./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Benghazi.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/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_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/Benghazi.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/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 64bit --witnessprinter.graph.data.programhash 9edf84ee73e15e033440f38035e679f46457b07702832d589a58530a086e57e5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:10:27,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:10:27,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:10:28,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:10:28,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:10:28,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:10:28,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:10:28,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:10:28,062 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:10:28,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:10:28,070 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:10:28,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:10:28,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:10:28,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:10:28,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:10:28,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:10:28,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:10:28,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:10:28,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:10:28,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:10:28,091 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:10:28,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:10:28,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:10:28,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:10:28,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:10:28,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:10:28,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:10:28,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:10:28,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:10:28,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:10:28,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:10:28,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:10:28,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:10:28,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:10:28,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:10:28,123 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:10:28,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:10:28,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:10:28,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:10:28,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:10:28,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:10:28,126 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-03 04:10:28,172 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:10:28,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:10:28,174 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:10:28,174 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:10:28,174 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:10:28,174 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:10:28,175 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:10:28,175 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:10:28,181 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:10:28,181 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:10:28,182 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:10:28,183 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:10:28,183 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:10:28,183 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:10:28,183 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:10:28,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:10:28,184 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 04:10:28,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:10:28,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:10:28,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:10:28,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:10:28,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:10:28,185 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-03 04:10:28,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:10:28,186 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:10:28,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:10:28,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:10:28,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:10:28,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:10:28,188 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:10:28,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:10:28,188 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:10:28,189 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:10:28,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:10:28,189 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:10:28,189 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:10:28,189 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:10:28,190 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_a4178659-fa06-4def-a7e5-fcc9a743f257/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9edf84ee73e15e033440f38035e679f46457b07702832d589a58530a086e57e5 [2021-11-03 04:10:28,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:10:28,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:10:28,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:10:28,465 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:10:28,466 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:10:28,467 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/termination-crafted/Benghazi.c [2021-11-03 04:10:28,531 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/data/ff08a7a70/7250a37d6929439995de6c214c71597a/FLAGcd8154426 [2021-11-03 04:10:28,975 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:10:28,976 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/sv-benchmarks/c/termination-crafted/Benghazi.c [2021-11-03 04:10:28,996 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/data/ff08a7a70/7250a37d6929439995de6c214c71597a/FLAGcd8154426 [2021-11-03 04:10:29,501 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/data/ff08a7a70/7250a37d6929439995de6c214c71597a [2021-11-03 04:10:29,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:10:29,509 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:10:29,519 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:10:29,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:10:29,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:10:29,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:10:29" (1/1) ... [2021-11-03 04:10:29,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69df19be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:29, skipping insertion in model container [2021-11-03 04:10:29,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:10:29" (1/1) ... [2021-11-03 04:10:29,538 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:10:29,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:10:29,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:10:29,710 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:10:29,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:10:29,736 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:10:29,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:29 WrapperNode [2021-11-03 04:10:29,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:10:29,738 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:10:29,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:10:29,738 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:10:29,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:29" (1/1) ... [2021-11-03 04:10:29,753 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:29" (1/1) ... [2021-11-03 04:10:29,776 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:10:29,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:10:29,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:10:29,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:10:29,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:29" (1/1) ... [2021-11-03 04:10:29,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:29" (1/1) ... [2021-11-03 04:10:29,787 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:29" (1/1) ... [2021-11-03 04:10:29,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:29" (1/1) ... [2021-11-03 04:10:29,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:29" (1/1) ... [2021-11-03 04:10:29,795 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:29" (1/1) ... [2021-11-03 04:10:29,801 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:29" (1/1) ... [2021-11-03 04:10:29,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:10:29,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:10:29,804 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:10:29,804 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:10:29,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:29" (1/1) ... [2021-11-03 04:10:29,813 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:10:29,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:10:29,843 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:10:29,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:10:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:10:29,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:10:30,119 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:10:30,119 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-03 04:10:30,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:10:30 BoogieIcfgContainer [2021-11-03 04:10:30,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:10:30,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:10:30,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:10:30,129 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:10:30,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:10:29" (1/3) ... [2021-11-03 04:10:30,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@139e616c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:10:30, skipping insertion in model container [2021-11-03 04:10:30,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:29" (2/3) ... [2021-11-03 04:10:30,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@139e616c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:10:30, skipping insertion in model container [2021-11-03 04:10:30,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:10:30" (3/3) ... [2021-11-03 04:10:30,132 INFO L111 eAbstractionObserver]: Analyzing ICFG Benghazi.c [2021-11-03 04:10:30,137 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:10:30,138 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-03 04:10:30,183 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:10:30,190 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 04:10:30,190 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-03 04:10:30,204 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 8 states have (on average 1.875) internal successors, (15), 14 states have internal predecessors, (15), 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 04:10:30,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-03 04:10:30,209 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:10:30,209 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-03 04:10:30,210 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:10:30,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:10:30,216 INFO L85 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2021-11-03 04:10:30,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:10:30,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346326696] [2021-11-03 04:10:30,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:30,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:10:30,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:30,359 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 04:10:30,360 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:10:30,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346326696] [2021-11-03 04:10:30,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346326696] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:10:30,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:10:30,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-03 04:10:30,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070011306] [2021-11-03 04:10:30,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:10:30,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:10:30,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:10:30,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:10:30,402 INFO L87 Difference]: Start difference. First operand has 15 states, 8 states have (on average 1.875) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 04:10:30,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:10:30,467 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-11-03 04:10:30,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:10:30,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2021-11-03 04:10:30,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:10:30,477 INFO L225 Difference]: With dead ends: 20 [2021-11-03 04:10:30,485 INFO L226 Difference]: Without dead ends: 17 [2021-11-03 04:10:30,488 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 04:10:30,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-03 04:10:30,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-11-03 04:10:30,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.6) internal successors, (16), 15 states have internal predecessors, (16), 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 04:10:30,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-11-03 04:10:30,524 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 3 [2021-11-03 04:10:30,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:10:30,525 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-11-03 04:10:30,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 04:10:30,526 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-11-03 04:10:30,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-03 04:10:30,526 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:10:30,527 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-03 04:10:30,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 04:10:30,528 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:10:30,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:10:30,539 INFO L85 