./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 47d7aa734a1bf75c79acf2b3acca3677f12d2522fb1fc624c15ccfe9b5a8438a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:35:55,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:35:55,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:35:55,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:35:55,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:35:55,322 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:35:55,324 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:35:55,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:35:55,331 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:35:55,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:35:55,340 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:35:55,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:35:55,342 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:35:55,346 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:35:55,348 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:35:55,354 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:35:55,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:35:55,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:35:55,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:35:55,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:35:55,372 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:35:55,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:35:55,377 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:35:55,378 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:35:55,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:35:55,382 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:35:55,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:35:55,385 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:35:55,386 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:35:55,387 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:35:55,387 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:35:55,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:35:55,390 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:35:55,391 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:35:55,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:35:55,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:35:55,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:35:55,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:35:55,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:35:55,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:35:55,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:35:55,397 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-03 04:35:55,442 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:35:55,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:35:55,444 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:35:55,444 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:35:55,444 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:35:55,444 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:35:55,445 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:35:55,445 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:35:55,451 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:35:55,451 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:35:55,453 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:35:55,453 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:35:55,453 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:35:55,453 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:35:55,454 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:35:55,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:35:55,455 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 04:35:55,455 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:35:55,456 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:35:55,456 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:35:55,456 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:35:55,456 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:35:55,457 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-03 04:35:55,457 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:35:55,457 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:35:55,457 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:35:55,458 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:35:55,458 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:35:55,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:35:55,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:35:55,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:35:55,461 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:35:55,461 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:35:55,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:35:55,462 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:35:55,462 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:35:55,462 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:35:55,462 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_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47d7aa734a1bf75c79acf2b3acca3677f12d2522fb1fc624c15ccfe9b5a8438a [2021-11-03 04:35:55,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:35:55,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:35:55,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:35:55,753 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:35:55,753 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:35:55,754 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-2.c [2021-11-03 04:35:55,826 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/data/f882880a0/346775a1a3c543078f3912e9595685cc/FLAGd2fea8178 [2021-11-03 04:35:56,263 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:35:56,264 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-2.c [2021-11-03 04:35:56,270 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/data/f882880a0/346775a1a3c543078f3912e9595685cc/FLAGd2fea8178 [2021-11-03 04:35:56,671 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/data/f882880a0/346775a1a3c543078f3912e9595685cc [2021-11-03 04:35:56,673 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:35:56,675 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:35:56,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:35:56,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:35:56,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:35:56,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:35:56" (1/1) ... [2021-11-03 04:35:56,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb4577d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:56, skipping insertion in model container [2021-11-03 04:35:56,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:35:56" (1/1) ... [2021-11-03 04:35:56,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:35:56,700 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:35:56,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:35:56,890 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:35:56,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:35:56,927 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:35:56,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:56 WrapperNode [2021-11-03 04:35:56,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:35:56,929 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:35:56,929 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:35:56,929 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:35:56,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:56" (1/1) ... [2021-11-03 04:35:56,942 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:56" (1/1) ... [2021-11-03 04:35:56,960 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:35:56,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:35:56,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:35:56,961 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:35:56,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:56" (1/1) ... [2021-11-03 04:35:56,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:56" (1/1) ... [2021-11-03 04:35:56,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:56" (1/1) ... [2021-11-03 04:35:56,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:56" (1/1) ... [2021-11-03 04:35:56,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:56" (1/1) ... [2021-11-03 04:35:56,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:56" (1/1) ... [2021-11-03 04:35:56,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:56" (1/1) ... [2021-11-03 04:35:56,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:35:56,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:35:56,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:35:56,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:35:56,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:56" (1/1) ... [2021-11-03 04:35:56,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:35:57,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:35:57,024 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:35:57,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:35:57,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:35:57,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:35:57,274 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:35:57,275 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-03 04:35:57,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:35:57 BoogieIcfgContainer [2021-11-03 04:35:57,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:35:57,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:35:57,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:35:57,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:35:57,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:35:56" (1/3) ... [2021-11-03 04:35:57,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6231a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:35:57, skipping insertion in model container [2021-11-03 04:35:57,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:56" (2/3) ... [2021-11-03 04:35:57,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6231a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:35:57, skipping insertion in model container [2021-11-03 04:35:57,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:35:57" (3/3) ... [2021-11-03 04:35:57,286 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-random1d-2.c [2021-11-03 04:35:57,291 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:35:57,291 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-03 04:35:57,377 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:35:57,384 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 [2021-11-03 04:35:57,384 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-03 04:35:57,398 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:35:57,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 04:35:57,402 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:35:57,403 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 04:35:57,404 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:35:57,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:35:57,409 INFO L85 PathProgramCache]: Analyzing trace with hash 29684842, now seen corresponding path program 1 times [2021-11-03 04:35:57,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:35:57,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774472754] [2021-11-03 04:35:57,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:35:57,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:35:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:35:57,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:35:57,607 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:35:57,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774472754] [2021-11-03 04:35:57,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774472754] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:35:57,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:35:57,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:35:57,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770349216] [2021-11-03 04:35:57,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:35:57,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:35:57,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:35:57,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:35:57,651 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 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) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:35:57,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:35:57,743 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2021-11-03 04:35:57,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:35:57,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-03 04:35:57,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:35:57,752 INFO L225 Difference]: With dead ends: 32 [2021-11-03 04:35:57,753 INFO L226 Difference]: Without dead ends: 26 [2021-11-03 04:35:57,755 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:35:57,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-03 04:35:57,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2021-11-03 04:35:57,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 22 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:35:57,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2021-11-03 04:35:57,797 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 5 [2021-11-03 04:35:57,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:35:57,797 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2021-11-03 04:35:57,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:35:57,798 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2021-11-03 04:35:57,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 04:35:57,799 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:35:57,799 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 04:35:57,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 04:35:57,801 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:35:57,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:35:57,807 INFO L85 PathProgramCache]: Analyzing trace with hash 920230152, now seen corresponding path program 1 times [2021-11-03 04:35:57,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:35:57,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990431827] [2021-11-03 04:35:57,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:35:57,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:35:57,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:35:57,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:35:57,887 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:35:57,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990431827] [2021-11-03 04:35:57,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990431827] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:35:57,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:35:57,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:35:57,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194382913] [2021-11-03 04:35:57,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:35:57,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:35:57,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:35:57,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:35:57,891 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:35:57,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:35:57,925 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2021-11-03 04:35:57,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:35:57,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-03 04:35:57,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:35:57,926 INFO L225 Difference]: With dead ends: 40 [2021-11-03 04:35:57,927 INFO L226 Difference]: Without dead ends: 38 [2021-11-03 04:35:57,927 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:35:57,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-03 04:35:57,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2021-11-03 04:35:57,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 35 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:35:57,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2021-11-03 04:35:57,934 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 6 [2021-11-03 04:35:57,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:35:57,935 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2021-11-03 04:35:57,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:35:57,935 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2021-11-03 04:35:57,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-03 04:35:57,936 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:35:57,936 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:35:57,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 04:35:57,937 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:35:57,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:35:57,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1537636301, now seen corresponding path program 1 times [2021-11-03 04:35:57,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:35:57,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524171272] [2021-11-03 