./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V --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 9b244382de79ee7e63c5a39dc4ba4645eb8228d285c75cf6df9353c232d1a135 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:15:56,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:15:56,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:15:56,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:15:56,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:15:56,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:15:57,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:15:57,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:15:57,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:15:57,009 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:15:57,010 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:15:57,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:15:57,012 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:15:57,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:15:57,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:15:57,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:15:57,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:15:57,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:15:57,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:15:57,042 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:15:57,044 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:15:57,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:15:57,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:15:57,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:15:57,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:15:57,069 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:15:57,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:15:57,072 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:15:57,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:15:57,078 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:15:57,078 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:15:57,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:15:57,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:15:57,081 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:15:57,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:15:57,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:15:57,084 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:15:57,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:15:57,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:15:57,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:15:57,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:15:57,090 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-23 02:15:57,148 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:15:57,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:15:57,150 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:15:57,150 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:15:57,158 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:15:57,158 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:15:57,159 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:15:57,159 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:15:57,159 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:15:57,160 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:15:57,161 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:15:57,161 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:15:57,162 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:15:57,162 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:15:57,162 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:15:57,162 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:15:57,163 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:15:57,163 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:15:57,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:15:57,164 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 02:15:57,164 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:15:57,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:15:57,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:15:57,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:15:57,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:15:57,166 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-23 02:15:57,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:15:57,168 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:15:57,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:15:57,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:15:57,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:15:57,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:15:57,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:15:57,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:15:57,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:15:57,171 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:15:57,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:15:57,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:15:57,171 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:15:57,172 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:15:57,172 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_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9b244382de79ee7e63c5a39dc4ba4645eb8228d285c75cf6df9353c232d1a135 [2021-11-23 02:15:57,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:15:57,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:15:57,571 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:15:57,572 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:15:57,573 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:15:57,575 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c [2021-11-23 02:15:57,673 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/data/790954233/59f7d679f385432ba6542512811e22b3/FLAGe354c012d [2021-11-23 02:15:58,150 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:15:58,151 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c [2021-11-23 02:15:58,157 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/data/790954233/59f7d679f385432ba6542512811e22b3/FLAGe354c012d [2021-11-23 02:15:58,555 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/data/790954233/59f7d679f385432ba6542512811e22b3 [2021-11-23 02:15:58,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:15:58,560 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:15:58,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:15:58,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:15:58,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:15:58,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:15:58" (1/1) ... [2021-11-23 02:15:58,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57df7891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:58, skipping insertion in model container [2021-11-23 02:15:58,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:15:58" (1/1) ... [2021-11-23 02:15:58,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:15:58,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:15:58,775 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:15:58,779 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:15:58,794 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:15:58,810 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:15:58,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:58 WrapperNode [2021-11-23 02:15:58,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:15:58,812 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:15:58,812 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:15:58,813 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:15:58,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:58" (1/1) ... [2021-11-23 02:15:58,827 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:58" (1/1) ... [2021-11-23 02:15:58,847 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2021-11-23 02:15:58,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:15:58,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:15:58,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:15:58,849 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:15:58,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:58" (1/1) ... [2021-11-23 02:15:58,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:58" (1/1) ... [2021-11-23 02:15:58,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:58" (1/1) ... [2021-11-23 02:15:58,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:58" (1/1) ... [2021-11-23 02:15:58,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:58" (1/1) ... [2021-11-23 02:15:58,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:58" (1/1) ... [2021-11-23 02:15:58,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:58" (1/1) ... [2021-11-23 02:15:58,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:15:58,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:15:58,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:15:58,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:15:58,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:58" (1/1) ... [2021-11-23 02:15:58,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:15:58,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:15:58,912 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:15:58,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:15:58,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:15:58,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:15:59,040 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:15:59,044 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:15:59,233 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:15:59,273 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:15:59,274 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 02:15:59,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:15:59 BoogieIcfgContainer [2021-11-23 02:15:59,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:15:59,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:15:59,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:15:59,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:15:59,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:15:58" (1/3) ... [2021-11-23 02:15:59,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5722d300 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:15:59, skipping insertion in model container [2021-11-23 02:15:59,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:58" (2/3) ... [2021-11-23 02:15:59,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5722d300 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:15:59, skipping insertion in model container [2021-11-23 02:15:59,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:15:59" (3/3) ... [2021-11-23 02:15:59,301 INFO L111 eAbstractionObserver]: Analyzing ICFG Avery-FLOPS2006-Table1.c [2021-11-23 02:15:59,307 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:15:59,317 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-23 02:15:59,378 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:15:59,384 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 [2021-11-23 02:15:59,384 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-23 02:15:59,403 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 21 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) [2021-11-23 02:15:59,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-23 02:15:59,409 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:15:59,410 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-23 02:15:59,410 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:15:59,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:15:59,416 INFO L85 PathProgramCache]: Analyzing trace with hash 2507698, now seen corresponding path program 1 times [2021-11-23 02:15:59,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:15:59,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942319680] [2021-11-23 02:15:59,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:15:59,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:15:59,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:15:59,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:15:59,640 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:15:59,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942319680] [2021-11-23 02:15:59,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942319680] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:15:59,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:15:59,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:15:59,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458474643] [2021-11-23 02:15:59,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:15:59,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:15:59,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:15:59,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:15:59,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:15:59,689 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 21 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) 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) [2021-11-23 02:15:59,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:15:59,819 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2021-11-23 02:15:59,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:15:59,828 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 [2021-11-23 02:15:59,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:15:59,839 INFO L225 Difference]: With dead ends: 38 [2021-11-23 02:15:59,839 INFO L226 Difference]: Without dead ends: 31 [2021-11-23 02:15:59,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:15:59,850 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 24 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:15:59,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 20 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:15:59,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-23 02:15:59,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 19. [2021-11-23 02:15:59,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 18 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) [2021-11-23 02:15:59,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-11-23 02:15:59,892 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 4 [2021-11-23 02:15:59,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:15:59,892 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-11-23 02:15:59,893 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) [2021-11-23 02:15:59,893 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-11-23 02:15:59,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-23 02:15:59,894 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:15:59,894 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-23 02:15:59,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:15:59,895 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:15:59,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:15:59,898 INFO L85 PathProgramCache]: Analyzing trace with hash 77779592, now seen corresponding path program 1 times [2021-11-23 