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2021-11-03 04:10:30,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:10:30,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794929409] [2021-11-03 04:10:30,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:30,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:10:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:30,607 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 04:10:30,607 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:10:30,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794929409] [2021-11-03 04:10:30,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794929409] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:10:30,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:10:30,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:10:30,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352387530] [2021-11-03 04:10:30,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:10:30,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:10:30,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:10:30,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:10:30,614 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:30,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:10:30,666 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-11-03 04:10:30,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:10:30,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-03 04:10:30,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:10:30,668 INFO L225 Difference]: With dead ends: 22 [2021-11-03 04:10:30,669 INFO L226 Difference]: Without dead ends: 21 [2021-11-03 04:10:30,671 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 04:10:30,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-03 04:10:30,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2021-11-03 04:10:30,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 16 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 04:10:30,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-11-03 04:10:30,678 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 4 [2021-11-03 04:10:30,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:10:30,678 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-11-03 04:10:30,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:30,679 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-11-03 04:10:30,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 04:10:30,680 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:10:30,680 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 04:10:30,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 04:10:30,681 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:10:30,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:10:30,682 INFO L85 PathProgramCache]: Analyzing trace with hash 29862563, now seen corresponding path program 1 times [2021-11-03 04:10:30,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:10:30,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687949458] [2021-11-03 04:10:30,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:30,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:10:30,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:30,719 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 04:10:30,720 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:10:30,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687949458] [2021-11-03 04:10:30,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687949458] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:10:30,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:10:30,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-03 04:10:30,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685642372] [2021-11-03 04:10:30,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:10:30,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:10:30,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:10:30,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:10:30,723 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:30,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:10:30,737 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2021-11-03 04:10:30,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:10:30,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-03 04:10:30,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:10:30,739 INFO L225 Difference]: With dead ends: 24 [2021-11-03 04:10:30,739 INFO L226 Difference]: Without dead ends: 23 [2021-11-03 04:10:30,739 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 04:10:30,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-03 04:10:30,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2021-11-03 04:10:30,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.5) internal successors, (18), 17 states have internal predecessors, (18), 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 04:10:30,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-11-03 04:10:30,744 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 5 [2021-11-03 04:10:30,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:10:30,744 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-11-03 04:10:30,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:30,745 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-11-03 04:10:30,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 04:10:30,745 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:10:30,746 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 04:10:30,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 04:10:30,746 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:10:30,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:10:30,747 INFO L85 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2021-11-03 04:10:30,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:10:30,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597222062] [2021-11-03 04:10:30,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:30,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:10:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:30,771 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 04:10:30,771 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:10:30,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597222062] [2021-11-03 04:10:30,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597222062] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:10:30,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:10:30,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-03 04:10:30,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502165325] [2021-11-03 04:10:30,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:10:30,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:10:30,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:10:30,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:10:30,775 INFO L87 Difference]: Start difference. First operand 18 states and 18 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 04:10:30,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:10:30,787 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-11-03 04:10:30,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:10:30,788 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 04:10:30,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:10:30,789 INFO L225 Difference]: With dead ends: 24 [2021-11-03 04:10:30,789 INFO L226 Difference]: Without dead ends: 23 [2021-11-03 04:10:30,789 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 04:10:30,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-03 04:10:30,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2021-11-03 04:10:30,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 18 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 04:10:30,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-11-03 04:10:30,793 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 6 [2021-11-03 04:10:30,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:10:30,794 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-11-03 04:10:30,794 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 04:10:30,795 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-11-03 04:10:30,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-03 04:10:30,795 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:10:30,795 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:10:30,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 04:10:30,796 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:10:30,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:10:30,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1366846491, now seen corresponding path program 1 times [2021-11-03 04:10:30,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:10:30,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038007611] [2021-11-03 04:10:30,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:30,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:10:30,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:30,826 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 04:10:30,826 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:10:30,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038007611] [2021-11-03 04:10:30,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038007611] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:10:30,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:10:30,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:10:30,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901363609] [2021-11-03 04:10:30,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:10:30,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:10:30,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:10:30,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:10:30,830 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:30,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:10:30,890 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-11-03 04:10:30,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:10:30,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-03 04:10:30,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:10:30,893 INFO L225 Difference]: With dead ends: 27 [2021-11-03 04:10:30,893 INFO L226 Difference]: Without dead ends: 26 [2021-11-03 04:10:30,894 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 04:10:30,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-03 04:10:30,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 20. [2021-11-03 04:10:30,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 19 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:30,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-11-03 04:10:30,900 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 7 [2021-11-03 04:10:30,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:10:30,901 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-11-03 04:10:30,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:30,901 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-11-03 04:10:30,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 04:10:30,902 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:10:30,902 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:10:30,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 04:10:30,903 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:10:30,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:10:30,903 INFO L85 PathProgramCache]: Analyzing trace with hash 577431791, now seen corresponding path program 1 times [2021-11-03 04:10:30,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:10:30,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753796169] [2021-11-03 04:10:30,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:30,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:10:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:30,958 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 04:10:30,958 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:10:30,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753796169] [2021-11-03 04:10:30,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753796169] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:10:30,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:10:30,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:10:30,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659924646] [2021-11-03 04:10:30,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:10:30,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:10:30,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:10:30,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:10:30,967 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 04:10:31,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:10:31,006 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2021-11-03 04:10:31,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:10:31,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2021-11-03 04:10:31,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:10:31,015 INFO L225 Difference]: With dead ends: 27 [2021-11-03 04:10:31,016 INFO L226 Difference]: Without dead ends: 26 [2021-11-03 04:10:31,016 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 04:10:31,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-03 04:10:31,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2021-11-03 04:10:31,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.4) internal successors, (21), 20 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:31,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2021-11-03 04:10:31,027 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 8 [2021-11-03 04:10:31,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:10:31,027 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2021-11-03 04:10:31,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 04:10:31,028 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2021-11-03 04:10:31,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-03 04:10:31,028 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:10:31,028 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:10:31,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 04:10:31,029 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:10:31,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:10:31,030 INFO L85 PathProgramCache]: Analyzing trace with hash 861171249, now seen corresponding path program 1 times [2021-11-03 04:10:31,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:10:31,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733096386] [2021-11-03 