04:35:57,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:35:57,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:35:57,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:35:57,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:35:57,965 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:35:57,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524171272] [2021-11-03 04:35:57,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524171272] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:35:57,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:35:57,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:35:57,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970396715] [2021-11-03 04:35:57,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:35:57,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:35:57,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:35:57,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:35:57,968 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:35:57,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:35:57,986 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2021-11-03 04:35:57,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:35:57,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-03 04:35:57,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:35:57,989 INFO L225 Difference]: With dead ends: 42 [2021-11-03 04:35:57,990 INFO L226 Difference]: Without dead ends: 41 [2021-11-03 04:35:57,990 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:35:57,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-03 04:35:57,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-11-03 04:35:57,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 38 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:35:57,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2021-11-03 04:35:57,997 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 7 [2021-11-03 04:35:57,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:35:57,998 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2021-11-03 04:35:57,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:35:57,998 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2021-11-03 04:35:57,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 04:35:57,999 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:35:57,999 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:35:57,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 04:35:58,000 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:35:58,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:35:58,000 INFO L85 PathProgramCache]: Analyzing trace with hash -422085014, now seen corresponding path program 1 times [2021-11-03 04:35:58,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:35:58,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855099531] [2021-11-03 04:35:58,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:35:58,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:35:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:35:58,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:35:58,038 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:35:58,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855099531] [2021-11-03 04:35:58,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855099531] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:35:58,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:35:58,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:35:58,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400349887] [2021-11-03 04:35:58,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:35:58,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:35:58,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:35:58,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:35:58,042 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:35:58,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:35:58,061 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2021-11-03 04:35:58,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:35:58,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-03 04:35:58,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:35:58,064 INFO L225 Difference]: With dead ends: 39 [2021-11-03 04:35:58,065 INFO L226 Difference]: Without dead ends: 38 [2021-11-03 04:35:58,065 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:35:58,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-03 04:35:58,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-11-03 04:35:58,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 37 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:35:58,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2021-11-03 04:35:58,077 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 8 [2021-11-03 04:35:58,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:35:58,077 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2021-11-03 04:35:58,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:35:58,078 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2021-11-03 04:35:58,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 04:35:58,079 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:35:58,079 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:35:58,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 04:35:58,080 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:35:58,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:35:58,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1329633411, now seen corresponding path program 1 times [2021-11-03 04:35:58,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:35:58,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581505765] [2021-11-03 04:35:58,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:35:58,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:35:58,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:35:58,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:35:58,151 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:35:58,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581505765] [2021-11-03 04:35:58,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581505765] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:35:58,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070966039] [2021-11-03 04:35:58,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:35:58,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:35:58,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:35:58,159 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:35:58,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 04:35:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:35:58,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:35:58,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:35:58,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:35:58,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:35:58,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:35:58,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070966039] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:35:58,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1448636877] [2021-11-03 04:35:58,336 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-03 04:35:58,337 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:35:58,340 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:35:58,346 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:35:58,346 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:35:58,377 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:35:58,382 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 04:35:58,391 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-03 04:35:58,395 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:35:58,401 INFO L180 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size [2021-11-03 04:35:58,404 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:35:58,407 INFO L180 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size [2021-11-03 04:35:58,410 INFO L185 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size 13 [2021-11-03 04:35:58,413 INFO L180 QuantifierPusher]: treesize reduction 3, result has 90.6 percent of original size [2021-11-03 04:35:58,417 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:35:58,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:35:58,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:35:58,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:35:58,474 INFO L180 QuantifierPusher]: treesize reduction 11, result has 80.7 percent of original size [2021-11-03 04:35:58,478 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-03 04:35:58,484 INFO L180 QuantifierPusher]: treesize reduction 9, result has 84.5 percent of original size [2021-11-03 04:35:58,488 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:35:58,492 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:35:58,497 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-03 04:35:58,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:35:58,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:35:58,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:35:58,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:35:58,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:35:58,538 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-11-03 04:35:58,540 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-03 04:35:58,543 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-03 04:35:58,545 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:35:58,547 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:35:58,556 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-03 04:35:58,560 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-11-03 04:35:58,562 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-03 04:35:58,566 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-03 04:35:58,568 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:35:58,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:35:58,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:35:58,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:35:58,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:35:58,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:35:58,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:35:58,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:35:58,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:35:58,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:35:58,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:35:58,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:35:58,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:35:58,736 INFO L180 QuantifierPusher]: treesize reduction 5, result has 94.6 percent of original size [2021-11-03 04:35:58,742 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:35:58,744 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:35:58,748 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 04:35:58,751 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-03 04:35:58,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:35:58,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:35:58,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:35:58,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:35:58,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:35:58,769 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:35:59,042 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:35:59,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:35:59,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-11-03 04:35:59,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519667033] [2021-11-03 04:35:59,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:35:59,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:35:59,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:35:59,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:35:59,045 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:35:59,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:35:59,132 INFO L93 Difference]: Finished difference Result 97 states and 134 transitions. [2021-11-03 04:35:59,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:35:59,133 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-03 04:35:59,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:35:59,139 INFO L225 Difference]: With dead ends: 97 [2021-11-03 04:35:59,139 INFO L226 Difference]: Without dead ends: 95 [2021-11-03 04:35:59,141 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:35:59,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-03 04:35:59,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 78. [2021-11-03 04:35:59,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 1.3972602739726028) internal successors, (102), 77 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:35:59,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 102 transitions. [2021-11-03 04:35:59,162 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 102 transitions. Word has length 11 [2021-11-03 04:35:59,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:35:59,162 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 102 transitions. [2021-11-03 04:35:59,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:35:59,163 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 102 transitions. [2021-11-03 04:35:59,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-03 04:35:59,163 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:35:59,163 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:35:59,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:35:59,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:35:59,364 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:35:59,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:35:59,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1088847147, now seen corresponding path program 1 times [2021-11-03 04:35:59,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:35:59,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228233605] [2021-11-03 04:35:59,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:35:59,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:35:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:35:59,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:35:59,406 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:35:59,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228233605] [2021-11-03 04:35:59,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228233605] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:35:59,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591243973] [2021-11-03 04:35:59,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:35:59,407 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:35:59,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:35:59,408 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:35:59,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 04:35:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:35:59,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:35:59,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:35:59,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:35:59,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:35:59,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:35:59,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591243973] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:35:59,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [852440875] [2021-11-03 04:35:59,592 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-03 04:35:59,592 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:35:59,593 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:35:59,593 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:35:59,594 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:35:59,609 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:35:59,615 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 04:35:59,619 INFO L180 QuantifierPusher]: treesize reduction 13, result has 60.6 percent of original size [2021-11-03 04:35:59,621 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:35:59,623 INFO L180 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size [2021-11-03 04:35:59,624 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-03 04:35:59,626 INFO L180 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-11-03 04:35:59,628 INFO L185 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-11-03 04:35:59,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:35:59,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:35:59,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:35:59,674 INFO L180 QuantifierPusher]: treesize reduction 8, result has 89.0 percent of original size [2021-11-03 04:35:59,680 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-03 04:35:59,685 INFO L180 QuantifierPusher]: treesize reduction 3, result has 94.9 percent of original size [2021-11-03 04:35:59,695 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-03 04:35:59,699 INFO L180 QuantifierPusher]: treesize reduction 5, result has 92.6 percent of original size [2021-11-03 04:35:59,713 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-03 04:35:59,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:35:59,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:35:59,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:35:59,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:35:59,745 INFO L180 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-11-03 