02:15:59,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:15:59,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721114932] [2021-11-23 02:15:59,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:15:59,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:15:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:15:59,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:15:59,951 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:15:59,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721114932] [2021-11-23 02:15:59,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721114932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:15:59,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:15:59,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:15:59,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479499201] [2021-11-23 02:15:59,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:15:59,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:15:59,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:15:59,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:15:59,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:15:59,966 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:16:00,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:00,027 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2021-11-23 02:16:00,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:16:00,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-23 02:16:00,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:00,028 INFO L225 Difference]: With dead ends: 31 [2021-11-23 02:16:00,029 INFO L226 Difference]: Without dead ends: 21 [2021-11-23 02:16:00,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:16:00,037 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:00,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 29 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:16:00,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-23 02:16:00,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-11-23 02:16:00,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 18 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) [2021-11-23 02:16:00,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-11-23 02:16:00,056 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 5 [2021-11-23 02:16:00,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:00,056 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-11-23 02:16:00,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:16:00,057 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-11-23 02:16:00,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 02:16:00,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:00,061 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 02:16:00,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:16:00,062 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:16:00,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:00,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1885067980, now seen corresponding path program 1 times [2021-11-23 02:16:00,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:00,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024124795] [2021-11-23 02:16:00,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:00,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:00,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:00,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:00,105 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:00,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024124795] [2021-11-23 02:16:00,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024124795] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:00,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:00,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-23 02:16:00,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682467900] [2021-11-23 02:16:00,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:00,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:16:00,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:00,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:16:00,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:16:00,111 INFO L87 Difference]: Start difference. First operand 19 states and 20 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) [2021-11-23 02:16:00,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:00,147 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2021-11-23 02:16:00,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:16:00,147 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 [2021-11-23 02:16:00,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:00,149 INFO L225 Difference]: With dead ends: 24 [2021-11-23 02:16:00,149 INFO L226 Difference]: Without dead ends: 23 [2021-11-23 02:16:00,149 INFO L932 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 [2021-11-23 02:16:00,156 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:00,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 22 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:16:00,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-23 02:16:00,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-11-23 02:16:00,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.4375) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:16:00,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-11-23 02:16:00,163 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 6 [2021-11-23 02:16:00,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:00,163 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-11-23 02:16:00,163 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) [2021-11-23 02:16:00,164 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-11-23 02:16:00,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 02:16:00,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:00,164 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:00,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:16:00,165 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:16:00,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:00,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1692434816, now seen corresponding path program 1 times [2021-11-23 02:16:00,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:00,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285104663] [2021-11-23 02:16:00,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:00,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:00,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:00,218 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:00,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285104663] [2021-11-23 02:16:00,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285104663] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:00,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:00,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-23 02:16:00,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370314169] [2021-11-23 02:16:00,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:00,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:16:00,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:00,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:16:00,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:16:00,221 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-11-23 02:16:00,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:00,254 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2021-11-23 02:16:00,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:16:00,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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 [2021-11-23 02:16:00,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:00,261 INFO L225 Difference]: With dead ends: 30 [2021-11-23 02:16:00,262 INFO L226 Difference]: Without dead ends: 28 [2021-11-23 02:16:00,262 INFO L932 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 [2021-11-23 02:16:00,267 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:00,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 15 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:16:00,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-23 02:16:00,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2021-11-23 02:16:00,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:16:00,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2021-11-23 02:16:00,278 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 7 [2021-11-23 02:16:00,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:00,279 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2021-11-23 02:16:00,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-11-23 02:16:00,279 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2021-11-23 02:16:00,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 02:16:00,280 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:00,280 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:00,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:16:00,282 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:16:00,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:00,283 INFO L85 PathProgramCache]: Analyzing trace with hash 704600376, now seen corresponding path program 1 times [2021-11-23 02:16:00,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:00,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125507798] [2021-11-23 02:16:00,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:00,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:00,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:16:00,320 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:00,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125507798] [2021-11-23 02:16:00,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125507798] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:00,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:00,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:16:00,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531519290] [2021-11-23 02:16:00,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:00,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:16:00,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:00,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:16:00,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:16:00,323 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:16:00,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:00,342 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2021-11-23 02:16:00,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:16:00,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-23 02:16:00,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:00,344 INFO L225 Difference]: With dead ends: 27 [2021-11-23 02:16:00,344 INFO L226 Difference]: Without dead ends: 26 [2021-11-23 02:16:00,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:16:00,346 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 2 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:00,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 20 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:16:00,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-23 02:16:00,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-11-23 02:16:00,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.380952380952381) internal successors, (29), 25 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:16:00,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-11-23 02:16:00,352 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 10 [2021-11-23 02:16:00,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:00,352 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-11-23 02:16:00,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:16:00,353 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-11-23 02:16:00,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 02:16:00,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:00,354 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:00,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:16:00,354 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:16:00,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:00,355 INFO L85 PathProgramCache]: Analyzing trace with hash 367775243, now seen corresponding path program 1 times [2021-11-23 02:16:00,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:00,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600899131] [2021-11-23 02:16:00,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:00,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:00,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:00,408 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:00,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600899131] [2021-11-23 02:16:00,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600899131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:00,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:00,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:16:00,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830481341] [2021-11-23 02:16:00,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:00,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:16:00,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:00,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:16:00,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:16:00,413 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:16:00,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:00,456 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-11-23 02:16:00,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:16:00,457 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-23 02:16:00,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:00,458 INFO L225 Difference]: With dead ends: 26 [2021-11-23 02:16:00,459 INFO L226 Difference]: Without dead ends: 25 [2021-11-23 02:16:00,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:16:00,460 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:00,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 14 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:16:00,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-23 02:16:00,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-23 02:16:00,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:16:00,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-11-23 02:16:00,469 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 11 [2021-11-23 02:16:00,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:00,469 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-11-23 02:16:00,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:16:00,470 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-11-23 02:16:00,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 02:16:00,470 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:00,471 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2021-11-23 02:16:00,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:16:00,471 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:16:00,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:00,472 