04:10:31,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:31,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:10:31,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:31,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:31,124 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:10:31,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733096386] [2021-11-03 04:10:31,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733096386] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:10:31,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154169135] [2021-11-03 04:10:31,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:31,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:10:31,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:10:31,127 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:10:31,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 04:10:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:31,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:10:31,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:10:31,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:31,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:10:31,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:31,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154169135] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:10:31,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [337834988] [2021-11-03 04:10:31,464 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-03 04:10:31,464 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:10:31,469 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:10:31,474 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:10:31,475 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:10:31,506 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:10:31,511 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-03 04:10:31,520 INFO L180 QuantifierPusher]: treesize reduction 7, result has 82.1 percent of original size [2021-11-03 04:10:31,522 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-03 04:10:31,525 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.0 percent of original size [2021-11-03 04:10:31,528 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-03 04:10:31,531 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size [2021-11-03 04:10:31,533 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 04:10:31,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:31,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:31,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:31,586 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:10:31,596 INFO L185 QuantifierPusher]: treesize reduction 6, result has 91.7 percent of original size 66 [2021-11-03 04:10:31,602 INFO L180 QuantifierPusher]: treesize reduction 14, result has 83.7 percent of original size [2021-11-03 04:10:31,606 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:10:31,612 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.9 percent of original size [2021-11-03 04:10:31,616 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-11-03 04:10:31,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:31,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:31,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:31,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:31,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:31,662 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:10:31,664 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-03 04:10:31,667 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-11-03 04:10:31,669 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:10:31,672 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-11-03 04:10:31,674 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:10:31,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:31,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:31,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:31,708 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.0 percent of original size [2021-11-03 04:10:31,715 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-11-03 04:10:31,719 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.2 percent of original size [2021-11-03 04:10:31,722 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-03 04:10:31,727 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.7 percent of original size [2021-11-03 04:10:31,730 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:10:31,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:31,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:31,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:31,776 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:10:31,783 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-03 04:10:31,786 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-11-03 04:10:31,791 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:10:31,795 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-11-03 04:10:31,800 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:10:31,807 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:10:31,812 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-03 04:10:31,818 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-11-03 04:10:31,821 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:10:31,826 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-11-03 04:10:31,829 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:10:31,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:31,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:31,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:31,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:31,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:31,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:31,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:31,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:31,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:31,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:31,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:31,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:31,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:31,927 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:10:32,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [337834988] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:10:32,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:10:32,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3, 3, 3] total 16 [2021-11-03 04:10:32,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620909784] [2021-11-03 04:10:32,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 04:10:32,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:10:32,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 04:10:32,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2021-11-03 04:10:32,279 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 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 04:10:32,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:10:32,338 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-11-03 04:10:32,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 04:10:32,339 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 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 10 [2021-11-03 04:10:32,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:10:32,340 INFO L225 Difference]: With dead ends: 21 [2021-11-03 04:10:32,340 INFO L226 Difference]: Without dead ends: 17 [2021-11-03 04:10:32,340 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2021-11-03 04:10:32,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-03 04:10:32,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-11-03 04:10:32,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 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 04:10:32,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-11-03 04:10:32,343 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 10 [2021-11-03 04:10:32,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:10:32,343 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-11-03 04:10:32,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 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 04:10:32,343 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-11-03 04:10:32,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-03 04:10:32,344 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:10:32,344 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-03 04:10:32,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:10:32,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-03 04:10:32,545 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:10:32,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:10:32,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1343116429, now seen corresponding path program 1 times [2021-11-03 04:10:32,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:10:32,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90971191] [2021-11-03 04:10:32,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:32,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:10:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:32,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:32,581 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:10:32,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90971191] [2021-11-03 04:10:32,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90971191] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:10:32,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816813521] [2021-11-03 04:10:32,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:32,582 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:10:32,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:10:32,583 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:10:32,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 04:10:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:32,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:10:32,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:10:32,690 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:32,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:10:32,776 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:32,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816813521] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:10:32,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [954529864] [2021-11-03 04:10:32,778 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-03 04:10:32,779 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:10:32,779 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:10:32,779 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:10:32,779 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:10:32,785 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:10:32,787 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-03 04:10:32,790 INFO L180 QuantifierPusher]: treesize reduction 7, result has 82.1 percent of original size [2021-11-03 04:10:32,792 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-03 04:10:32,794 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.0 percent of original size [2021-11-03 04:10:32,796 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-03 04:10:32,798 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size [2021-11-03 04:10:32,799 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-03 04:10:32,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:32,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:32,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:32,814 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:10:32,859 INFO L185 QuantifierPusher]: treesize reduction 6, result has 91.7 percent of original size 66 [2021-11-03 04:10:32,867 INFO L180 QuantifierPusher]: treesize reduction 14, result has 83.7 percent of original size [2021-11-03 04:10:32,874 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:10:32,878 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.9 percent of original size [2021-11-03 04:10:32,886 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-11-03 04:10:32,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:32,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:32,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:32,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:32,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:32,922 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:10:32,924 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-03 04:10:32,926 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-11-03 04:10:32,929 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:10:32,932 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-11-03 04:10:32,935 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:10:32,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:32,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:32,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:32,963 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.0 percent of original size [2021-11-03 04:10:32,981 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-11-03 04:10:32,984 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.2 percent of original size [2021-11-03 04:10:32,989 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-03 04:10:32,992 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.7 percent of original size [2021-11-03 04:10:32,997 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:10:33,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:33,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:33,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:33,027 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:10:33,031 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-03 04:10:33,034 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-11-03 04:10:33,040 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:10:33,042 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-11-03 04:10:33,046 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:10:33,050 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:10:33,051 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-03 04:10:33,054 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-11-03 04:10:33,056 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:10:33,061 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-11-03 04:10:33,062 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:10:33,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:33,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:33,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:33,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:33,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:33,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:33,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:33,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:33,091 