04:35:59,746 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-03 04:35:59,748 INFO L180 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-11-03 04:35:59,752 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-03 04:35:59,756 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-03 04:35:59,760 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-03 04:35:59,764 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:35:59,768 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-03 04:35:59,772 INFO L180 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-11-03 04:35:59,773 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-03 04:35:59,778 INFO L180 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-11-03 04:35:59,781 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-03 04:35:59,784 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-03 04:35:59,788 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-03 04:35:59,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:35:59,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:35:59,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:35:59,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:35:59,810 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:36:00,014 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:36:00,014 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:36:00,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-11-03 04:36:00,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832811104] [2021-11-03 04:36:00,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:36:00,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:36:00,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:36:00,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:36:00,016 INFO L87 Difference]: Start difference. First operand 78 states and 102 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:00,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:36:00,054 INFO L93 Difference]: Finished difference Result 134 states and 185 transitions. [2021-11-03 04:36:00,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:36:00,054 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-03 04:36:00,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:36:00,055 INFO L225 Difference]: With dead ends: 134 [2021-11-03 04:36:00,056 INFO L226 Difference]: Without dead ends: 132 [2021-11-03 04:36:00,056 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:36:00,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-03 04:36:00,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 98. [2021-11-03 04:36:00,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 94 states have (on average 1.351063829787234) internal successors, (127), 97 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:00,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 127 transitions. [2021-11-03 04:36:00,065 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 127 transitions. Word has length 12 [2021-11-03 04:36:00,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:36:00,065 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 127 transitions. [2021-11-03 04:36:00,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:00,066 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 127 transitions. [2021-11-03 04:36:00,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 04:36:00,066 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:36:00,066 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-03 04:36:00,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:36:00,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-11-03 04:36:00,283 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:36:00,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:36:00,284 INFO L85 PathProgramCache]: Analyzing trace with hash -2122544628, now seen corresponding path program 1 times [2021-11-03 04:36:00,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:36:00,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160397063] [2021-11-03 04:36:00,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:36:00,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:36:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:36:00,309 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:00,309 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:36:00,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160397063] [2021-11-03 04:36:00,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160397063] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:36:00,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65080369] [2021-11-03 04:36:00,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:36:00,310 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:36:00,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:36:00,311 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:36:00,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 04:36:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:36:00,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:36:00,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:36:00,399 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:00,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:36:00,440 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:00,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65080369] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:36:00,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1177164092] [2021-11-03 04:36:00,443 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-03 04:36:00,443 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:36:00,443 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:36:00,444 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:36:00,444 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:36:00,453 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:36:00,454 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 04:36:00,460 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-03 04:36:00,463 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:36:00,466 INFO L180 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size [2021-11-03 04:36:00,467 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-03 04:36:00,468 INFO L180 QuantifierPusher]: treesize reduction 10, result has 68.8 percent of original size [2021-11-03 04:36:00,471 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-03 04:36:00,474 INFO L180 QuantifierPusher]: treesize reduction 7, result has 80.6 percent of original size [2021-11-03 04:36:00,479 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:36:00,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:00,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:00,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:00,502 INFO L180 QuantifierPusher]: treesize reduction 11, result has 80.7 percent of original size [2021-11-03 04:36:00,506 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-03 04:36:00,509 INFO L180 QuantifierPusher]: treesize reduction 9, result has 84.5 percent of original size [2021-11-03 04:36:00,518 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:36:00,520 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:36:00,526 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-03 04:36:00,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:00,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:00,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:00,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:00,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:00,559 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-11-03 04:36:00,563 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-03 04:36:00,565 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-03 04:36:00,569 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:36:00,572 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:36:00,576 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-03 04:36:00,579 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-11-03 04:36:00,581 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-03 04:36:00,584 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-03 04:36:00,586 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:36:00,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:00,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:00,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:00,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:00,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:00,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:00,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:00,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:00,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:00,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:00,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:00,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:00,645 INFO L180 QuantifierPusher]: treesize reduction 5, result has 94.6 percent of original size [2021-11-03 04:36:00,648 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:36:00,650 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:36:00,656 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 04:36:00,658 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-03 04:36:00,661 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:36:00,892 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:36:00,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:36:00,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-11-03 04:36:00,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480385003] [2021-11-03 04:36:00,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:36:00,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:36:00,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:36:00,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:36:00,894 INFO L87 Difference]: Start difference. First operand 98 states and 127 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:00,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:36:00,931 INFO L93 Difference]: Finished difference Result 206 states and 267 transitions. [2021-11-03 04:36:00,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:36:00,935 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-03 04:36:00,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:36:00,936 INFO L225 Difference]: With dead ends: 206 [2021-11-03 04:36:00,936 INFO L226 Difference]: Without dead ends: 205 [2021-11-03 04:36:00,937 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:36:00,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-11-03 04:36:00,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 203. [2021-11-03 04:36:00,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 199 states have (on average 1.2412060301507537) internal successors, (247), 202 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:00,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 247 transitions. [2021-11-03 04:36:00,962 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 247 transitions. Word has length 13 [2021-11-03 04:36:00,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:36:00,963 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 247 transitions. [2021-11-03 04:36:00,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:00,964 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 247 transitions. [2021-11-03 04:36:00,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:36:00,965 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:36:00,965 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1] [2021-11-03 04:36:00,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-03 04:36:01,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:36:01,183 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:36:01,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:36:01,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1000065496, now seen corresponding path program 1 times [2021-11-03 04:36:01,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:36:01,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339375746] [2021-11-03 04:36:01,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:36:01,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:36:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:36:01,237 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:01,237 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:36:01,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339375746] [2021-11-03 04:36:01,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339375746] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:36:01,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410515695] [2021-11-03 04:36:01,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:36:01,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:36:01,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:36:01,239 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:36:01,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-03 04:36:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:36:01,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:36:01,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:36:01,351 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:01,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:36:01,429 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:01,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410515695] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:36:01,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2020823269] [2021-11-03 04:36:01,432 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-03 04:36:01,432 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:36:01,432 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:36:01,432 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:36:01,432 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:36:01,436 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:36:01,437 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 04:36:01,440 INFO L180 QuantifierPusher]: treesize reduction 13, result has 60.6 percent of original size [2021-11-03 04:36:01,441 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:36:01,443 INFO L180 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size [2021-11-03 04:36:01,444 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-03 04:36:01,445 INFO L180 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-11-03 04:36:01,447 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-03 04:36:01,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:01,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:01,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:01,478 INFO L180 QuantifierPusher]: treesize reduction 15, result has 77.6 percent of original size [2021-11-03 04:36:01,480 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-03 04:36:01,482 INFO L180 QuantifierPusher]: treesize reduction 3, result has 94.6 percent of original size [2021-11-03 04:36:01,485 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:36:01,487 INFO L180 QuantifierPusher]: treesize reduction 5, result has 92.3 percent of original size [2021-11-03 04:36:01,489 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-03 04:36:01,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:01,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:01,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:01,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:01,504 INFO L180 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-11-03 04:36:01,505 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-03 04:36:01,506 INFO L180 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-11-03 04:36:01,508 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-03 04:36:01,509 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-03 04:36:01,511 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-03 04:36:01,513 INFO L180 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-11-03 04:36:01,515 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-03 04:36:01,517 INFO L180 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-11-03 04:36:01,519 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-03 04:36:01,521 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-03 04:36:01,522 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-03 04:36:01,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:01,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:01,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:01,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:01,533 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:36:01,750 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:36:01,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:36:01,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-03 04:36:01,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646832204] [2021-11-03 04:36:01,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:36:01,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:36:01,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:36:01,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:36:01,752 INFO L87 Difference]: Start difference. First operand 203 states and 247 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:01,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:36:01,821 INFO L93 Difference]: Finished difference Result 