INFO L85 PathProgramCache]: Analyzing trace with hash 366507140, now seen corresponding path program 1 times [2021-11-23 02:16:00,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:00,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262602346] [2021-11-23 02:16:00,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:00,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:00,503 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:00,503 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:00,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262602346] [2021-11-23 02:16:00,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262602346] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:16:00,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695496916] [2021-11-23 02:16:00,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:00,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:16:00,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:16:00,506 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:16:00,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:16:00,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:00,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:16:00,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:00,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:00,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:16:00,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:00,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695496916] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:16:00,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [691791157] [2021-11-23 02:16:00,748 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-23 02:16:00,748 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:16:00,757 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:16:00,764 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:16:00,765 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:16:01,203 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:16:01,601 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '453#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (< 2147483646 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483645) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (< 0 (+ |ULTIMATE.start_main_~i~0#1| 1)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2021-11-23 02:16:01,601 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:16:01,601 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:16:01,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2021-11-23 02:16:01,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235005020] [2021-11-23 02:16:01,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:16:01,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:16:01,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:01,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:16:01,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:16:01,603 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2021-11-23 02:16:01,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:01,674 INFO L93 Difference]: Finished difference Result 69 states and 82 transitions. [2021-11-23 02:16:01,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:16:01,675 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-23 02:16:01,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:01,676 INFO L225 Difference]: With dead ends: 69 [2021-11-23 02:16:01,676 INFO L226 Difference]: Without dead ends: 67 [2021-11-23 02:16:01,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:16:01,678 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 40 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:01,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 40 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:16:01,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-23 02:16:01,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 50. [2021-11-23 02:16:01,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 46 states have (on average 1.2391304347826086) internal successors, (57), 49 states have internal predecessors, (57), 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) [2021-11-23 02:16:01,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2021-11-23 02:16:01,687 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 11 [2021-11-23 02:16:01,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:01,687 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2021-11-23 02:16:01,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2021-11-23 02:16:01,687 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2021-11-23 02:16:01,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 02:16:01,688 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:01,688 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:01,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:16:01,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:16:01,914 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:16:01,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:01,914 INFO L85 PathProgramCache]: Analyzing trace with hash -2146418545, now seen corresponding path program 1 times [2021-11-23 02:16:01,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:01,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671463360] [2021-11-23 02:16:01,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:01,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:01,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:16:01,963 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:01,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671463360] [2021-11-23 02:16:01,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671463360] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:16:01,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634838720] [2021-11-23 02:16:01,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:01,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:16:01,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:16:01,965 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:16:01,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:16:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:02,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:16:02,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:02,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:16:02,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:16:02,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:16:02,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634838720] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:16:02,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1507335745] [2021-11-23 02:16:02,115 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-23 02:16:02,115 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:16:02,116 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:16:02,116 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:16:02,116 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:16:02,427 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:16:02,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1507335745] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:02,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:16:02,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [3, 3, 3] total 14 [2021-11-23 02:16:02,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832185430] [2021-11-23 02:16:02,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:02,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 02:16:02,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:02,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 02:16:02,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-11-23 02:16:02,786 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:16:03,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:03,782 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2021-11-23 02:16:03,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 02:16:03,784 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-23 02:16:03,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:03,785 INFO L225 Difference]: With dead ends: 56 [2021-11-23 02:16:03,785 INFO L226 Difference]: Without dead ends: 54 [2021-11-23 02:16:03,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=139, Invalid=511, Unknown=0, NotChecked=0, Total=650 [2021-11-23 02:16:03,786 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 58 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:03,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 0 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:16:03,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-23 02:16:03,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 38. [2021-11-23 02:16:03,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 37 states have internal predecessors, (42), 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) [2021-11-23 02:16:03,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2021-11-23 02:16:03,802 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 15 [2021-11-23 02:16:03,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:03,802 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2021-11-23 02:16:03,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:16:03,803 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2021-11-23 02:16:03,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 02:16:03,804 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:03,804 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:03,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:16:04,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:16:04,030 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:16:04,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:04,030 INFO L85 PathProgramCache]: Analyzing trace with hash -481704650, now seen corresponding path program 1 times [2021-11-23 02:16:04,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:04,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281695228] [2021-11-23 02:16:04,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:04,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:04,067 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:04,067 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:04,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281695228] [2021-11-23 02:16:04,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281695228] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:16:04,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184425174] [2021-11-23 02:16:04,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:04,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:16:04,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:16:04,069 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:16:04,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:16:04,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:04,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 02:16:04,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:04,157 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:04,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:16:04,216 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:04,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184425174] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:16:04,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1276775711] [2021-11-23 02:16:04,221 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-23 02:16:04,221 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:16:04,222 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:16:04,222 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:16:04,222 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:16:04,457 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:16:04,893 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '921#(and (< (+ 2147483647 |ULTIMATE.start_main_~z~0#1|) 0) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2021-11-23 02:16:04,893 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:16:04,894 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:16:04,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2021-11-23 02:16:04,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251759461] [2021-11-23 02:16:04,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:16:04,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:16:04,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:04,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:16:04,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-11-23 02:16:04,896 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2021-11-23 02:16:04,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:04,923 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2021-11-23 02:16:04,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:16:04,924 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-23 02:16:04,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:04,926 INFO L225 Difference]: With dead ends: 54 [2021-11-23 02:16:04,926 INFO L226 Difference]: Without dead ends: 53 [2021-11-23 02:16:04,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-11-23 02:16:04,927 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 13 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:04,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 27 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:16:04,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-23 02:16:04,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-11-23 02:16:04,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 52 states have internal predecessors, (57), 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) [2021-11-23 02:16:04,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2021-11-23 02:16:04,936 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 18 [2021-11-23 02:16:04,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:04,936 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2021-11-23 02:16:04,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2021-11-23 02:16:04,937 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2021-11-23 02:16:04,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 02:16:04,954 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:04,954 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1] [2021-11-23 02:16:05,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:16:05,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:16:05,169 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:16:05,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:05,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1672464692, now seen corresponding path program 2 times [2021-11-23 02:16:05,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:05,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985650049] [2021-11-23 02:16:05,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:05,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:05,272 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:05,273 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:05,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985650049] [2021-11-23 02:16:05,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985650049] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:16:05,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738290199] [2021-11-23 02:16:05,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 02:16:05,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:16:05,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:16:05,290 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:16:05,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:16:05,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-23 02:16:05,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:16:05,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 02:16:05,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:05,374 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:05,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:16:05,484 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:05,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738290199] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:16:05,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [863566012] [2021-11-23 02:16:05,489 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-23 02:16:05,489 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:16:05,489 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:16:05,490 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:16:05,490 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:16:05,594 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:16:05,924 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1210#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (< 2147483646 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483645) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (< 0 (+ |ULTIMATE.start_main_~i~0#1| 1)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2021-11-23 02:16:05,924 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:16:05,924 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:16:05,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-23 02:16:05,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451881147] [2021-11-23 02:16:05,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:16:05,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 02:16:05,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:05,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 02:16:05,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2021-11-23 02:16:05,926 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 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) [2021-11-23 02:16:06,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:06,045 INFO L93 Difference]: Finished difference Result 229 states and 246 transitions. [2021-11-23 02:16:06,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 02:16:06,048 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-23 02:16:06,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:06,054 INFO L225 Difference]: With dead ends: 229 [2021-11-23 02:16:06,054 INFO L226 Difference]: Without dead ends: 228 [2021-11-23 02:16:06,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 60 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2021-11-23 02:16:06,057 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 105 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:06,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 71 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:16:06,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-11-23 02:16:06,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 83. [2021-11-23 02:16:06,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 81 states have (on average 1.1481481481481481) internal successors, (93), 82 states have internal predecessors, (93), 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) [2021-11-23 02:16:06,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2021-11-23 02:16:06,085 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 26 [2021-11-23 02:16:06,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:06,086 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2021-11-23 02:16:06,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 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) [2021-11-23 02:16:06,086 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2021-11-23 02:16:06,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-23 02:16:06,088 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:06,089 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:06,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:16:06,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 02:16:06,314 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:16:06,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:06,314 INFO L85 PathProgramCache]: Analyzing trace with hash -919616723, now seen corresponding path program 2 times [2021-11-23 02:16:06,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:06,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938123714] [2021-11-23 02:16:06,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:06,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:06,369 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 1 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:06,369 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:06,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938123714] [2021-11-23 02:16:06,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938123714] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:16:06,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559709717] [2021-11-23 02:16:06,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 02:16:06,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:16:06,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:16:06,371 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:16:06,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 02:16:06,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-23 02:16:06,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:16:06,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:16:06,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:06,506 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 1 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:06,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:16:06,618 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 1 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:06,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559709717] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:16:06,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1332793950] [2021-11-23 02:16:06,622 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-23 02:16:06,622 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:16:06,623 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:16:06,623 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:16:06,623 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:16:06,833 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:16:07,240 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1754#(and (< (+ 2147483647 |ULTIMATE.start_main_~z~0#1|) 0) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2021-11-23 02:16:07,240 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:16:07,240 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:16:07,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-23 02:16:07,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88434108] [2021-11-23 02:16:07,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:16:07,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 02:16:07,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:07,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 02:16:07,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2021-11-23 02:16:07,243 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand has 12 states, 11 states have (on average 6.0) internal successors, (66), 11 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) [2021-11-23 02:16:07,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:07,312 INFO L93 Difference]: Finished difference Result 114 states and 129 transitions. [2021-11-23 02:16:07,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 02:16:07,313 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.0) internal successors, (66), 11 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) Word has length 33 [2021-11-23 02:16:07,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:07,315 INFO L225 Difference]: With dead ends: 114 [2021-11-23 02:16:07,315 INFO L226 Difference]: Without dead ends: 113 [2021-11-23 02:16:07,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 78 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2021-11-23 02:16:07,317 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 19 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:07,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 45 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:16:07,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-11-23 02:16:07,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-11-23 02:16:07,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 111 states have (on average 1.1081081081081081) internal successors, (123), 112 states have internal predecessors, (123), 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) [2021-11-23 02:16:07,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 123 transitions. [2021-11-23 02:16:07,328 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 123 transitions. Word has length 33 [2021-11-23 02:16:07,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:07,329 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 123 transitions. [2021-11-23 02:16:07,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.0) internal successors, (66), 11 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) [2021-11-23 02:16:07,329 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 123 transitions. [2021-11-23 02:16:07,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-23 02:16:07,332 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:07,332 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1] [2021-11-23 02:16:07,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 02:16:07,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-23 02:16:07,546 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:16:07,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:07,546 INFO L85 PathProgramCache]: Analyzing trace with hash 996441908, now seen corresponding path program 3 times [2021-11-23 02:16:07,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:07,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223416498] [2021-11-23 02:16:07,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:07,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:07,693 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:07,693 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:07,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223416498] [2021-11-23 02:16:07,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223416498] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:16:07,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925596574] [2021-11-23 02:16:07,694 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 02:16:07,694 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:16:07,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:16:07,696 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:16:07,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 02:16:07,745 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 02:16:07,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:16:07,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 02:16:07,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:07,877 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:07,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:16:08,245 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:08,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925596574] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:16:08,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [93381674] [2021-11-23 02:16:08,248 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-23 02:16:08,248 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:16:08,248 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:16:08,249 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:16:08,249 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:16:08,386 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:16:08,979 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2367#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (< 2147483646 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483645) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (< 0 (+ |ULTIMATE.start_main_~i~0#1| 1)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2021-11-23 02:16:08,980 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:16:08,980 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:16:08,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2021-11-23 02:16:08,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043862201] [2021-11-23 02:16:08,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:16:08,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-23 02:16:08,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:08,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-23 02:16:08,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=555, Unknown=0, NotChecked=0, Total=870 [2021-11-23 02:16:08,982 INFO L87 Difference]: Start difference. First operand 113 states and 123 transitions. Second operand has 24 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 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) [2021-11-23 02:16:09,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:09,198 INFO L93 Difference]: Finished difference Result 829 states and 864 transitions. [2021-11-23 02:16:09,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-23 02:16:09,199 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 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 56 [2021-11-23 02:16:09,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:09,204 INFO L225 Difference]: With dead ends: 829 [2021-11-23 02:16:09,204 INFO L226 Difference]: Without dead ends: 828 [2021-11-23 02:16:09,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 138 SyntacticMatches, 11 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=315, Invalid=555, Unknown=0, NotChecked=0, Total=870 [2021-11-23 02:16:09,207 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 372 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:09,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 143 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:16:09,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2021-11-23 02:16:09,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 173. [2021-11-23 02:16:09,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 171 states have (on average 1.1403508771929824) internal