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:10:33,410 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:10:33,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:10:33,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2021-11-03 04:10:33,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4910500] [2021-11-03 04:10:33,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:10:33,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:10:33,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:10:33,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:10:33,412 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 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 04:10:33,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:10:33,541 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2021-11-03 04:10:33,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:10:33,541 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 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 12 [2021-11-03 04:10:33,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:10:33,542 INFO L225 Difference]: With dead ends: 37 [2021-11-03 04:10:33,542 INFO L226 Difference]: Without dead ends: 35 [2021-11-03 04:10:33,543 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2021-11-03 04:10:33,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-03 04:10:33,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-11-03 04:10:33,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 34 states have internal predecessors, (35), 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 04:10:33,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2021-11-03 04:10:33,548 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 12 [2021-11-03 04:10:33,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:10:33,548 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2021-11-03 04:10:33,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 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 04:10:33,548 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2021-11-03 04:10:33,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-03 04:10:33,549 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:10:33,549 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1] [2021-11-03 04:10:33,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:10:33,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:10:33,761 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:10:33,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:10:33,761 INFO L85 PathProgramCache]: Analyzing trace with hash 992275125, now seen corresponding path program 1 times [2021-11-03 04:10:33,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:10:33,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522176651] [2021-11-03 04:10:33,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:33,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:10:33,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:33,853 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:33,853 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:10:33,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522176651] [2021-11-03 04:10:33,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522176651] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:10:33,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403419268] [2021-11-03 04:10:33,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:33,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:10:33,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:10:33,854 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:10:33,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 04:10:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:33,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:10:33,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:10:34,008 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:34,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:10:34,149 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:34,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403419268] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:10:34,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1602168536] [2021-11-03 04:10:34,152 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-03 04:10:34,152 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:10:34,152 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:10:34,152 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:10:34,152 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:10:34,167 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:10:34,169 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-03 04:10:34,172 INFO L180 QuantifierPusher]: treesize reduction 7, result has 82.1 percent of original size [2021-11-03 04:10:34,174 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-03 04:10:34,176 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.0 percent of original size [2021-11-03 04:10:34,178 INFO L185 QuantifierPusher]: treesize reduction 8, result has 71.4 percent of original size 20 [2021-11-03 04:10:34,180 INFO L180 QuantifierPusher]: treesize reduction 16, result has 61.9 percent of original size [2021-11-03 04:10:34,182 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-03 04:10:34,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:34,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:34,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:34,193 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:10:34,196 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:10:34,201 INFO L180 QuantifierPusher]: treesize reduction 10, result has 87.8 percent of original size [2021-11-03 04:10:34,204 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:10:34,207 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.9 percent of original size [2021-11-03 04:10:34,221 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-11-03 04:10:34,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:34,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:34,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:34,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:34,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:34,239 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:10:34,241 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-03 04:10:34,244 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-11-03 04:10:34,246 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:10:34,254 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-11-03 04:10:34,256 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:10:34,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:34,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:34,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:34,274 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.0 percent of original size [2021-11-03 04:10:34,280 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-11-03 04:10:34,282 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.2 percent of original size [2021-11-03 04:10:34,286 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-03 04:10:34,288 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.7 percent of original size [2021-11-03 04:10:34,292 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:10:34,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:34,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:34,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:34,307 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:10:34,309 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-03 04:10:34,310 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-11-03 04:10:34,312 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:10:34,314 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-11-03 04:10:34,315 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:10:34,319 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:10:34,322 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-03 04:10:34,325 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-11-03 04:10:34,327 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:10:34,330 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-11-03 04:10:34,332 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:10:34,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:34,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:34,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:34,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:34,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:34,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:34,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:34,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:34,358 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:10:34,669 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:10:34,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:10:34,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2021-11-03 04:10:34,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571337184] [2021-11-03 04:10:34,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 04:10:34,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:10:34,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 04:10:34,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2021-11-03 04:10:34,671 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand has 14 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 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 04:10:34,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:10:34,946 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2021-11-03 04:10:34,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 04:10:34,946 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 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 04:10:34,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:10:34,947 INFO L225 Difference]: With dead ends: 68 [2021-11-03 04:10:34,947 INFO L226 Difference]: Without dead ends: 66 [2021-11-03 04:10:34,948 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2021-11-03 04:10:34,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-11-03 04:10:34,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2021-11-03 04:10:34,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 64 states have internal predecessors, (66), 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 04:10:34,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2021-11-03 04:10:34,961 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 28 [2021-11-03 04:10:34,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:10:34,962 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2021-11-03 04:10:34,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 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 04:10:34,962 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2021-11-03 04:10:34,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-03 04:10:34,965 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:10:34,966 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 1, 1] [2021-11-03 04:10:35,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:10:35,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-11-03 04:10:35,185 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:10:35,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:10:35,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1090881907, now seen corresponding path program 2 times [2021-11-03 04:10:35,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:10:35,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132273354] [2021-11-03 04:10:35,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:35,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:10:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:35,323 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:35,324 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:10:35,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132273354] [2021-11-03 04:10:35,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132273354] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:10:35,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427445540] [2021-11-03 04:10:35,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:10:35,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:10:35,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:10:35,333 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:10:35,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-03 04:10:35,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-03 04:10:35,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:10:35,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-03 04:10:35,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:10:35,956 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 33 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:35,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:10:36,628 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 9 proven. 