398 states and 514 transitions. [2021-11-03 04:36:01,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 04:36:01,822 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-03 04:36:01,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:36:01,824 INFO L225 Difference]: With dead ends: 398 [2021-11-03 04:36:01,824 INFO L226 Difference]: Without dead ends: 397 [2021-11-03 04:36:01,825 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:36:01,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2021-11-03 04:36:01,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 329. [2021-11-03 04:36:01,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 325 states have (on average 1.2769230769230768) internal successors, (415), 328 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:01,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 415 transitions. [2021-11-03 04:36:01,842 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 415 transitions. Word has length 18 [2021-11-03 04:36:01,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:36:01,842 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 415 transitions. [2021-11-03 04:36:01,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:01,843 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 415 transitions. [2021-11-03 04:36:01,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-03 04:36:01,845 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:36:01,845 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1] [2021-11-03 04:36:01,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:36:02,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:36:02,059 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:36:02,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:36:02,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1708948558, now seen corresponding path program 2 times [2021-11-03 04:36:02,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:36:02,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050256256] [2021-11-03 04:36:02,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:36:02,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:36:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:36:02,111 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:02,112 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:36:02,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050256256] [2021-11-03 04:36:02,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050256256] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:36:02,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358378056] [2021-11-03 04:36:02,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:36:02,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:36:02,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:36:02,127 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:36:02,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-03 04:36:02,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-03 04:36:02,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:36:02,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:36:02,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:36:02,280 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:02,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:36:02,401 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:02,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358378056] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:36:02,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1736098932] [2021-11-03 04:36:02,405 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-03 04:36:02,405 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:36:02,405 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:36:02,406 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:36:02,406 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:36:02,411 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:36:02,412 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 04:36:02,415 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-03 04:36:02,422 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:36:02,425 INFO L180 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size [2021-11-03 04:36:02,428 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-03 04:36:02,430 INFO L180 QuantifierPusher]: treesize reduction 10, result has 68.8 percent of original size [2021-11-03 04:36:02,434 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-03 04:36:02,436 INFO L180 QuantifierPusher]: treesize reduction 7, result has 80.6 percent of original size [2021-11-03 04:36:02,439 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:36:02,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:02,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:02,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:02,453 INFO L180 QuantifierPusher]: treesize reduction 11, result has 80.7 percent of original size [2021-11-03 04:36:02,455 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-03 04:36:02,457 INFO L180 QuantifierPusher]: treesize reduction 9, result has 84.5 percent of original size [2021-11-03 04:36:02,480 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:36:02,485 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:36:02,488 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-03 04:36:02,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:02,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:02,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:02,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:02,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:02,506 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-11-03 04:36:02,508 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-03 04:36:02,509 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-03 04:36:02,511 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:36:02,512 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:36:02,517 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-03 04:36:02,520 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-11-03 04:36:02,522 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-03 04:36:02,524 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-03 04:36:02,526 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:36:02,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:02,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:02,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:02,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:02,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:02,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:02,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:02,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:02,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:02,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:02,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:02,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:02,567 INFO L180 QuantifierPusher]: treesize reduction 5, result has 94.6 percent of original size [2021-11-03 04:36:02,569 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:36:02,570 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:36:02,573 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 04:36:02,575 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-03 04:36:02,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:02,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:02,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:02,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:02,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:02,587 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:36:02,820 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:36:02,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:36:02,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-11-03 04:36:02,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824314290] [2021-11-03 04:36:02,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 04:36:02,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:36:02,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 04:36:02,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2021-11-03 04:36:02,822 INFO L87 Difference]: Start difference. First operand 329 states and 415 transitions. Second operand has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 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) [2021-11-03 04:36:02,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:36:02,938 INFO L93 Difference]: Finished difference Result 870 states and 1194 transitions. [2021-11-03 04:36:02,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 04:36:02,938 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 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) Word has length 29 [2021-11-03 04:36:02,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:36:02,944 INFO L225 Difference]: With dead ends: 870 [2021-11-03 04:36:02,944 INFO L226 Difference]: Without dead ends: 868 [2021-11-03 04:36:02,945 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2021-11-03 04:36:02,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2021-11-03 04:36:02,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 572. [2021-11-03 04:36:02,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 568 states have (on average 1.2869718309859155) internal successors, (731), 571 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:02,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 731 transitions. [2021-11-03 04:36:02,970 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 731 transitions. Word has length 29 [2021-11-03 04:36:02,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:36:02,970 INFO L470 AbstractCegarLoop]: Abstraction has 572 states and 731 transitions. [2021-11-03 04:36:02,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 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) [2021-11-03 04:36:02,971 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 731 transitions. [2021-11-03 04:36:02,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-03 04:36:02,973 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:36:02,973 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1] [2021-11-03 04:36:03,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:36:03,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2021-11-03 04:36:03,199 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:36:03,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:36:03,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1622058775, now seen corresponding path program 2 times [2021-11-03 04:36:03,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:36:03,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666247912] [2021-11-03 04:36:03,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:36:03,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:36:03,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:36:03,245 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-03 04:36:03,245 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:36:03,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666247912] [2021-11-03 04:36:03,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666247912] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:36:03,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722284302] [2021-11-03 04:36:03,246 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:36:03,246 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:36:03,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:36:03,247 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:36:03,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-03 04:36:03,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-03 04:36:03,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:36:03,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:36:03,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:36:03,416 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-03 04:36:03,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:36:03,518 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-03 04:36:03,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722284302] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:36:03,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1023128322] [2021-11-03 04:36:03,520 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-03 04:36:03,521 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:36:03,521 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:36:03,521 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:36:03,521 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:36:03,527 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:36:03,529 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 04:36:03,532 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-03 04:36:03,536 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:36:03,542 INFO L180 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size [2021-11-03 04:36:03,543 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:36:03,545 INFO L180 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size [2021-11-03 04:36:03,546 INFO L185 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size 13 [2021-11-03 04:36:03,548 INFO L180 QuantifierPusher]: treesize reduction 3, result has 90.6 percent of original size [2021-11-03 04:36:03,551 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:36:03,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:03,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:03,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:03,561 INFO L180 QuantifierPusher]: treesize reduction 11, result has 80.7 percent of original size [2021-11-03 04:36:03,563 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-03 04:36:03,566 INFO L180 QuantifierPusher]: treesize reduction 9, result has 84.5 percent of original size [2021-11-03 04:36:03,569 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:36:03,571 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:36:03,574 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-03 04:36:03,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:03,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:03,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:03,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:03,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:03,588 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-11-03 04:36:03,589 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-03 04:36:03,591 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-03 04:36:03,593 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:36:03,594 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:36:03,596 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-03 04:36:03,599 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-11-03 04:36:03,600 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-03 04:36:03,602 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-03 04:36:03,603 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:36:03,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:03,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:03,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:03,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:03,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:03,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:03,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:03,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:03,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:03,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:03,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:03,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:03,640 INFO L180 QuantifierPusher]: treesize reduction 5, result has 94.6 percent of original size [2021-11-03 04:36:03,642 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:36:03,644 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:36:03,647 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 04:36:03,648 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-03 04:36:03,649 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:36:03,863 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:36:03,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:36:03,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2021-11-03 04:36:03,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169810439] [2021-11-03 04:36:03,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:36:03,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:36:03,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:36:03,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:36:03,865 INFO L87 Difference]: Start difference. First operand 572 states and 731 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:03,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:36:03,891 INFO L93 Difference]: Finished difference Result 572 states and 731 transitions. [2021-11-03 04:36:03,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:36:03,892 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-03 04:36:03,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:36:03,896 INFO L225 Difference]: With dead ends: 572 [2021-11-03 04:36:03,896 INFO L226 Difference]: Without dead ends: 571 [2021-11-03 04:36:03,897 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:36:03,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-11-03 04:36:03,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 456. [2021-11-03 04:36:03,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 453 states have (on average 1.1898454746136866) internal successors, (539), 455 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:03,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 539 transitions. [2021-11-03 04:36:03,915 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 539 transitions. Word has length 31 [2021-11-03 04:36:03,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:36:03,915 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 539 transitions. [2021-11-03 04:36:03,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:03,916 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 539 transitions. [2021-11-03 04:36:03,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-03 04:36:03,917 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:36:03,917 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1] [2021-11-03 04:36:03,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:36:04,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2021-11-03 04:36:04,131 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:36:04,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:36:04,132 INFO L85 PathProgramCache]: Analyzing trace with hash 965729500, now seen corresponding path program 2 times [2021-11-03 04:36:04,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:36:04,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335847170] [2021-11-03 04:36:04,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:36:04,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:36:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:36:04,209 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:04,209 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:36:04,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335847170] [2021-11-03 04:36:04,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335847170] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:36:04,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196725690] [2021-11-03 04:36:04,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:36:04,210 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:36:04,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:36:04,211 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:36:04,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-03 04:36:04,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-11-03 04:36:04,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:36:04,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:36:04,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:36:04,506 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:04,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:36:04,770 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:04,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196725690] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:36:04,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [517046858] [2021-11-03 04:36:04,773 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-03 04:36:04,774 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:36:04,774 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:36:04,774 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:36:04,774 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:36:04,778 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:36:04,779 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 04:36:04,783 INFO L180 QuantifierPusher]: treesize reduction 13, result has 60.6 percent of original size [2021-11-03 04:36:04,784 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:36:04,786 INFO L180 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size [2021-11-03 04:36:04,787 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-03 04:36:04,790 INFO L180 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-11-03 04:36:04,791 INFO L185 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-11-03 04:36:04,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:04,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:04,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:04,807 INFO L180 QuantifierPusher]: treesize reduction 8, result has 89.0 percent of original size [2021-11-03 04:36:04,809 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-03 04:36:04,811 INFO L180 QuantifierPusher]: treesize reduction 3, result has 94.9 percent of original size [2021-11-03 04:36:04,814 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-03 04:36:04,816 INFO L180 QuantifierPusher]: treesize reduction 5, result has 92.6 percent of original size [2021-11-03 04:36:04,818 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-03 04:36:04,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:04,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:04,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:04,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:04,835 INFO L180 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-11-03 04:36:04,836 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-03 04:36:04,838 INFO L180 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-11-03 04:36:04,839 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-03 04:36:04,840 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-03 04:36:04,842 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-03 04:36:04,845 INFO L180 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-11-03 04:36:04,846 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-03 04:36:04,849 INFO L180 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-11-03 04:36:04,852 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-03 04:36:04,854 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-03 04:36:04,857 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-03 04:36:04,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:04,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:04,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:04,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:04,867 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:36:05,128 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:36:05,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:36:05,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2021-11-03 04:36:05,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253109222] [2021-11-03 04:36:05,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 04:36:05,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:36:05,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 04:36:05,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2021-11-03 04:36:05,130 INFO L87 Difference]: Start difference. First operand 456 states and 539 transitions. Second operand has 16 states, 15 states have (on average 5.533333333333333) internal successors, (83), 16 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:05,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:36:05,319 INFO L93 Difference]: Finished difference Result 1648 states and 2019 transitions. [2021-11-03 04:36:05,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-03 04:36:05,320 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.533333333333333) internal successors, (83), 16 states have internal predecessors, (83), 0 states have call successors, (0), 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 42 [2021-11-03 04:36:05,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:36:05,329 INFO L225 Difference]: With dead ends: 1648 [2021-11-03 04:36:05,329 INFO L226 Difference]: Without dead ends: 1647 [2021-11-03 04:36:05,331 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 104 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2021-11-03 04:36:05,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2021-11-03 04:36:05,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 902. [2021-11-03 04:36:05,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 899 states have (on average 1.1802002224694104) internal successors, (1061), 901 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:05,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1061 transitions. [2021-11-03 04:36:05,373 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1061 transitions. Word has length 42 [2021-11-03 04:36:05,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:36:05,374 INFO L470 AbstractCegarLoop]: Abstraction has 902 states and 1061 transitions. [2021-11-03 04:36:05,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.533333333333333) internal successors, (83), 16 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:05,374 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1061 transitions. [2021-11-03 04:36:05,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-03 04:36:05,376 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:36:05,376 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1] [2021-11-03 04:36:05,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:36:05,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:36:05,603 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:36:05,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:36:05,603 INFO L85 PathProgramCache]: Analyzing trace with hash -499368540, now seen corresponding path program 3 times [2021-11-03 04:36:05,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:36:05,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077153544] [2021-11-03 04:36:05,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:36:05,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:36:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:36:05,766 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:05,766 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:36:05,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077153544] [2021-11-03 04:36:05,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077153544] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:36:05,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871303348] [2021-11-03 04:36:05,767 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-03 04:36:05,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:36:05,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:36:05,768 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:36:05,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-03 04:36:05,914 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-03 04:36:05,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:36:05,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-03 04:36:05,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:36:06,077 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:06,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:36:06,400 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:06,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871303348] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:36:06,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [236030497] [2021-11-03 04:36:06,404 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-03 04:36:06,404 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:36:06,405 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:36:06,405 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:36:06,405 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:36:06,412 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:36:06,413 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 04:36:06,416 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-03 04:36:06,420 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:36:06,422 INFO L180 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size [2021-11-03 04:36:06,423 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:36:06,425 INFO L180 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size [2021-11-03 04:36:06,429 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-03 04:36:06,430 INFO L180 QuantifierPusher]: treesize reduction 7, result has 80.6 percent of original size [2021-11-03 04:36:06,432 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:36:06,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:06,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:06,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:06,444 INFO L180 QuantifierPusher]: treesize reduction 11, result has 80.7 percent of original size [2021-11-03 04:36:06,446 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-03 04:36:06,448 INFO L180 QuantifierPusher]: treesize reduction 9, result has 84.5 percent of original size [2021-11-03 04:36:06,451 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:36:06,453 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:36:06,460 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-03 04:36:06,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:06,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:06,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:06,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:06,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:06,473 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-11-03 04:36:06,474 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-03 04:36:06,475 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-03 04:36:06,476 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:36:06,477 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:36:06,479 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-03 04:36:06,482 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-11-03 04:36:06,483 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-03 04:36:06,485 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-03 04:36:06,487 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:36:06,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:06,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:06,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:06,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:06,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:06,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:06,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:06,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:06,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:06,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:06,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:06,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:06,520 INFO L180 QuantifierPusher]: treesize reduction 5, result has 94.6 percent of original size [2021-11-03 04:36:06,526 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:36:06,527 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:36:06,530 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 04:36:06,531 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-03 04:36:06,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:06,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:06,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:06,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:06,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:06,542 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:36:06,807 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:36:06,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:36:06,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2021-11-03 04:36:06,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635297569] [2021-11-03 04:36:06,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-03 04:36:06,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:36:06,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-03 04:36:06,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=682, Unknown=0, NotChecked=0, Total=992 [2021-11-03 04:36:06,810 INFO L87 Difference]: Start difference. First operand 902 states and 1061 transitions. Second operand has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 24 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:07,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:36:07,098 INFO L93 Difference]: Finished difference Result 4198 states and 5263 transitions. [2021-11-03 04:36:07,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-03 04:36:07,099 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 24 states have internal predecessors, (129), 0 states have call successors, (0), 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 65 [2021-11-03 04:36:07,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:36:07,125 INFO L225 Difference]: With dead ends: 4198 [2021-11-03 04:36:07,125 INFO L226 Difference]: Without dead ends: 4196 [2021-11-03 04:36:07,130 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=310, Invalid=682, Unknown=0, NotChecked=0, Total=992 [2021-11-03 04:36:07,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4196 states. [2021-11-03 04:36:07,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4196 to 1944. [2021-11-03 04:36:07,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1944 states, 1941 states have (on average 1.1597114889232354) internal successors, (2251), 1943 states have internal predecessors, (2251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:07,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1944 states to 1944 states and 2251 transitions. [2021-11-03 04:36:07,228 INFO L78 Accepts]: Start accepts. Automaton has 1944 states and 2251 transitions. Word has length 65 [2021-11-03 04:36:07,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:36:07,229 INFO L470 AbstractCegarLoop]: Abstraction has 1944 states and 2251 transitions. [2021-11-03 04:36:07,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 24 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:07,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1944 states and 2251 transitions. [2021-11-03 04:36:07,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-03 04:36:07,231 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:36:07,231 INFO L513 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 1, 1, 1] [2021-11-03 04:36:07,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-03 04:36:07,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2021-11-03 04:36:07,447 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:36:07,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:36:07,448 INFO L85 PathProgramCache]: Analyzing trace with hash 459773508, now seen corresponding path program 3 times [2021-11-03 04:36:07,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:36:07,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836854113] [2021-11-03 04:36:07,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:36:07,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:36:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:36:07,673 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:07,674 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:36:07,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836854113] [2021-11-03 04:36:07,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836854113] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:36:07,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369534713] [2021-11-03 04:36:07,674 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-03 04:36:07,674 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:36:07,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:36:07,675 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:36:07,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-03 04:36:07,863 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-03 04:36:07,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:36:07,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-03 04:36:07,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:36:08,115 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:08,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:36:08,657 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:08,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369534713] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:36:08,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [420182573] [2021-11-03 04:36:08,659 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-03 04:36:08,659 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:36:08,660 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:36:08,660 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:36:08,660 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:36:08,665 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:36:08,666 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 04:36:08,669 INFO L180 QuantifierPusher]: treesize reduction 13, result has 60.6 percent of original size [2021-11-03 04:36:08,670 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:36:08,671 INFO L180 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size [2021-11-03 04:36:08,672 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-03 04:36:08,675 INFO L180 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-11-03 04:36:08,676 INFO L185 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-11-03 04:36:08,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:08,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:08,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:08,692 INFO L180 QuantifierPusher]: treesize reduction 8, result has 89.0 percent of original size [2021-11-03 04:36:08,694 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-03 04:36:08,699 INFO L180 QuantifierPusher]: treesize reduction 3, result has 94.9 percent of original size [2021-11-03 04:36:08,701 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-03 04:36:08,707 INFO L180 QuantifierPusher]: treesize reduction 5, result has 92.6 percent of original size [2021-11-03 04:36:08,709 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-03 04:36:08,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:08,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:08,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:08,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:08,722 INFO L180 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-11-03 04:36:08,723 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-03 04:36:08,724 INFO L180 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-11-03 04:36:08,725 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-03 04:36:08,726 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-03 04:36:08,727 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-03 04:36:08,729 INFO L180 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-11-03 04:36:08,731 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-03 04:36:08,732 INFO L180 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-11-03 04:36:08,734 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-03 04:36:08,736 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-03 04:36:08,742 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-03 04:36:08,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:08,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:08,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:08,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:08,752 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:36:09,228 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:36:09,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:36:09,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2021-11-03 04:36:09,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9054096] [2021-11-03 04:36:09,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-03 04:36:09,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:36:09,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-03 04:36:09,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=522, Invalid=960, Unknown=0, NotChecked=0, Total=1482 [2021-11-03 04:36:09,231 INFO L87 Difference]: Start difference. First operand 1944 states and 2251 transitions. Second operand has 32 states, 31 states have (on average 5.774193548387097) internal successors, (179), 32 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:09,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:36:09,824 INFO L93 Difference]: Finished difference Result 9842 states and 11725 transitions. [2021-11-03 04:36:09,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-03 04:36:09,824 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 5.774193548387097) internal successors, (179), 32 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-03 04:36:09,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:36:09,871 INFO L225 Difference]: With dead ends: 9842 [2021-11-03 04:36:09,872 INFO L226 Difference]: Without dead ends: 9841 [2021-11-03 04:36:09,880 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 232 SyntacticMatches, 15 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 980 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=522, Invalid=960, Unknown=0, NotChecked=0, Total=1482 [2021-11-03 04:36:09,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9841 states. [2021-11-03 04:36:10,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9841 to 3730. [2021-11-03 04:36:10,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3730 states, 3727 states have (on average 1.1540112691172524) internal successors, (4301), 3729 states have internal predecessors, (4301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:10,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3730 states to 3730 states and 4301 transitions. [2021-11-03 04:36:10,129 INFO L78 Accepts]: Start accepts. Automaton has 3730 states and 4301 transitions. Word has length 90 [2021-11-03 04:36:10,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:36:10,130 INFO L470 AbstractCegarLoop]: Abstraction has 3730 states and 4301 transitions. [2021-11-03 04:36:10,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 5.774193548387097) internal successors, (179), 32 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:10,130 INFO L276 IsEmpty]: Start isEmpty. Operand 3730 states and 4301 transitions. [2021-11-03 04:36:10,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-03 04:36:10,134 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:36:10,134 INFO L513 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 1, 1, 1] [2021-11-03 04:36:10,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-03 04:36:10,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable160 [2021-11-03 04:36:10,347 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:36:10,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:36:10,348 INFO L85 PathProgramCache]: Analyzing trace with hash 142010192, now seen corresponding path program 4 times [2021-11-03 04:36:10,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:36:10,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418998725] [2021-11-03 04:36:10,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:36:10,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:36:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:36:10,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:10,698 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:36:10,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418998725] [2021-11-03 04:36:10,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418998725] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:36:10,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684080300] [2021-11-03 04:36:10,699 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-03 04:36:10,699 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:36:10,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:36:10,700 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:36:10,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-03 04:36:10,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:36:10,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-03 04:36:10,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:36:11,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:11,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:36:12,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:12,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684080300] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:36:12,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1181269026] [2021-11-03 04:36:12,448 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-03 04:36:12,448 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:36:12,449 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:36:12,449 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:36:12,449 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:36:12,456 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:36:12,457 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 04:36:12,460 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-03 04:36:12,462 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:36:12,463 INFO L180 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size [2021-11-03 04:36:12,464 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:36:12,465 INFO L180 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size [2021-11-03 04:36:12,466 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-03 04:36:12,467 INFO L180 QuantifierPusher]: treesize reduction 7, result has 80.6 percent of original size [2021-11-03 04:36:12,469 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:36:12,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:12,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:12,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:12,481 INFO L180 QuantifierPusher]: treesize reduction 11, result has 80.7 percent of original size [2021-11-03 04:36:12,482 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-03 04:36:12,484 INFO L180 QuantifierPusher]: treesize reduction 9, result has 84.5 percent of original size [2021-11-03 04:36:12,485 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:36:12,488 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:36:12,490 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-03 04:36:12,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:12,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:12,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:12,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:12,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:12,506 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-11-03 04:36:12,507 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-03 04:36:12,508 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-03 04:36:12,509 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:36:12,510 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:36:12,512 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-03 04:36:12,515 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-11-03 04:36:12,516 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-03 04:36:12,517 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-03 04:36:12,518 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:36:12,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:12,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:12,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:12,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:12,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:12,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:12,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:12,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:12,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:12,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:12,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:12,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:12,555 INFO L180 QuantifierPusher]: treesize reduction 5, result has 94.6 percent of original size [2021-11-03 04:36:12,557 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:36:12,558 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:36:12,560 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 04:36:12,562 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-03 04:36:12,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:12,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:12,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:12,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:12,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:12,571 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:36:12,870 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:36:12,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:36:12,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2021-11-03 04:36:12,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232683131] [2021-11-03 04:36:12,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-03 04:36:12,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:36:12,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-03 04:36:12,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1162, Invalid=1918, Unknown=0, NotChecked=0, Total=3080 [2021-11-03 04:36:12,874 INFO L87 Difference]: Start difference. First operand 3730 states and 4301 transitions. Second operand has 48 states, 47 states have (on average 5.808510638297872) internal successors, (273), 48 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:13,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:36:13,999 INFO L93 Difference]: Finished difference Result 26438 states and 31923 transitions. [2021-11-03 04:36:14,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-03 04:36:14,000 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.808510638297872) internal successors, (273), 48 states have internal predecessors, (273), 0 states have call successors, (0), 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 137 [2021-11-03 04:36:14,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:36:14,097 INFO L225 Difference]: With dead ends: 26438 [2021-11-03 04:36:14,097 INFO L226 Difference]: Without dead ends: 26436 [2021-11-03 04:36:14,117 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1162, Invalid=1918, Unknown=0, NotChecked=0, Total=3080 [2021-11-03 04:36:14,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26436 states. [2021-11-03 04:36:14,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26436 to 7992. [2021-11-03 04:36:14,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7992 states, 7989 states have (on average 1.142946551508324) internal successors, (9131), 7991 states have internal predecessors, (9131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:14,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7992 states to 7992 states and 9131 transitions. [2021-11-03 04:36:14,713 INFO L78 Accepts]: Start accepts. Automaton has 7992 states and 9131 transitions. Word has length 137 [2021-11-03 04:36:14,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:36:14,714 INFO L470 AbstractCegarLoop]: Abstraction has 7992 states and 9131 transitions. [2021-11-03 04:36:14,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.808510638297872) internal successors, (273), 48 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:14,714 INFO L276 IsEmpty]: Start isEmpty. Operand 7992 states and 9131 transitions. [2021-11-03 04:36:14,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-03 04:36:14,723 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:36:14,723 INFO L513 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 1, 1, 1] [2021-11-03 04:36:14,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-03 04:36:14,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable172 [2021-11-03 04:36:14,939 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:36:14,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:36:14,940 INFO L85 PathProgramCache]: Analyzing trace with hash -397887212, now seen corresponding path program 4 times [2021-11-03 04:36:14,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:36:14,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458132446] [2021-11-03 04:36:14,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:36:14,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:36:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:36:15,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 0 proven. 2730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:15,494 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:36:15,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458132446] [2021-11-03 04:36:15,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458132446] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:36:15,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993734842] [2021-11-03 04:36:15,495 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-03 04:36:15,495 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:36:15,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:36:15,501 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:36:15,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-03 04:36:15,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:36:15,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-03 04:36:15,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:36:16,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 0 proven. 2730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:16,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:36:18,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 0 proven. 2730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:18,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993734842] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:36:18,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1837492769] [2021-11-03 04:36:18,034 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-03 04:36:18,034 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:36:18,035 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:36:18,035 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:36:18,035 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:36:18,038 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:36:18,038 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 04:36:18,041 INFO L180 QuantifierPusher]: treesize reduction 13, result has 60.6 percent of original size [2021-11-03 04:36:18,042 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:36:18,043 INFO L180 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size [2021-11-03 04:36:18,044 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-03 04:36:18,045 INFO L180 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-11-03 04:36:18,046 INFO L185 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-11-03 04:36:18,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:18,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:18,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:18,055 INFO L180 QuantifierPusher]: treesize reduction 8, result has 89.0 percent of original size [2021-11-03 04:36:18,057 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-03 04:36:18,058 INFO L180 QuantifierPusher]: treesize reduction 3, result has 94.9 percent of original size [2021-11-03 04:36:18,060 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-03 04:36:18,061 INFO L180 QuantifierPusher]: treesize reduction 5, result has 92.6 percent of original size [2021-11-03 04:36:18,063 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-03 04:36:18,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:18,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:18,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:18,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:18,073 INFO L180 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-11-03 04:36:18,074 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-03 04:36:18,075 INFO L180 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-11-03 04:36:18,076 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-03 04:36:18,077 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-03 04:36:18,078 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-03 04:36:18,080 INFO L180 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-11-03 04:36:18,081 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-03 04:36:18,082 INFO L180 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-11-03 04:36:18,083 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-03 04:36:18,085 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-03 04:36:18,086 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-03 04:36:18,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:18,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:18,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:18,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:18,093 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:36:19,066 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:36:19,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:36:19,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 63 [2021-11-03 04:36:19,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452765849] [2021-11-03 04:36:19,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-03 04:36:19,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:36:19,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-03 04:36:19,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2042, Invalid=2928, Unknown=0, NotChecked=0, Total=4970 [2021-11-03 04:36:19,070 INFO L87 Difference]: Start difference. First operand 7992 states and 9131 transitions. Second operand has 64 states, 63 states have (on average 5.888888888888889) internal successors, (371), 64 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:21,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:36:21,274 INFO L93 Difference]: Finished difference Result 65014 states and 75717 transitions. [2021-11-03 04:36:21,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-03 04:36:21,274 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 5.888888888888889) internal successors, (371), 64 states have internal predecessors, (371), 0 states have call successors, (0), 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 186 [2021-11-03 04:36:21,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:36:21,391 INFO L225 Difference]: With dead ends: 65014 [2021-11-03 04:36:21,391 INFO L226 Difference]: Without dead ends: 65013 [2021-11-03 04:36:21,424 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 488 SyntacticMatches, 31 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3524 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2042, Invalid=2928, Unknown=0, NotChecked=0, Total=4970 [2021-11-03 04:36:21,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65013 states. [2021-11-03 04:36:22,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65013 to 15146. [2021-11-03 04:36:22,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15146 states, 15143 states have (on average 1.139866605032028) internal successors, (17261), 15145 states have internal predecessors, (17261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:22,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15146 states to 15146 states and 17261 transitions. [2021-11-03 04:36:22,800 INFO L78 Accepts]: Start accepts. Automaton has 15146 states and 17261 transitions. Word has length 186 [2021-11-03 04:36:22,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:36:22,800 INFO L470 AbstractCegarLoop]: Abstraction has 15146 states and 17261 transitions. [2021-11-03 04:36:22,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 5.888888888888889) internal successors, (371), 64 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:22,801 INFO L276 IsEmpty]: Start isEmpty. Operand 15146 states and 17261 transitions. [2021-11-03 04:36:22,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-11-03 04:36:22,814 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:36:22,814 INFO L513 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 1, 1, 1] [2021-11-03 04:36:22,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-03 04:36:23,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:36:23,031 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:36:23,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:36:23,031 INFO L85 PathProgramCache]: Analyzing trace with hash 978507432, now seen corresponding path program 5 times [2021-11-03 04:36:23,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:36:23,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522956968] [2021-11-03 04:36:23,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:36:23,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:36:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:36:24,288 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:24,288 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:36:24,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522956968] [2021-11-03 04:36:24,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522956968] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:36:24,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905470425] [2021-11-03 04:36:24,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:36:24,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:36:24,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:36:24,289 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:36:24,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-03 04:36:24,787 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2021-11-03 04:36:24,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:36:24,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-03 04:36:24,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:36:25,554 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:25,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:36:28,577 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:28,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905470425] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:36:28,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [593031001] [2021-11-03 04:36:28,579 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-03 04:36:28,579 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:36:28,579 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:36:28,579 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:36:28,579 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:36:28,599 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:36:28,600 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 04:36:28,603 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-03 04:36:28,611 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:36:28,613 INFO L180 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size [2021-11-03 04:36:28,614 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-03 04:36:28,615 INFO L180 QuantifierPusher]: treesize reduction 10, result has 68.8 percent of original size [2021-11-03 04:36:28,616 INFO L185 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size 13 [2021-11-03 04:36:28,617 INFO L180 QuantifierPusher]: treesize reduction 3, result has 90.6 percent of original size [2021-11-03 04:36:28,619 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:36:28,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:28,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:28,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:28,627 INFO L180 QuantifierPusher]: treesize reduction 11, result has 80.7 percent of original size [2021-11-03 04:36:28,628 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-03 04:36:28,629 INFO L180 QuantifierPusher]: treesize reduction 9, result has 84.5 percent of original size [2021-11-03 04:36:28,631 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:36:28,632 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:36:28,634 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-03 04:36:28,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:28,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:28,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:28,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:28,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:28,644 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-11-03 04:36:28,645 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-03 04:36:28,645 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-03 04:36:28,647 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:36:28,648 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:36:28,649 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-03 04:36:28,651 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-11-03 04:36:28,652 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-03 04:36:28,655 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-03 04:36:28,656 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:36:28,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:28,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:28,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:28,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:28,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:28,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:28,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:28,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:28,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:28,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:28,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:28,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:28,686 INFO L180 QuantifierPusher]: treesize reduction 5, result has 94.6 percent of original size [2021-11-03 04:36:28,688 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:36:28,690 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:36:28,692 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 04:36:28,693 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-03 04:36:28,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:28,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:28,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:28,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:28,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:28,701 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:36:29,089 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:36:29,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:36:29,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2021-11-03 04:36:29,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37263221] [2021-11-03 04:36:29,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-11-03 04:36:29,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:36:29,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-11-03 04:36:29,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4594, Invalid=6118, Unknown=0, NotChecked=0, Total=10712 [2021-11-03 04:36:29,097 INFO L87 Difference]: Start difference. First operand 15146 states and 17261 transitions. Second operand has 96 states, 95 states have (on average 5.905263157894737) internal successors, (561), 96 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:34,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:36:34,523 INFO L93 Difference]: Finished difference Result 182334 states and 213859 transitions. [2021-11-03 04:36:34,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-11-03 04:36:34,524 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 5.905263157894737) internal successors, (561), 96 states have internal predecessors, (561), 0 states have call successors, (0), 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 281 [2021-11-03 04:36:34,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:36:34,801 INFO L225 Difference]: With dead ends: 182334 [2021-11-03 04:36:34,801 INFO L226 Difference]: Without dead ends: 182332 [2021-11-03 04:36:34,841 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 889 GetRequests, 787 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1129 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=4594, Invalid=6118, Unknown=0, NotChecked=0, Total=10712 [2021-11-03 04:36:35,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182332 states. [2021-11-03 04:36:37,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182332 to 32376. [2021-11-03 04:36:37,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32376 states, 32373 states have (on average 1.134124115775492) internal successors, (36715), 32375 states have internal predecessors, (36715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:37,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32376 states to 32376 states and 36715 transitions. [2021-11-03 04:36:37,490 INFO L78 Accepts]: Start accepts. Automaton has 32376 states and 36715 transitions. Word has length 281 [2021-11-03 04:36:37,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:36:37,490 INFO L470 AbstractCegarLoop]: Abstraction has 32376 states and 36715 transitions. [2021-11-03 04:36:37,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 5.905263157894737) internal successors, (561), 96 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:37,491 INFO L276 IsEmpty]: Start isEmpty. Operand 32376 states and 36715 transitions. [2021-11-03 04:36:37,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2021-11-03 04:36:37,516 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:36:37,517 INFO L513 BasicCegarLoop]: trace histogram [63, 63, 63, 62, 62, 62, 1, 1, 1] [2021-11-03 04:36:37,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-03 04:36:37,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable210 [2021-11-03 04:36:37,731 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:36:37,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:36:37,731 INFO L85 PathProgramCache]: Analyzing trace with hash 542228148, now seen corresponding path program 5 times [2021-11-03 04:36:37,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:36:37,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356959857] [2021-11-03 04:36:37,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:36:37,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:36:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:36:39,744 INFO L134 CoverageAnalysis]: Checked inductivity of 11594 backedges. 0 proven. 11594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:39,744 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:36:39,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356959857] [2021-11-03 04:36:39,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356959857] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:36:39,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755936029] [2021-11-03 04:36:39,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:36:39,745 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:36:39,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:36:39,745 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:36:39,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-03 04:36:40,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2021-11-03 04:36:40,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:36:40,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 64 conjunts are in the unsatisfiable core [2021-11-03 04:36:40,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:36:41,542 INFO L134 CoverageAnalysis]: Checked inductivity of 11594 backedges. 0 proven. 11594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:41,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:36:46,606 INFO L134 CoverageAnalysis]: Checked inductivity of 11594 backedges. 0 proven. 11594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:46,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755936029] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:36:46,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [718602821] [2021-11-03 04:36:46,608 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-03 04:36:46,608 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:36:46,609 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:36:46,609 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:36:46,609 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:36:46,614 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:36:46,615 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 04:36:46,617 INFO L180 QuantifierPusher]: treesize reduction 13, result has 60.6 percent of original size [2021-11-03 04:36:46,625 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:36:46,626 INFO L180 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size [2021-11-03 04:36:46,627 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-03 04:36:46,636 INFO L180 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-11-03 04:36:46,647 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-03 04:36:46,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:46,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:46,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:46,663 INFO L180 QuantifierPusher]: treesize reduction 15, result has 77.6 percent of original size [2021-11-03 04:36:46,665 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-03 04:36:46,666 INFO L180 QuantifierPusher]: treesize reduction 3, result has 94.6 percent of original size [2021-11-03 04:36:46,668 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:36:46,670 INFO L180 QuantifierPusher]: treesize reduction 5, result has 92.3 percent of original size [2021-11-03 04:36:46,671 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-03 04:36:46,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:46,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:46,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:46,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:46,692 INFO L180 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-11-03 04:36:46,693 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-03 04:36:46,694 INFO L180 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-11-03 04:36:46,695 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-03 04:36:46,696 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-03 04:36:46,697 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-03 04:36:46,700 INFO L180 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-11-03 04:36:46,701 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-03 04:36:46,703 INFO L180 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-11-03 04:36:46,704 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-03 04:36:46,706 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-03 04:36:46,707 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-03 04:36:46,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:46,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:46,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:46,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:46,715 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:36:48,972 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:36:48,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:36:48,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 127 [2021-11-03 04:36:48,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418257301] [2021-11-03 04:36:48,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2021-11-03 04:36:48,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:36:48,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2021-11-03 04:36:48,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8154, Invalid=9936, Unknown=0, NotChecked=0, Total=18090 [2021-11-03 04:36:48,985 INFO L87 Difference]: Start difference. First operand 32376 states and 36715 transitions. Second operand has 128 states, 127 states have (on average 5.94488188976378) internal successors, (755), 128 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:37:08,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:37:08,800 INFO L93 Difference]: Finished difference Result 464894 states and 533221 transitions. [2021-11-03 04:37:08,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2021-11-03 04:37:08,801 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 127 states have (on average 5.94488188976378) internal successors, (755), 128 states have internal predecessors, (755), 0 states have call successors, (0), 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 378 [2021-11-03 04:37:08,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:37:09,539 INFO L225 Difference]: With dead ends: 464894 [2021-11-03 04:37:09,539 INFO L226 Difference]: Without dead ends: 464893 [2021-11-03 04:37:09,676 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1196 GetRequests, 1000 SyntacticMatches, 63 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13220 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=8154, Invalid=9936, Unknown=0, NotChecked=0, Total=18090 [2021-11-03 04:37:09,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464893 states. [2021-11-03 04:37:18,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464893 to 61018. [2021-11-03 04:37:18,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61018 states, 61015 states have (on average 1.1325247889863148) internal successors, (69101), 61017 states have internal predecessors, (69101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:37:18,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61018 states to 61018 states and 69101 transitions. [2021-11-03 04:37:18,528 INFO L78 Accepts]: Start accepts. Automaton has 61018 states and 69101 transitions. Word has length 378 [2021-11-03 04:37:18,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:37:18,529 INFO L470 AbstractCegarLoop]: Abstraction has 61018 states and 69101 transitions. [2021-11-03 04:37:18,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 127 states have (on average 5.94488188976378) internal successors, (755), 128 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:37:18,530 INFO L276 IsEmpty]: Start isEmpty. Operand 61018 states and 69101 transitions. [2021-11-03 04:37:18,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2021-11-03 04:37:18,598 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:37:18,598 INFO L513 BasicCegarLoop]: trace histogram [95, 95, 94, 94, 94, 94, 1, 1, 1] [2021-11-03 04:37:18,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-03 04:37:18,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:37:18,811 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:37:18,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:37:18,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1183505064, now seen corresponding path program 6 times [2021-11-03 04:37:18,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:37:18,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189846178] [2021-11-03 04:37:18,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:37:18,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:37:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:37:22,341 INFO L134 CoverageAnalysis]: Checked inductivity of 26508 backedges. 0 proven. 26508 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:37:22,342 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:37:22,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189846178] [2021-11-03 04:37:22,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189846178] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:37:22,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879167335] [2021-11-03 04:37:22,342 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-03 04:37:22,343 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:37:22,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:37:22,356 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:37:22,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb17765f-04d8-4ec2-8c7d-671970da0a07/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-03 04:37:23,403 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-03 04:37:23,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:37:23,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 96 conjunts are in the unsatisfiable core [2021-11-03 04:37:23,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:37:24,787 INFO L134 CoverageAnalysis]: Checked inductivity of 26508 backedges. 0 proven. 26508 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:37:24,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:37:34,799 INFO L134 CoverageAnalysis]: Checked inductivity of 26508 backedges. 0 proven. 26508 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:37:34,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879167335] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:37:34,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1868270698] [2021-11-03 04:37:34,802 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-03 04:37:34,802 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:37:34,802 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:37:34,802 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:37:34,803 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:37:34,807 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:37:34,808 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 04:37:34,811 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-03 04:37:34,813 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:37:34,815 INFO L180 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size [2021-11-03 04:37:34,816 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:37:34,817 INFO L180 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size [2021-11-03 04:37:34,818 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-03 04:37:34,820 INFO L180 QuantifierPusher]: treesize reduction 7, result has 80.6 percent of original size [2021-11-03 04:37:34,821 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:37:34,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:37:34,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:37:34,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:37:34,833 INFO L180 QuantifierPusher]: treesize reduction 11, result has 80.7 percent of original size [2021-11-03 04:37:34,835 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-03 04:37:34,836 INFO L180 QuantifierPusher]: treesize reduction 9, result has 84.5 percent of original size [2021-11-03 04:37:34,838 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:37:34,840 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:37:34,851 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-03 04:37:34,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:37:34,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:37:34,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:37:34,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:37:34,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:37:34,860 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-11-03 04:37:34,861 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-03 04:37:34,862 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-03 04:37:34,863 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:37:34,864 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:37:34,865 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-03 04:37:34,868 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-11-03 04:37:34,868 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-03 04:37:34,870 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-03 04:37:34,871 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:37:34,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:37:34,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:37:34,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:37:34,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:37:34,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:37:34,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:37:34,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:37:34,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:37:34,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:37:34,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:37:34,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:37:34,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:37:34,900 INFO L180 QuantifierPusher]: treesize reduction 5, result has 94.6 percent of original size [2021-11-03 04:37:34,903 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:37:34,904 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:37:34,906 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 04:37:34,907 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-03 04:37:34,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:37:34,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:37:34,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:37:34,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:37:34,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:37:34,915 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:37:35,473 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:37:35,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:37:35,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2021-11-03 04:37:35,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229511679] [2021-11-03 04:37:35,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-11-03 04:37:35,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:37:35,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-11-03 04:37:35,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18370, Invalid=21430, Unknown=0, NotChecked=0, Total=39800 [2021-11-03 04:37:35,482 INFO L87 Difference]: Start difference. First operand 61018 states and 69101 transitions. Second operand has 192 states, 191 states have (on average 5.952879581151833) internal successors, (1137), 192 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)