successors, (195), 172 states have internal predecessors, (195), 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) [2021-11-23 02:16:09,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 195 transitions. [2021-11-23 02:16:09,226 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 195 transitions. Word has length 56 [2021-11-23 02:16:09,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:09,226 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 195 transitions. [2021-11-23 02:16:09,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 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) [2021-11-23 02:16:09,227 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 195 transitions. [2021-11-23 02:16:09,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-23 02:16:09,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:09,229 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:09,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 02:16:09,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:16:09,450 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:16:09,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:09,450 INFO L85 PathProgramCache]: Analyzing trace with hash 173255693, now seen corresponding path program 3 times [2021-11-23 02:16:09,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:09,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220941325] [2021-11-23 02:16:09,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:09,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:09,570 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 1 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:09,571 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:09,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220941325] [2021-11-23 02:16:09,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220941325] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:16:09,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157841410] [2021-11-23 02:16:09,571 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 02:16:09,572 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:16:09,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:16:09,578 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:16:09,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 02:16:09,622 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 02:16:09,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:16:09,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 02:16:09,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:09,782 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 1 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:09,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:16:10,115 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 1 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:10,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157841410] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:16:10,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1170228815] [2021-11-23 02:16:10,118 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-23 02:16:10,118 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:16:10,118 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:16:10,118 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:16:10,118 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:16:10,302 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:16:10,868 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3817#(and (< (+ 2147483647 |ULTIMATE.start_main_~z~0#1|) 0) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2021-11-23 02:16:10,868 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:16:10,868 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:16:10,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2021-11-23 02:16:10,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041774284] [2021-11-23 02:16:10,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:16:10,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-23 02:16:10,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:10,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-23 02:16:10,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=409, Invalid=713, Unknown=0, NotChecked=0, Total=1122 [2021-11-23 02:16:10,871 INFO L87 Difference]: Start difference. First operand 173 states and 195 transitions. Second operand has 24 states, 23 states have (on average 5.478260869565218) internal successors, (126), 23 states have internal predecessors, (126), 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) [2021-11-23 02:16:10,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:10,976 INFO L93 Difference]: Finished difference Result 234 states and 267 transitions. [2021-11-23 02:16:10,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-23 02:16:10,977 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.478260869565218) internal successors, (126), 23 states have internal predecessors, (126), 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 [2021-11-23 02:16:10,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:10,980 INFO L225 Difference]: With dead ends: 234 [2021-11-23 02:16:10,980 INFO L226 Difference]: Without dead ends: 233 [2021-11-23 02:16:10,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 156 SyntacticMatches, 11 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=409, Invalid=713, Unknown=0, NotChecked=0, Total=1122 [2021-11-23 02:16:10,986 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 25 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:10,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 81 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:16:10,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-11-23 02:16:10,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2021-11-23 02:16:10,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 231 states have (on average 1.103896103896104) internal successors, (255), 232 states have internal predecessors, (255), 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) [2021-11-23 02:16:11,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 255 transitions. [2021-11-23 02:16:11,002 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 255 transitions. Word has length 63 [2021-11-23 02:16:11,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:11,005 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 255 transitions. [2021-11-23 02:16:11,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.478260869565218) internal successors, (126), 23 states have internal predecessors, (126), 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) [2021-11-23 02:16:11,005 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 255 transitions. [2021-11-23 02:16:11,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-23 02:16:11,015 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:11,015 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1] [2021-11-23 02:16:11,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-23 02:16:11,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-23 02:16:11,237 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:16:11,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:11,238 INFO L85 PathProgramCache]: Analyzing trace with hash -263820492, now seen corresponding path program 4 times [2021-11-23 02:16:11,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:11,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465787182] [2021-11-23 02:16:11,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:11,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:11,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:11,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:11,608 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:11,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465787182] [2021-11-23 02:16:11,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465787182] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:16:11,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745069726] [2021-11-23 02:16:11,609 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-23 02:16:11,609 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:16:11,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:16:11,610 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:16:11,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 02:16:11,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:11,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-23 02:16:11,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:11,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:11,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:16:12,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:12,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745069726] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:16:12,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [725703620] [2021-11-23 02:16:12,902 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-23 02:16:12,903 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:16:12,903 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:16:12,903 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:16:12,904 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:16:13,009 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:16:13,989 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5078#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (< 2147483646 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483645) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (< 0 (+ |ULTIMATE.start_main_~i~0#1| 1)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2021-11-23 02:16:13,989 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:16:13,989 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:16:13,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2021-11-23 02:16:13,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133332506] [2021-11-23 02:16:13,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:16:13,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-23 02:16:13,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:13,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-23 02:16:13,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1191, Invalid=1671, Unknown=0, NotChecked=0, Total=2862 [2021-11-23 02:16:13,994 INFO L87 Difference]: Start difference. First operand 233 states and 255 transitions. Second operand has 48 states, 47 states have (on average 4.9361702127659575) internal successors, (232), 47 states have internal predecessors, (232), 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) [2021-11-23 02:16:14,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:14,610 INFO L93 Difference]: Finished difference Result 3109 states and 3180 transitions. [2021-11-23 02:16:14,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-23 02:16:14,611 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.9361702127659575) internal successors, (232), 47 states have internal predecessors, (232), 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 116 [2021-11-23 02:16:14,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:14,628 INFO L225 Difference]: With dead ends: 3109 [2021-11-23 02:16:14,628 INFO L226 Difference]: Without dead ends: 3108 [2021-11-23 02:16:14,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 294 SyntacticMatches, 23 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2063 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1191, Invalid=1671, Unknown=0, NotChecked=0, Total=2862 [2021-11-23 02:16:14,633 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 864 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:14,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [864 Valid, 287 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 02:16:14,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3108 states. [2021-11-23 02:16:14,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3108 to 353. [2021-11-23 02:16:14,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 351 states have (on average 1.1367521367521367) internal successors, (399), 352 states have internal predecessors, (399), 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) [2021-11-23 02:16:14,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 399 transitions. [2021-11-23 02:16:14,679 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 399 transitions. Word has length 116 [2021-11-23 02:16:14,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:14,680 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 399 transitions. [2021-11-23 02:16:14,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.9361702127659575) internal successors, (232), 47 states have internal predecessors, (232), 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) [2021-11-23 02:16:14,680 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 399 transitions. [2021-11-23 02:16:14,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-23 02:16:14,682 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:14,682 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:14,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-23 02:16:14,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-23 02:16:14,906 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:16:14,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:14,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1603983923, now seen corresponding path program 4 times [2021-11-23 02:16:14,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:14,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329775820] [2021-11-23 02:16:14,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:14,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:15,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 1 proven. 1265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:15,309 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:15,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329775820] [2021-11-23 02:16:15,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329775820] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:16:15,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400075377] [2021-11-23 02:16:15,310 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-23 02:16:15,310 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:16:15,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:16:15,314 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:16:15,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-23 02:16:15,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:15,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-23 02:16:15,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:15,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 1 proven. 1265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:15,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:16:16,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 1 proven. 1265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:16,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400075377] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:16:16,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [213483180] [2021-11-23 02:16:16,701 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-23 02:16:16,701 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:16:16,702 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:16:16,702 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:16:16,702 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:16:16,876 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:16:18,195 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9420#(and (< (+ 2147483647 |ULTIMATE.start_main_~z~0#1|) 0) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2021-11-23 02:16:18,195 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:16:18,195 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:16:18,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2021-11-23 02:16:18,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178072626] [2021-11-23 02:16:18,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:16:18,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-23 02:16:18,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:18,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-23 02:16:18,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1381, Invalid=1925, Unknown=0, NotChecked=0, Total=3306 [2021-11-23 02:16:18,199 INFO L87 Difference]: Start difference. First operand 353 states and 399 transitions. Second operand has 48 states, 47 states have (on average 5.23404255319149) internal successors, (246), 47 states have internal predecessors, (246), 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) [2021-11-23 02:16:18,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:18,382 INFO L93 Difference]: Finished difference Result 474 states and 543 transitions. [2021-11-23 02:16:18,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-23 02:16:18,382 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.23404255319149) internal successors, (246), 47 states have internal predecessors, (246), 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 123 [2021-11-23 02:16:18,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:18,385 INFO L225 Difference]: With dead ends: 474 [2021-11-23 02:16:18,385 INFO L226 Difference]: Without dead ends: 473 [2021-11-23 02:16:18,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 312 SyntacticMatches, 23 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2588 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1381, Invalid=1925, Unknown=0, NotChecked=0, Total=3306 [2021-11-23 02:16:18,388 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 32 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:18,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 153 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:16:18,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2021-11-23 02:16:18,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2021-11-23 02:16:18,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 471 states have (on average 1.1019108280254777) internal successors, (519), 472 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) [2021-11-23 02:16:18,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 519 transitions. [2021-11-23 02:16:18,405 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 519 transitions. Word has length 123 [2021-11-23 02:16:18,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:18,406 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 519 transitions. [2021-11-23 02:16:18,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.23404255319149) internal successors, (246), 47 states have internal predecessors, (246), 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) [2021-11-23 02:16:18,407 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 519 transitions. [2021-11-23 02:16:18,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-11-23 02:16:18,409 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:18,409 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1, 1] [2021-11-23 02:16:18,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-23 02:16:18,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-23 02:16:18,618 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:16:18,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:18,618 INFO L85 PathProgramCache]: Analyzing trace with hash -697547980, now seen corresponding path program 5 times [2021-11-23 02:16:18,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:18,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522794503] [2021-11-23 02:16:18,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:18,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:19,869 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:19,869 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:19,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522794503] [2021-11-23 02:16:19,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522794503] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:16:19,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191974210] [2021-11-23 02:16:19,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 02:16:19,870 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:16:19,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:16:19,871 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:16:19,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-23 02:16:19,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2021-11-23 02:16:19,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:16:19,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-23 02:16:20,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:20,516 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:20,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:16:23,302 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:23,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191974210] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:16:23,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [725139193] [2021-11-23 02:16:23,303 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-23 02:16:23,304 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:16:23,304 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:16:23,304 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:16:23,304 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:16:23,430 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:16:25,853 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11977#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (< 2147483646 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483645) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (< 0 (+ |ULTIMATE.start_main_~i~0#1| 1)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2021-11-23 02:16:25,853 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:16:25,854 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:16:25,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2021-11-23 02:16:25,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547746366] [2021-11-23 02:16:25,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:16:25,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-11-23 02:16:25,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:25,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-11-23 02:16:25,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4671, Invalid=5631, Unknown=0, NotChecked=0, Total=10302 [2021-11-23 02:16:25,862 INFO L87 Difference]: Start difference. First operand 473 states and 519 transitions. Second operand has 96 states, 95 states have (on average 4.968421052631579) internal successors, (472), 95 states have internal predecessors, (472), 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) [2021-11-23 02:16:28,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:28,631 INFO L93 Difference]: Finished difference Result 11989 states and 12132 transitions. [2021-11-23 02:16:28,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-11-23 02:16:28,632 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 4.968421052631579) internal successors, (472), 95 states have internal predecessors, (472), 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 236 [2021-11-23 02:16:28,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:28,692 INFO L225 Difference]: With dead ends: 11989 [2021-11-23 02:16:28,693 INFO L226 Difference]: Without dead ends: 11988 [2021-11-23 02:16:28,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 606 SyntacticMatches, 47 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7607 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=4671, Invalid=5631, Unknown=0, NotChecked=0, Total=10302 [2021-11-23 02:16:28,705 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 1855 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1855 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:28,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1855 Valid, 575 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [412 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 02:16:28,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11988 states. [2021-11-23 02:16:28,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11988 to 713. [2021-11-23 02:16:28,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 711 states have (on average 1.1350210970464134) internal successors, (807), 712 states have internal predecessors, (807), 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) [2021-11-23 02:16:28,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 807 transitions. [2021-11-23 02:16:28,834 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 807 transitions. Word has length 236 [2021-11-23 02:16:28,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:28,835 INFO L470 AbstractCegarLoop]: Abstraction has 713 states and 807 transitions. [2021-11-23 02:16:28,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 4.968421052631579) internal successors, (472), 95 states have internal predecessors, (472), 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) [2021-11-23 02:16:28,836 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 807 transitions. [2021-11-23 02:16:28,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-11-23 02:16:28,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:28,840 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:28,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-23 02:16:29,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-23 02:16:29,054 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:16:29,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:29,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1337375053, now seen corresponding path program 5 times [2021-11-23 02:16:29,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:29,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116599762] [2021-11-23 02:16:29,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:29,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:30,375 INFO L134 CoverageAnalysis]: Checked inductivity of 5406 backedges. 1 proven. 5405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:30,375 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:30,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116599762] [2021-11-23 02:16:30,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116599762] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:16:30,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342745594] [2021-11-23 02:16:30,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 02:16:30,377 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:16:30,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:16:30,382 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:16:30,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-23 02:16:30,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2021-11-23 02:16:30,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:16:30,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-23 02:16:30,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:31,127 INFO L134 CoverageAnalysis]: Checked inductivity of 5406 backedges. 1 proven. 5405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:31,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:16:34,055 INFO L134 CoverageAnalysis]: Checked inductivity of 5406 backedges. 1 proven. 5405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:34,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342745594] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:16:34,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [576060785] [2021-11-23 02:16:34,058 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-23 02:16:34,058 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:16:34,059 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:16:34,059 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:16:34,059 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:16:34,241 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:16:36,673 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '26423#(and (< (+ 2147483647 |ULTIMATE.start_main_~z~0#1|) 0) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2021-11-23 02:16:36,673 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:16:36,673 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:16:36,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2021-11-23 02:16:36,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719363964] [2021-11-23 02:16:36,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:16:36,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-11-23 02:16:36,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:36,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-11-23 02:16:36,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5053, Invalid=6077, Unknown=0, NotChecked=0, Total=11130 [2021-11-23 02:16:36,680 INFO L87 Difference]: Start difference. First operand 713 states and 807 transitions. Second operand has 96 states, 95 states have (on average 5.11578947368421) internal successors, (486), 95 states have internal predecessors, (486), 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) [2021-11-23 02:16:37,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:37,076 INFO L93 Difference]: Finished difference Result 954 states and 1095 transitions. [2021-11-23 02:16:37,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-11-23 02:16:37,077 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 5.11578947368421) internal successors, (486), 95 states have internal predecessors, (486), 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 243 [2021-11-23 02:16:37,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:37,083 INFO L225 Difference]: With dead ends: 954 [2021-11-23 02:16:37,083 INFO L226 Difference]: Without dead ends: 953 [2021-11-23 02:16:37,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 775 GetRequests, 624 SyntacticMatches, 47 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8684 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=5053, Invalid=6077, Unknown=0, NotChecked=0, Total=11130 [2021-11-23 02:16:37,090 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 24 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:37,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 297 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:16:37,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2021-11-23 02:16:37,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 953. [2021-11-23 02:16:37,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 953 states, 951 states have (on average 1.1009463722397477) internal successors, (1047), 952 states have internal predecessors, (1047), 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) [2021-11-23 02:16:37,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1047 transitions. [2021-11-23 02:16:37,127 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1047 transitions. Word has length 243 [2021-11-23 02:16:37,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:37,128 INFO L470 AbstractCegarLoop]: Abstraction has 953 states and 1047 transitions. [2021-11-23 02:16:37,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 5.11578947368421) internal successors, (486), 95 states have internal predecessors, (486), 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) [2021-11-23 02:16:37,129 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1047 transitions. [2021-11-23 02:16:37,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2021-11-23 02:16:37,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:37,142 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 95, 94, 94, 1, 1, 1] [2021-11-23 02:16:37,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-23 02:16:37,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-23 02:16:37,362 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:16:37,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:37,363 INFO L85 PathProgramCache]: Analyzing trace with hash -2009074892, now seen corresponding path program 6 times [2021-11-23 02:16:37,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:37,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445141204] [2021-11-23 02:16:37,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:37,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:37,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:40,950 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:40,950 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:40,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445141204] [2021-11-23 02:16:40,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445141204] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:16:40,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126258838] [2021-11-23 02:16:40,951 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 02:16:40,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:16:40,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:16:40,956 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:16:40,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-23 02:16:41,110 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 02:16:41,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:16:41,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 864 conjuncts, 96 conjunts are in the unsatisfiable core [2021-11-23 02:16:41,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:42,106 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:42,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:16:51,834 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:51,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126258838] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:16:51,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2011007772] [2021-11-23 02:16:51,836 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-23 02:16:51,837 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:16:51,837 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:16:51,837 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:16:51,837 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:16:51,934 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:16:59,641 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '31572#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (< 2147483646 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483645) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (< 0 (+ |ULTIMATE.start_main_~i~0#1| 1)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2021-11-23 02:16:59,641 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:16:59,641 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:16:59,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2021-11-23 02:16:59,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53558172] [2021-11-23 02:16:59,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:16:59,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-11-23 02:16:59,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:59,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-11-23 02:16:59,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18543, Invalid=20463, Unknown=0, NotChecked=0, Total=39006 [2021-11-23 02:16:59,653 INFO L87 Difference]: Start difference. First operand 953 states and 1047 transitions. Second operand has 192 states, 191 states have (on average 4.984293193717278) internal successors, (952), 191 states have internal predecessors, (952), 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) [2021-11-23 02:17:21,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:17:21,117 INFO L93 Difference]: Finished difference Result 47029 states and 47316 transitions. [2021-11-23 02:17:21,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-11-23 02:17:21,118 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 4.984293193717278) internal successors, (952), 191 states have internal predecessors, (952), 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 476 [2021-11-23 02:17:21,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:17:21,239 INFO L225 Difference]: With dead ends: 47029 [2021-11-23 02:17:21,240 INFO L226 Difference]: Without dead ends: 47028 [2021-11-23 02:17:21,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1521 GetRequests, 1230 SyntacticMatches, 95 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29063 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=18543, Invalid=20463, Unknown=0, NotChecked=0, Total=39006 [2021-11-23 02:17:21,281 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 4405 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 951 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4405 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 1918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 951 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:17:21,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4405 Valid, 1151 Invalid, 1918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [951 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-23 02:17:21,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47028 states. [2021-11-23 02:17:21,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47028 to 1433. [2021-11-23 02:17:21,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1433 states, 1431 states have (on average 1.1341719077568133) internal successors, (1623), 1432 states have internal predecessors, (1623), 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) [2021-11-23 02:17:21,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 1623 transitions. [2021-11-23 02:17:21,595 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 1623 transitions. Word has length 476 [2021-11-23 02:17:21,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:17:21,597 INFO L470 AbstractCegarLoop]: Abstraction has 1433 states and 1623 transitions. [2021-11-23 02:17:21,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 4.984293193717278) internal successors, (952), 191 states have internal predecessors, (952), 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) [2021-11-23 02:17:21,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 1623 transitions. [2021-11-23 02:17:21,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2021-11-23 02:17:21,609 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:21,610 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 95, 95, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:17:21,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-11-23 02:17:21,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-23 02:17:21,834 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:17:21,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:21,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1465147469, now seen corresponding path program 6 times [2021-11-23 02:17:21,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:17:21,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710691008] [2021-11-23 02:17:21,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:21,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:17:21,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:25,787 INFO L134 CoverageAnalysis]: Checked inductivity of 22326 backedges. 1 proven. 22325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:17:25,788 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:17:25,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710691008] [2021-11-23 02:17:25,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710691008] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:17:25,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984847092] [2021-11-23 02:17:25,789 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 02:17:25,789 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:17:25,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:17:25,799 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:17:25,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-23 02:17:25,979 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 02:17:25,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:17:25,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 875 conjuncts, 97 conjunts are in the unsatisfiable core [2021-11-23 02:17:25,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:17:26,933 INFO L134 CoverageAnalysis]: Checked inductivity of 22326 backedges. 1 proven. 22325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:17:26,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:17:37,670 INFO L134 CoverageAnalysis]: Checked inductivity of 22326 backedges. 1 proven. 22325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:17:37,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984847092] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:17:37,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1648705898] [2021-11-23 02:17:37,673 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-23 02:17:37,673 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:17:37,673 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:17:37,673 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:17:37,674 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:17:37,821 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:17:46,032 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '83506#(and (< (+ 2147483647 |ULTIMATE.start_main_~z~0#1|) 0) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2021-11-23 02:17:46,032 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:17:46,032 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:17:46,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2021-11-23 02:17:46,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886554600] [2021-11-23 02:17:46,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:17:46,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-11-23 02:17:46,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:17:46,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-11-23 02:17:46,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19309, Invalid=21293, Unknown=0, NotChecked=0, Total=40602 [2021-11-23 02:17:46,044 INFO L87 Difference]: Start difference. First operand 1433 states and 1623 transitions. Second operand has 192 states, 191 states have (on average 5.057591623036649) internal successors, (966), 191 states have internal predecessors, (966), 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) [2021-11-23 02:17:47,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:17:47,432 INFO L93 Difference]: Finished difference Result 1914 states and 2199 transitions. [2021-11-23 02:17:47,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-11-23 02:17:47,433 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 5.057591623036649) internal successors, (966), 191 states have internal predecessors, (966), 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 483 [2021-11-23 02:17:47,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:17:47,439 INFO L225 Difference]: With dead ends: 1914 [2021-11-23 02:17:47,439 INFO L226 Difference]: Without dead ends: 1913 [2021-11-23 02:17:47,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1543 GetRequests, 1248 SyntacticMatches, 95 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31244 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=19309, Invalid=21293, Unknown=0, NotChecked=0, Total=40602 [2021-11-23 02:17:47,444 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 38 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:17:47,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 585 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 02:17:47,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913 states. [2021-11-23 02:17:47,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 1913. [2021-11-23 02:17:47,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1913 states, 1911 states have (on average 1.1004709576138147) internal successors, (2103), 1912 states have internal predecessors, (2103), 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) [2021-11-23 02:17:47,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1913 states to 1913 states and 2103 transitions. [2021-11-23 02:17:47,504 INFO L78 Accepts]: Start accepts. Automaton has 1913 states and 2103 transitions. Word has length 483 [2021-11-23 02:17:47,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:17:47,505 INFO L470 AbstractCegarLoop]: Abstraction has 1913 states and 2103 transitions. [2021-11-23 02:17:47,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 5.057591623036649) internal successors, (966), 191 states have internal predecessors, (966), 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) [2021-11-23 02:17:47,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1913 states and 2103 transitions. [2021-11-23 02:17:47,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 957 [2021-11-23 02:17:47,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:47,548 INFO L514 BasicCegarLoop]: trace histogram [191, 191, 191, 190, 190, 1, 1, 1] [2021-11-23 02:17:47,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-23 02:17:47,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:17:47,774 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:17:47,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:47,774 INFO L85 PathProgramCache]: Analyzing trace with hash 570905396, now seen corresponding path program 7 times [2021-11-23 02:17:47,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:17:47,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278115257] [2021-11-23 02:17:47,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:47,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:17:48,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:18:01,499 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:18:01,499 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:18:01,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278115257] [2021-11-23 02:18:01,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278115257] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:18:01,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595141157] [2021-11-23 02:18:01,499 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-23 02:18:01,499 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:18:01,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:18:01,500 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:18:01,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-23 02:18:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:18:01,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 1728 conjuncts, 192 conjunts are in the unsatisfiable core [2021-11-23 02:18:01,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:18:03,759 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:18:03,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:18:39,827 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:18:39,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595141157] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:18:39,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [406824297] [2021-11-23 02:18:39,829 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-23 02:18:39,829 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:18:39,829 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:18:39,829 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:18:39,830 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:18:39,894 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:19:05,408 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '93839#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (< 2147483646 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483645) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (< 0 (+ |ULTIMATE.start_main_~i~0#1| 1)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2021-11-23 02:19:05,409 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:19:05,409 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:19:05,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 382 [2021-11-23 02:19:05,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311484665] [2021-11-23 02:19:05,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:19:05,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2021-11-23 02:19:05,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:19:05,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2021-11-23 02:19:05,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73935, Invalid=77775, Unknown=0, NotChecked=0, Total=151710 [2021-11-23 02:19:05,431 INFO L87 Difference]: Start difference. First operand 1913 states and 2103 transitions. Second operand has 384 states, 383 states have (on average 4.992167101827676) internal successors, (1912), 383 states have internal predecessors, (1912), 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) [2021-11-23 02:24:31,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:24:31,754 INFO L93 Difference]: Finished difference Result 186229 states and 186804 transitions. [2021-11-23 02:24:31,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2021-11-23 02:24:31,756 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 4.992167101827676) internal successors, (1912), 383 states have internal predecessors, (1912), 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 956 [2021-11-23 02:24:31,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:24:32,046 INFO L225 Difference]: With dead ends: 186229 [2021-11-23 02:24:32,046 INFO L226 Difference]: Without dead ends: 186228 [2021-11-23 02:24:32,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3057 GetRequests, 2478 SyntacticMatches, 191 SemanticMatches, 388 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113447 ImplicationChecksByTransitivity, 72.6s TimeCoverageRelationStatistics Valid=73935, Invalid=77775, Unknown=0, NotChecked=0, Total=151710 [2021-11-23 02:24:32,101 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 9989 mSDsluCounter, 2674 mSDsCounter, 0 mSdLazyCounter, 1928 mSolverCounterSat, 2125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9989 SdHoareTripleChecker+Valid, 2303 SdHoareTripleChecker+Invalid, 4053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2125 IncrementalHoareTripleChecker+Valid, 1928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:24:32,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9989 Valid, 2303 Invalid, 4053 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2125 Valid, 1928 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-23 02:24:32,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186228 states. [2021-11-23 02:24:33,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186228 to 2873. [2021-11-23 02:24:33,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2873 states, 2871 states have (on average 1.1337513061650992) internal successors, (3255), 2872 states have internal predecessors, (3255), 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) [2021-11-23 02:24:33,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 3255 transitions. [2021-11-23 02:24:33,579 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 3255 transitions. Word has length 956 [2021-11-23 02:24:33,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:24:33,581 INFO L470 AbstractCegarLoop]: Abstraction has 2873 states and 3255 transitions. [2021-11-23 02:24:33,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 4.992167101827676) internal successors, (1912), 383 states have internal predecessors, (1912), 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) [2021-11-23 02:24:33,583 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 3255 transitions. [2021-11-23 02:24:33,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 964 [2021-11-23 02:24:33,632 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:24:33,633 INFO L514 BasicCegarLoop]: trace histogram [191, 191, 191, 191, 190, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:24:33,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-23 02:24:33,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:24:33,846 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:24:33,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:24:33,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1401311667, now seen corresponding path program 7 times [2021-11-23 02:24:33,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:24:33,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008381712] [2021-11-23 02:24:33,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:24:33,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:24:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:24:47,565 INFO L134 CoverageAnalysis]: Checked inductivity of 90726 backedges. 1 proven. 90725 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:24:47,565 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:24:47,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008381712] [2021-11-23 02:24:47,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008381712] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:24:47,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063620194] [2021-11-23 02:24:47,566 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-23 02:24:47,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:24:47,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:24:47,566 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:24:47,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-23 02:24:47,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:24:47,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 193 conjunts are in the unsatisfiable core [2021-11-23 02:24:47,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:24:49,632 INFO L134 CoverageAnalysis]: Checked inductivity of 90726 backedges. 1 proven. 90725 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:24:49,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:25:27,847 INFO L134 CoverageAnalysis]: Checked inductivity of 90726 backedges. 1 proven. 90725 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:25:27,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063620194] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:25:27,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1611574276] [2021-11-23 02:25:27,849 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-23 02:25:27,849 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:25:27,850 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:25:27,850 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:25:27,850 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:25:27,958 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:25:58,087 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '289869#(and (< (+ 2147483647 |ULTIMATE.start_main_~z~0#1|) 0) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2021-11-23 02:25:58,087 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:25:58,088 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:25:58,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 382 [2021-11-23 02:25:58,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273213711] [2021-11-23 02:25:58,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:25:58,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2021-11-23 02:25:58,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:25:58,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2021-11-23 02:25:58,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75469, Invalid=79373, Unknown=0, NotChecked=0, Total=154842 [2021-11-23 02:25:58,110 INFO L87 Difference]: Start difference. First operand 2873 states and 3255 transitions. Second operand has 384 states, 383 states have (on average 5.028720626631854) internal successors, (1926), 383 states have internal predecessors, (1926), 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) [2021-11-23 02:26:07,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:07,268 INFO L93 Difference]: Finished difference Result 3834 states and 4407 transitions. [2021-11-23 02:26:07,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2021-11-23 02:26:07,270 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 5.028720626631854) internal successors, (1926), 383 states have internal predecessors, (1926), 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 963 [2021-11-23 02:26:07,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:07,281 INFO L225 Difference]: With dead ends: 3834 [2021-11-23 02:26:07,281 INFO L226 Difference]: Without dead ends: 3833 [2021-11-23 02:26:07,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3079 GetRequests, 2496 SyntacticMatches, 191 SemanticMatches, 392 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117836 ImplicationChecksByTransitivity, 79.2s TimeCoverageRelationStatistics Valid=75469, Invalid=79373, Unknown=0, NotChecked=0, Total=154842 [2021-11-23 02:26:07,294 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 47 mSDsluCounter, 1150 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:07,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 1161 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 02:26:07,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3833 states. [2021-11-23 02:26:07,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3833 to 3833. [2021-11-23 02:26:07,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3833 states, 3831 states have (on average 1.100234925606891) internal successors, (4215), 3832 states have internal predecessors, (4215), 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) [2021-11-23 02:26:07,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3833 states to 3833 states and 4215 transitions. [2021-11-23 02:26:07,388 INFO L78 Accepts]: Start accepts. Automaton has 3833 states and 4215 transitions. Word has length 963 [2021-11-23 02:26:07,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:07,390 INFO L470 AbstractCegarLoop]: Abstraction has 3833 states and 4215 transitions. [2021-11-23 02:26:07,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 5.028720626631854) internal successors, (1926), 383 states have internal predecessors, (1926), 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) [2021-11-23 02:26:07,392 INFO L276 IsEmpty]: Start isEmpty. Operand 3833 states and 4215 transitions. [2021-11-23 02:26:07,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1917 [2021-11-23 02:26:07,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:07,426 INFO L514 BasicCegarLoop]: trace histogram [383, 383, 383, 382, 382, 1, 1, 1] [2021-11-23 02:26:07,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-23 02:26:07,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-23 02:26:07,654 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:26:07,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:07,655 INFO L85 PathProgramCache]: Analyzing trace with hash 773198644, now seen corresponding path program 8 times [2021-11-23 02:26:07,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:07,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644462322] [2021-11-23 02:26:07,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:07,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:08,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:27:00,801 INFO L134 CoverageAnalysis]: Checked inductivity of 365383 backedges. 0 proven. 365383 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:27:00,801 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:27:00,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644462322] [2021-11-23 02:27:00,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644462322] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:27:00,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593044814] [2021-11-23 02:27:00,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 02:27:00,803 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:27:00,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:27:00,807 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:27:00,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f90459e-c96b-4771-b547-864e7ed39613/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-23 02:27:05,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 383 check-sat command(s) [2021-11-23 02:27:05,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:27:05,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 3456 conjuncts, 384 conjunts are in the unsatisfiable core [2021-11-23 02:27:05,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:27:10,183 INFO L134 CoverageAnalysis]: Checked inductivity of 365383 backedges. 0 proven. 365383 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:27:10,184 INFO L328 TraceCheckSpWp]: Computing backward predicates...