166 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:36,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427445540] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:10:36,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1602160530] [2021-11-03 04:10:36,630 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-03 04:10:36,630 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:10:36,631 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:10:36,631 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:10:36,631 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:10:36,634 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:10:36,636 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-03 04:10:36,639 INFO L180 QuantifierPusher]: treesize reduction 7, result has 82.1 percent of original size [2021-11-03 04:10:36,641 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-03 04:10:36,642 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.0 percent of original size [2021-11-03 04:10:36,646 INFO L185 QuantifierPusher]: treesize reduction 8, result has 71.4 percent of original size 20 [2021-11-03 04:10:36,648 INFO L180 QuantifierPusher]: treesize reduction 16, result has 61.9 percent of original size [2021-11-03 04:10:36,649 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-03 04:10:36,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:36,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:36,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:36,658 INFO L180 QuantifierPusher]: treesize reduction 7, result has 90.0 percent of original size [2021-11-03 04:10:36,662 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-11-03 04:10:36,665 INFO L180 QuantifierPusher]: treesize reduction 8, result has 88.7 percent of original size [2021-11-03 04:10:36,667 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-03 04:10:36,669 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.2 percent of original size [2021-11-03 04:10:36,673 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-03 04:10:36,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:36,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:36,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:36,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:36,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:36,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:36,688 INFO L180 QuantifierPusher]: treesize reduction 7, result has 83.3 percent of original size [2021-11-03 04:10:36,690 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 04:10:36,691 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.9 percent of original size [2021-11-03 04:10:36,696 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 04:10:36,701 INFO L180 QuantifierPusher]: treesize reduction 8, result has 84.0 percent of original size [2021-11-03 04:10:36,703 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 04:10:36,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:36,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:36,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:36,714 INFO L180 QuantifierPusher]: treesize reduction 10, result has 85.9 percent of original size [2021-11-03 04:10:36,721 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-03 04:10:36,723 INFO L180 QuantifierPusher]: treesize reduction 5, result has 92.6 percent of original size [2021-11-03 04:10:36,725 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-03 04:10:36,728 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.2 percent of original size [2021-11-03 04:10:36,729 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-03 04:10:36,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:36,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:36,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:36,740 INFO L180 QuantifierPusher]: treesize reduction 7, result has 83.3 percent of original size [2021-11-03 04:10:36,742 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 04:10:36,743 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.9 percent of original size [2021-11-03 04:10:36,745 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 04:10:36,746 INFO L180 QuantifierPusher]: treesize reduction 8, result has 84.0 percent of original size [2021-11-03 04:10:36,747 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 04:10:36,753 INFO L180 QuantifierPusher]: treesize reduction 7, result has 83.3 percent of original size [2021-11-03 04:10:36,755 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 04:10:36,759 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.9 percent of original size [2021-11-03 04:10:36,760 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 04:10:36,762 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:10:37,432 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:10:37,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:10:37,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 16] total 44 [2021-11-03 04:10:37,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710647169] [2021-11-03 04:10:37,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-03 04:10:37,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:10:37,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-03 04:10:37,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=2435, Unknown=0, NotChecked=0, Total=2756 [2021-11-03 04:10:37,436 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand has 46 states, 45 states have (on average 3.6) internal successors, (162), 45 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 04:10:39,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:10:39,802 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2021-11-03 04:10:39,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-03 04:10:39,803 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 3.6) internal successors, (162), 45 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) Word has length 54 [2021-11-03 04:10:39,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:10:39,804 INFO L225 Difference]: With dead ends: 74 [2021-11-03 04:10:39,804 INFO L226 Difference]: Without dead ends: 73 [2021-11-03 04:10:39,808 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 113 SyntacticMatches, 8 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2536 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1514, Invalid=7416, Unknown=0, NotChecked=0, Total=8930 [2021-11-03 04:10:39,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-11-03 04:10:39,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 64. [2021-11-03 04:10:39,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0158730158730158) internal successors, (64), 63 states have internal predecessors, (64), 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 04:10:39,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2021-11-03 04:10:39,817 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 54 [2021-11-03 04:10:39,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:10:39,817 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2021-11-03 04:10:39,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 3.6) internal successors, (162), 45 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 04:10:39,818 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2021-11-03 04:10:39,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-03 04:10:39,819 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:10:39,819 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 1, 1] [2021-11-03 04:10:39,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:10:40,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:10:40,025 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:10:40,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:10:40,026 INFO L85 PathProgramCache]: Analyzing trace with hash 995912677, now seen corresponding path program 2 times [2021-11-03 04:10:40,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:10:40,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306418917] [2021-11-03 04:10:40,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:40,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:10:40,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:40,177 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:40,178 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:10:40,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306418917] [2021-11-03 04:10:40,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306418917] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:10:40,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619916668] [2021-11-03 04:10:40,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:10:40,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:10:40,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:10:40,181 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:10:40,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-03 04:10:40,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-03 04:10:40,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:10:40,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-03 04:10:40,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:10:41,258 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:41,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:10:42,683 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:42,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619916668] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:10:42,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1868654756] [2021-11-03 04:10:42,686 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-03 04:10:42,686 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:10:42,686 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:10:42,687 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:10:42,687 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:10:42,696 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:10:42,697 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-03 04:10:42,699 INFO L180 QuantifierPusher]: treesize reduction 7, result has 82.1 percent of original size [2021-11-03 04:10:42,708 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-03 04:10:42,710 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.0 percent of original size [2021-11-03 04:10:42,711 INFO L185 QuantifierPusher]: treesize reduction 8, result has 71.4 percent of original size 20 [2021-11-03 04:10:42,712 INFO L180 QuantifierPusher]: treesize reduction 16, result has 61.9 percent of original size [2021-11-03 04:10:42,713 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-03 04:10:42,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:42,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:42,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:42,722 INFO L180 QuantifierPusher]: treesize reduction 7, result has 90.0 percent of original size [2021-11-03 04:10:42,725 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-11-03 04:10:42,727 INFO L180 QuantifierPusher]: treesize reduction 8, result has 88.7 percent of original size [2021-11-03 04:10:42,729 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-03 04:10:42,730 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.2 percent of original size [2021-11-03 04:10:42,732 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-03 04:10:42,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:42,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:42,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:42,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:42,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:42,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:42,747 INFO L180 QuantifierPusher]: treesize reduction 7, result has 83.3 percent of original size [2021-11-03 04:10:42,748 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 04:10:42,750 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.9 percent of original size [2021-11-03 04:10:42,752 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 04:10:42,753 INFO L180 QuantifierPusher]: treesize reduction 8, result has 84.0 percent of original size [2021-11-03 04:10:42,754 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 04:10:42,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:42,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:42,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:42,765 INFO L180 QuantifierPusher]: treesize reduction 10, result has 85.9 percent of original size [2021-11-03 04:10:42,768 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-03 04:10:42,770 INFO L180 QuantifierPusher]: treesize reduction 5, result has 92.6 percent of original size [2021-11-03 04:10:42,771 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-03 04:10:42,773 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.2 percent of original size [2021-11-03 04:10:42,776 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-03 04:10:42,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:42,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:42,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:42,787 INFO L180 QuantifierPusher]: treesize reduction 7, result has 83.3 percent of original size [2021-11-03 04:10:42,788 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 04:10:42,789 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.9 percent of original size [2021-11-03 04:10:42,791 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 04:10:42,792 INFO L180 QuantifierPusher]: treesize reduction 8, result has 84.0 percent of original size [2021-11-03 04:10:42,793 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 04:10:42,797 INFO L180 QuantifierPusher]: treesize reduction 7, result has 83.3 percent of original size [2021-11-03 04:10:42,798 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 04:10:42,800 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.9 percent of original size [2021-11-03 04:10:42,801 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 04:10:42,803 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:10:43,678 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:10:43,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:10:43,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 24, 24] total 62 [2021-11-03 04:10:43,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967682052] [2021-11-03 04:10:43,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-03 04:10:43,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:10:43,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-03 04:10:43,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=468, Invalid=4502, Unknown=0, NotChecked=0, Total=4970 [2021-11-03 04:10:43,683 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand has 64 states, 63 states have (on average 3.0) internal successors, (189), 63 states have internal predecessors, (189), 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 04:10:48,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:10:48,608 INFO L93 Difference]: Finished difference Result 128 states and 136 transitions. [2021-11-03 04:10:48,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-03 04:10:48,609 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 3.0) internal successors, (189), 63 states have internal predecessors, (189), 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 63 [2021-11-03 04:10:48,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:10:48,610 INFO L225 Difference]: With dead ends: 128 [2021-11-03 04:10:48,610 INFO L226 Difference]: Without dead ends: 127 [2021-11-03 04:10:48,616 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 123 SyntacticMatches, 9 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3876 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=2879, Invalid=13377, Unknown=0, NotChecked=0, Total=16256 [2021-11-03 04:10:48,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-03 04:10:48,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-11-03 04:10:48,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.007936507936508) internal successors, (127), 126 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:48,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2021-11-03 04:10:48,629 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 63 [2021-11-03 04:10:48,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:10:48,630 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2021-11-03 04:10:48,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 3.0) internal successors, (189), 63 states have internal predecessors, (189), 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 04:10:48,630 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2021-11-03 04:10:48,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-03 04:10:48,632 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:10:48,633 INFO L513 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 17, 17, 1, 1] [2021-11-03 04:10:48,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-03 04:10:48,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:10:48,849 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:10:48,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:10:48,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1733496651, now seen corresponding path program 3 times [2021-11-03 04:10:48,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:10:48,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117204135] [2021-11-03 04:10:48,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:48,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:10:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:49,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 0 proven. 1054 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:49,243 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:10:49,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117204135] [2021-11-03 04:10:49,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117204135] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:10:49,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151430368] [2021-11-03 04:10:49,244 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-03 04:10:49,244 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:10:49,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:10:49,245 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:10:49,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-03 04:10:49,462 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-03 04:10:49,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:10:49,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-03 04:10:49,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:10:49,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 0 proven. 1054 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:49,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:10:50,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 0 proven. 1054 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:50,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151430368] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:10:50,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [186581913] [2021-11-03 04:10:50,757 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-03 04:10:50,758 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:10:50,758 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:10:50,758 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:10:50,758 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:10:50,763 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:10:50,765 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-03 04:10:50,767 INFO L180 QuantifierPusher]: treesize reduction 7, result has 82.1 percent of original size [2021-11-03 04:10:50,767 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-03 04:10:50,768 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.0 percent of original size [2021-11-03 04:10:50,769 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-03 04:10:50,770 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size [2021-11-03 04:10:50,771 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-03 04:10:50,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:50,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:50,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:50,781 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:10:50,783 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-11-03 04:10:50,785 INFO L180 QuantifierPusher]: treesize reduction 10, result has 88.8 percent of original size [2021-11-03 04:10:50,787 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-11-03 04:10:50,789 INFO L180 QuantifierPusher]: treesize reduction 5, result has 94.4 percent of original size [2021-11-03 04:10:50,791 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 04:10:50,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:50,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:50,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:50,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:50,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:50,804 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:10:50,805 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-03 04:10:50,807 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-11-03 04:10:50,808 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:10:50,809 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-11-03 04:10:50,810 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:10:50,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:50,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:50,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:50,821 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.0 percent of original size [2021-11-03 04:10:50,823 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-11-03 04:10:50,825 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.2 percent of original size [2021-11-03 04:10:50,827 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-03 04:10:50,829 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.7 percent of original size [2021-11-03 04:10:50,830 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:10:50,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:50,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:50,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:50,842 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:10:50,843 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-03 04:10:50,844 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-11-03 04:10:50,845 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:10:50,847 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-11-03 04:10:50,849 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:10:50,851 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:10:50,852 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-03 04:10:50,855 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-11-03 04:10:50,856 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:10:50,858 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-11-03 04:10:50,859 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:10:50,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:50,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:50,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:50,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:50,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:50,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:50,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:50,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:50,879 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:10:51,242 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:10:51,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:10:51,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 54 [2021-11-03 04:10:51,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952764428] [2021-11-03 04:10:51,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-11-03 04:10:51,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:10:51,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-11-03 04:10:51,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=590, Invalid=3442, Unknown=0, NotChecked=0, Total=4032 [2021-11-03 04:10:51,246 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand has 56 states, 55 states have (on average 4.581818181818182) internal successors, (252), 55 states have internal predecessors, (252), 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 04:10:52,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:10:52,911 INFO L93 Difference]: Finished difference Result 261 states and 279 transitions. [2021-11-03 04:10:52,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-11-03 04:10:52,911 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 4.581818181818182) internal successors, (252), 55 states have internal predecessors, (252), 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 126 [2021-11-03 04:10:52,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:10:52,913 INFO L225 Difference]: With dead ends: 261 [2021-11-03 04:10:52,913 INFO L226 Difference]: Without dead ends: 260 [2021-11-03 04:10:52,918 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3523 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3597, Invalid=10209, Unknown=0, NotChecked=0, Total=13806 [2021-11-03 04:10:52,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-11-03 04:10:52,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2021-11-03 04:10:52,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 1.0038610038610039) internal successors, (260), 259 states have internal predecessors, (260), 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 04:10:52,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 260 transitions. [2021-11-03 04:10:52,954 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 260 transitions. Word has length 126 [2021-11-03 04:10:52,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:10:52,954 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 260 transitions. [2021-11-03 04:10:52,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 4.581818181818182) internal successors, (252), 55 states have internal predecessors, (252), 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 04:10:52,955 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 260 transitions. [2021-11-03 04:10:52,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-11-03 04:10:52,960 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:10:52,961 INFO L513 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 36, 36, 1, 1] [2021-11-03 04:10:52,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:10:53,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-11-03 04:10:53,177 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:10:53,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:10:53,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1259495397, now seen corresponding path program 4 times [2021-11-03 04:10:53,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:10:53,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031345214] [2021-11-03 04:10:53,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:53,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:10:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:54,283 INFO L134 CoverageAnalysis]: Checked inductivity of 4626 backedges. 0 proven. 4626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:54,283 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:10:54,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031345214] [2021-11-03 04:10:54,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031345214] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:10:54,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352788802] [2021-11-03 04:10:54,284 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-03 04:10:54,284 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:10:54,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:10:54,291 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:10:54,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-03 04:10:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:54,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 57 conjunts are in the unsatisfiable core [2021-11-03 04:10:54,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:10:55,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4626 backedges. 0 proven. 4626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:55,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:10:58,006 INFO L134 CoverageAnalysis]: Checked inductivity of 4626 backedges. 0 proven. 4626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:58,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352788802] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:10:58,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [759502407] [2021-11-03 04:10:58,010 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-03 04:10:58,010 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:10:58,010 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:10:58,011 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:10:58,011 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:10:58,015 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:10:58,016 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-03 04:10:58,020 INFO L180 QuantifierPusher]: treesize reduction 7, result has 82.1 percent of original size [2021-11-03 04:10:58,022 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-03 04:10:58,023 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.0 percent of original size [2021-11-03 04:10:58,024 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-03 04:10:58,025 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size [2021-11-03 04:10:58,026 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-03 04:10:58,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:58,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:58,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:58,039 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:10:58,042 INFO L185 QuantifierPusher]: treesize reduction 6, result has 91.7 percent of original size 66 [2021-11-03 04:10:58,045 INFO L180 QuantifierPusher]: treesize reduction 14, result has 83.7 percent of original size [2021-11-03 04:10:58,047 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:10:58,049 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.9 percent of original size [2021-11-03 04:10:58,050 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-11-03 04:10:58,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:58,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:58,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:58,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:58,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:58,067 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:10:58,068 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-03 04:10:58,071 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-11-03 04:10:58,072 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:10:58,073 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-11-03 04:10:58,076 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:10:58,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:58,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:58,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:58,086 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.0 percent of original size [2021-11-03 04:10:58,089 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-11-03 04:10:58,090 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.2 percent of original size [2021-11-03 04:10:58,092 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-03 04:10:58,094 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.7 percent of original size [2021-11-03 04:10:58,096 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:10:58,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:58,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:58,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:58,106 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:10:58,107 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-03 04:10:58,108 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-11-03 04:10:58,109 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:10:58,113 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-11-03 04:10:58,122 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:10:58,125 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:10:58,126 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-03 04:10:58,128 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-11-03 04:10:58,129 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:10:58,132 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-11-03 04:10:58,133 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:10:58,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:58,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:58,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:58,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:58,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:58,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:58,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:58,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:10:58,151 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:10:58,675 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:10:58,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:10:58,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 112 [2021-11-03 04:10:58,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951090051] [2021-11-03 04:10:58,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2021-11-03 04:10:58,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:10:58,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2021-11-03 04:10:58,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2283, Invalid=12479, Unknown=0, NotChecked=0, Total=14762 [2021-11-03 04:10:58,682 INFO L87 Difference]: Start difference. First operand 260 states and 260 transitions. Second operand has 114 states, 113 states have (on average 4.584070796460177) internal successors, (518), 113 states have internal predecessors, (518), 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 04:11:04,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:11:04,377 INFO L93 Difference]: Finished difference Result 520 states and 556 transitions. [2021-11-03 04:11:04,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-11-03 04:11:04,378 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 113 states have (on average 4.584070796460177) internal successors, (518), 113 states have internal predecessors, (518), 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 259 [2021-11-03 04:11:04,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:11:04,399 INFO L225 Difference]: With dead ends: 520 [2021-11-03 04:11:04,399 INFO L226 Difference]: Without dead ends: 519 [2021-11-03 04:11:04,403 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 941 GetRequests, 711 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13870 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=14679, Invalid=38913, Unknown=0, NotChecked=0, Total=53592 [2021-11-03 04:11:04,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2021-11-03 04:11:04,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 519. [2021-11-03 04:11:04,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 518 states have (on average 1.001930501930502) internal successors, (519), 518 states have internal predecessors, (519), 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 04:11:04,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 519 transitions. [2021-11-03 04:11:04,441 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 519 transitions. Word has length 259 [2021-11-03 04:11:04,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:11:04,442 INFO L470 AbstractCegarLoop]: Abstraction has 519 states and 519 transitions. [2021-11-03 04:11:04,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 113 states have (on average 4.584070796460177) internal successors, (518), 113 states have internal predecessors, (518), 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 04:11:04,443 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 519 transitions. [2021-11-03 04:11:04,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2021-11-03 04:11:04,457 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:11:04,458 INFO L513 BasicCegarLoop]: trace histogram [74, 74, 74, 74, 74, 73, 73, 1, 1] [2021-11-03 04:11:04,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:11:04,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2021-11-03 04:11:04,673 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:11:04,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:11:04,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1537083573, now seen corresponding path program 5 times [2021-11-03 04:11:04,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:11:04,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809474946] [2021-11-03 04:11:04,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:11:04,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:11:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:11:08,354 INFO L134 CoverageAnalysis]: Checked inductivity of 18834 backedges. 0 proven. 18834 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:11:08,355 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:11:08,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809474946] [2021-11-03 04:11:08,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809474946] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:11:08,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337814320] [2021-11-03 04:11:08,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:11:08,355 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:11:08,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:11:08,356 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:11:08,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-03 04:11:08,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-11-03 04:11:08,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:11:08,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-03 04:11:08,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:11:11,780 INFO L134 CoverageAnalysis]: Checked inductivity of 18834 backedges. 4361 proven. 297 refuted. 0 times theorem prover too weak. 14176 trivial. 0 not checked. [2021-11-03 04:11:11,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:11:22,762 INFO L134 CoverageAnalysis]: Checked inductivity of 18834 backedges. 4361 proven. 297 refuted. 0 times theorem prover too weak. 14176 trivial. 0 not checked. [2021-11-03 04:11:22,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337814320] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:11:22,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [114051629] [2021-11-03 04:11:22,764 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-03 04:11:22,764 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:11:22,764 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:11:22,764 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:11:22,764 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:11:22,768 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:11:22,768 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-03 04:11:22,770 INFO L180 QuantifierPusher]: treesize reduction 7, result has 82.1 percent of original size [2021-11-03 04:11:22,771 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-03 04:11:22,771 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.0 percent of original size [2021-11-03 04:11:22,773 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-03 04:11:22,774 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size [2021-11-03 04:11:22,775 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-03 04:11:22,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:11:22,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:11:22,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:11:22,801 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:11:22,804 INFO L185 QuantifierPusher]: treesize reduction 6, result has 91.7 percent of original size 66 [2021-11-03 04:11:22,807 INFO L180 QuantifierPusher]: treesize reduction 14, result has 83.7 percent of original size [2021-11-03 04:11:22,809 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:11:22,811 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.9 percent of original size [2021-11-03 04:11:22,813 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-11-03 04:11:22,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:11:22,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:11:22,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:11:22,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:11:22,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:11:22,827 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:11:22,828 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-03 04:11:22,829 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-11-03 04:11:22,830 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:11:22,832 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-11-03 04:11:22,833 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:11:22,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:11:22,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:11:22,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:11:22,851 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.0 percent of original size [2021-11-03 04:11:22,854 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-11-03 04:11:22,856 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.2 percent of original size [2021-11-03 04:11:22,857 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-03 04:11:22,859 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.7 percent of original size [2021-11-03 04:11:22,861 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-03 04:11:22,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:11:22,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:11:22,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:11:22,873 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:11:22,874 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-03 04:11:22,876 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-11-03 04:11:22,877 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:11:22,878 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-11-03 04:11:22,879 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:11:22,882 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:11:22,887 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-03 04:11:22,890 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-11-03 04:11:22,891 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:11:22,896 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-11-03 04:11:22,897 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:11:22,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:11:22,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:11:22,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:11:22,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:11:22,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:11:22,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:11:22,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:11:22,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:11:22,919 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:11:23,980 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:11:23,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:11:23,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 27, 27] total 164 [2021-11-03 04:11:23,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173724701] [2021-11-03 04:11:23,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 165 states [2021-11-03 04:11:23,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:11:23,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2021-11-03 04:11:23,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3189, Invalid=26567, Unknown=0, NotChecked=0, Total=29756 [2021-11-03 04:11:23,987 INFO L87 Difference]: Start difference. First operand 519 states and 519 transitions. Second operand has 165 states, 164 states have (on average 4.048780487804878) internal successors, (664), 165 states have internal predecessors, (664), 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 04:16:28,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:28,354 INFO L93 Difference]: Finished difference Result 532 states and 533 transitions. [2021-11-03 04:16:28,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 380 states. [2021-11-03 04:16:28,355 INFO L78 Accepts]: Start accepts. Automaton has has 165 states, 164 states have (on average 4.048780487804878) internal successors, (664), 165 states have internal predecessors, (664), 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 518 [2021-11-03 04:16:28,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:28,357 INFO L225 Difference]: With dead ends: 532 [2021-11-03 04:16:28,357 INFO L226 Difference]: Without dead ends: 0 [2021-11-03 04:16:28,378 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2041 GetRequests, 1492 SyntacticMatches, 0 SemanticMatches, 549 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91733 ImplicationChecksByTransitivity, 307.3s TimeCoverageRelationStatistics Valid=60675, Invalid=242375, Unknown=0, NotChecked=0, Total=303050 [2021-11-03 04:16:28,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-03 04:16:28,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-03 04:16:28,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 04:16:28,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-03 04:16:28,379 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 518 [2021-11-03 04:16:28,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:28,379 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-03 04:16:28,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 165 states, 164 states have (on average 4.048780487804878) internal successors, (664), 165 states have internal predecessors, (664), 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 04:16:28,380 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-03 04:16:28,380 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-03 04:16:28,383 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:28,384 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:28,384 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:28,384 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:28,384 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:28,385 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:16:28,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:16:28,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2021-11-03 04:16:28,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-03 04:16:28,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:16:34,946 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2021-11-03 04:16:34,946 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-03 04:16:34,946 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-11-03 04:16:34,947 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2021-11-03 04:16:34,947 INFO L857 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2021-11-03 04:16:34,947 INFO L857 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2021-11-03 04:16:34,947 INFO L857 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2021-11-03 04:16:34,947 INFO L857 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-11-03 04:16:34,947 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2021-11-03 04:16:34,947 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-11-03 04:16:34,947 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-03 04:16:34,948 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2021-11-03 04:16:34,948 INFO L857 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2021-11-03 04:16:34,948 INFO L857 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2021-11-03 04:16:34,948 INFO L853 garLoopResultBuilder]: At program point L22-2(lines 22 27) the Hoare annotation is: (let ((.cse3 (<= ULTIMATE.start_main_~d1old~0 75)) (.cse1 (<= ULTIMATE.start_main_~d1~0 75)) (.cse0 (or (and (= ULTIMATE.start_main_~d1~0 73) (= ULTIMATE.start_main_~d2~0 74) (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648))) (let ((.cse4 (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~d1old~0))) (and (<= 0 .cse4) (<= 75 ULTIMATE.start_main_~d1~0) (<= ULTIMATE.start_main_~d1old~0 2147483646) (<= 73 ULTIMATE.start_main_~d1old~0) (= (+ ULTIMATE.start_main_~d1old~0 1) ULTIMATE.start_main_~d2~0) (<= .cse4 2147483647) (<= ULTIMATE.start_main_~d1~0 2147483647)))))) (or (and .cse0 .cse1 (<= ULTIMATE.start_main_~d1old~0 73)) (let ((.cse2 (* ULTIMATE.start_main_~x~0 (- 1)))) (and (or (and .cse0 (<= ULTIMATE.start_main_~d1old~0 (div (+ 2147483570 .cse2) 2)) (<= 79 ULTIMATE.start_main_~d1~0)) (and (<= (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~d1~0) 2147483570) .cse0 (<= 78 ULTIMATE.start_main_~d2~0))) (< ULTIMATE.start_main_~d1old~0 2147483646) (< ULTIMATE.start_main_~d1~0 2147483646) (< ULTIMATE.start_main_~d1old~0 (+ (div (+ .cse2 (- 7)) 4) (div (+ 4294967290 .cse2) 2) 1)))) (and (<= 77 ULTIMATE.start_main_~d1~0) .cse0 .cse3 (<= ULTIMATE.start_main_~d1~0 77) (<= (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~d2~0) 2147483500)) (and .cse0 .cse3 (<= ULTIMATE.start_main_~x~0 2147483499) (<= 75 ULTIMATE.start_main_~d1old~0) .cse1) (and .cse0 (<= ULTIMATE.start_main_~d1~0 73)))) [2021-11-03 04:16:34,951 INFO L731 BasicCegarLoop]: Path program histogram: [5, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:34,953 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 04:16:34,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:16:34 BoogieIcfgContainer [2021-11-03 04:16:34,983 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 04:16:34,984 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 04:16:34,984 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 04:16:34,984 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 04:16:34,985 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:10:30" (3/4) ... [2021-11-03 04:16:34,989 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-03 04:16:35,000 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-03 04:16:35,000 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-03 04:16:35,001 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-03 04:16:35,023 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((d1 == 73 && d2 == 74) && x <= 2147483647) && 0 <= x + 2147483648) || ((((((0 <= x + d1\old && 75 <= d1) && d1\old <= 2147483646) && 73 <= d1\old) && d1\old + 1 == d2) && x + d1\old <= 2147483647) && d1 <= 2147483647)) && d1 <= 75) && d1\old <= 73) || ((((((((((d1 == 73 && d2 == 74) && x <= 2147483647) && 0 <= x + 2147483648) || ((((((0 <= x + d1\old && 75 <= d1) && d1\old <= 2147483646) && 73 <= d1\old) && d1\old + 1 == d2) && x + d1\old <= 2147483647) && d1 <= 2147483647)) && d1\old <= (2147483570 + x * -1) / 2) && 79 <= d1) || ((x + d1 <= 2147483570 && ((((d1 == 73 && d2 == 74) && x <= 2147483647) && 0 <= x + 2147483648) || ((((((0 <= x + d1\old && 75 <= d1) && d1\old <= 2147483646) && 73 <= d1\old) && d1\old + 1 == d2) && x + d1\old <= 2147483647) && d1 <= 2147483647))) && 78 <= d2)) && d1\old < 2147483646) && d1 < 2147483646) && d1\old < (x * -1 + -7) / 4 + (4294967290 + x * -1) / 2 + 1)) || ((((77 <= d1 && ((((d1 == 73 && d2 == 74) && x <= 2147483647) && 0 <= x + 2147483648) || ((((((0 <= x + d1\old && 75 <= d1) && d1\old <= 2147483646) && 73 <= d1\old) && d1\old + 1 == d2) && x + d1\old <= 2147483647) && d1 <= 2147483647))) && d1\old <= 75) && d1 <= 77) && x + d2 <= 2147483500)) || ((((((((d1 == 73 && d2 == 74) && x <= 2147483647) && 0 <= x + 2147483648) || ((((((0 <= x + d1\old && 75 <= d1) && d1\old <= 2147483646) && 73 <= d1\old) && d1\old + 1 == d2) && x + d1\old <= 2147483647) && d1 <= 2147483647)) && d1\old <= 75) && x <= 2147483499) && 75 <= d1\old) && d1 <= 75)) || (((((d1 == 73 && d2 == 74) && x <= 2147483647) && 0 <= x + 2147483648) || ((((((0 <= x + d1\old && 75 <= d1) && d1\old <= 2147483646) && 73 <= d1\old) && d1\old + 1 == d2) && x + d1\old <= 2147483647) && d1 <= 2147483647)) && d1 <= 73) [2021-11-03 04:16:35,030 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/bin/utaipan-aC7eJsxGYH/witness.graphml [2021-11-03 04:16:35,030 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 04:16:35,031 INFO L168 Benchmark]: Toolchain (without parser) took 365521.79 ms. Allocated memory was 130.0 MB in the beginning and 425.7 MB in the end (delta: 295.7 MB). Free memory was 88.7 MB in the beginning and 92.7 MB in the end (delta: -4.0 MB). Peak memory consumption was 291.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:16:35,032 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 130.0 MB. Free memory was 105.3 MB in the beginning and 105.2 MB in the end (delta: 66.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:16:35,032 INFO L168 Benchmark]: CACSL2BoogieTranslator took 218.25 ms. Allocated memory is still 130.0 MB. Free memory was 88.5 MB in the beginning and 104.3 MB in the end (delta: -15.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 04:16:35,032 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.93 ms. Allocated memory is still 130.0 MB. Free memory was 104.3 MB in the beginning and 102.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:16:35,033 INFO L168 Benchmark]: Boogie Preprocessor took 25.45 ms. Allocated memory is still 130.0 MB. Free memory was 102.9 MB in the beginning and 102.2 MB in the end (delta: 768.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:16:35,033 INFO L168 Benchmark]: RCFGBuilder took 318.31 ms. Allocated memory is still 130.0 MB. Free memory was 102.2 MB in the beginning and 93.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:16:35,033 INFO L168 Benchmark]: TraceAbstraction took 364860.22 ms. Allocated memory was 130.0 MB in the beginning and 425.7 MB in the end (delta: 295.7 MB). Free memory was 92.4 MB in the beginning and 95.9 MB in the end (delta: -3.4 MB). Peak memory consumption was 314.7 MB. Max. memory is 16.1 GB. [2021-11-03 04:16:35,034 INFO L168 Benchmark]: Witness Printer took 46.71 ms. Allocated memory is still 425.7 MB. Free memory was 95.9 MB in the beginning and 92.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:16:35,035 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 130.0 MB. Free memory was 105.3 MB in the beginning and 105.2 MB in the end (delta: 66.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 218.25 ms. Allocated memory is still 130.0 MB. Free memory was 88.5 MB in the beginning and 104.3 MB in the end (delta: -15.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.93 ms. Allocated memory is still 130.0 MB. Free memory was 104.3 MB in the beginning and 102.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.45 ms. Allocated memory is still 130.0 MB. Free memory was 102.9 MB in the beginning and 102.2 MB in the end (delta: 768.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 318.31 ms. Allocated memory is still 130.0 MB. Free memory was 102.2 MB in the beginning and 93.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 364860.22 ms. Allocated memory was 130.0 MB in the beginning and 425.7 MB in the end (delta: 295.7 MB). Free memory was 92.4 MB in the beginning and 95.9 MB in the end (delta: -3.4 MB). Peak memory consumption was 314.7 MB. Max. memory is 16.1 GB. * Witness Printer took 46.71 ms. Allocated memory is still 425.7 MB. Free memory was 95.9 MB in the beginning and 92.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. 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 - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 364.7s, OverallIterations: 14, TraceHistogramMax: 74, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 319.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 93 SDtfs, 8361 SDslu, 307 SDs, 0 SdLazy, 5125 SolverSat, 6054 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4097 GetRequests, 2885 SyntacticMatches, 18 SemanticMatches, 1194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115930 ImplicationChecksByTransitivity, 328.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=519occurred in iteration=13, InterpolantAutomatonStates: 710, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 36 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 76 NumberOfFragments, 352 HoareAnnotationTreeSize, 1 FomulaSimplifications, 1076 FormulaSimplificationTreeSizeReduction, 1.4s HoareSimplificationTime, 1 FomulaSimplificationsInter, 23684 FormulaSimplificationTreeSizeReductionInter, 4.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 28.1s InterpolantComputationTime, 2173 NumberOfCodeBlocks, 1739 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 3213 ConstructedInterpolants, 0 QuantifiedInterpolants, 10461 SizeOfPredicates, 158 NumberOfNonLiveVariables, 1418 ConjunctsInSsa, 190 ConjunctsInUnsatCore, 30 InterpolantComputations, 6 PerfectInterpolantSequences, 37116/74934 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]: 464, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 10, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 45, TOOLS_POST_TIME[ms]: 152, 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: 45, TOOLS_QUANTIFIERELIM_TIME[ms]: 139, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 13, FLUID_QUERY_TIME[ms]: 3, FLUID_QUERIES: 66, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 3, DOMAIN_JOIN_TIME[ms]: 94, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 4, DOMAIN_WIDEN_TIME[ms]: 150, DOMAIN_ISSUBSETEQ_APPLICATIONS: 5, DOMAIN_ISSUBSETEQ_TIME[ms]: 12, DOMAIN_ISBOTTOM_APPLICATIONS: 10, DOMAIN_ISBOTTOM_TIME[ms]: 9, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 290, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 290, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 5, 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]: 2, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 9, DAG_COMPRESSION_PROCESSED_NODES: 91, DAG_COMPRESSION_RETAINED_NODES: 32, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (((((((((d1 == 73 && d2 == 74) && x <= 2147483647) && 0 <= x + 2147483648) || ((((((0 <= x + d1\old && 75 <= d1) && d1\old <= 2147483646) && 73 <= d1\old) && d1\old + 1 == d2) && x + d1\old <= 2147483647) && d1 <= 2147483647)) && d1 <= 75) && d1\old <= 73) || ((((((((((d1 == 73 && d2 == 74) && x <= 2147483647) && 0 <= x + 2147483648) || ((((((0 <= x + d1\old && 75 <= d1) && d1\old <= 2147483646) && 73 <= d1\old) && d1\old + 1 == d2) && x + d1\old <= 2147483647) && d1 <= 2147483647)) && d1\old <= (2147483570 + x * -1) / 2) && 79 <= d1) || ((x + d1 <= 2147483570 && ((((d1 == 73 && d2 == 74) && x <= 2147483647) && 0 <= x + 2147483648) || ((((((0 <= x + d1\old && 75 <= d1) && d1\old <= 2147483646) && 73 <= d1\old) && d1\old + 1 == d2) && x + d1\old <= 2147483647) && d1 <= 2147483647))) && 78 <= d2)) && d1\old < 2147483646) && d1 < 2147483646) && d1\old < (x * -1 + -7) / 4 + (4294967290 + x * -1) / 2 + 1)) || ((((77 <= d1 && ((((d1 == 73 && d2 == 74) && x <= 2147483647) && 0 <= x + 2147483648) || ((((((0 <= x + d1\old && 75 <= d1) && d1\old <= 2147483646) && 73 <= d1\old) && d1\old + 1 == d2) && x + d1\old <= 2147483647) && d1 <= 2147483647))) && d1\old <= 75) && d1 <= 77) && x + d2 <= 2147483500)) || ((((((((d1 == 73 && d2 == 74) && x <= 2147483647) && 0 <= x + 2147483648) || ((((((0 <= x + d1\old && 75 <= d1) && d1\old <= 2147483646) && 73 <= d1\old) && d1\old + 1 == d2) && x + d1\old <= 2147483647) && d1 <= 2147483647)) && d1\old <= 75) && x <= 2147483499) && 75 <= d1\old) && d1 <= 75)) || (((((d1 == 73 && d2 == 74) && x <= 2147483647) && 0 <= x + 2147483648) || ((((((0 <= x + d1\old && 75 <= d1) && d1\old <= 2147483646) && 73 <= d1\old) && d1\old + 1 == d2) && x + d1\old <= 2147483647) && d1 <= 2147483647)) && d1 <= 73) RESULT: Ultimate proved your program to be correct! [2021-11-03 04:16:35,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4178659-fa06-4def-a7e5-fcc9a743f257/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 Writing output log to file Ultimate.log Result: TRUE