_NODES: 155, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-03 04:16:31,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1622daca-b0a5-4fe3-aa1a-862c0c0022b5/bin/utaipan-aC7eJsxGYH/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample