./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P --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 33be026e9ca846df0a8faa91fc9c2bbf64ee20dbba0f4f48a9cd42fbefb372d5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:48:56,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:48:56,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:48:56,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:48:56,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:48:56,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:48:56,098 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:48:56,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:48:56,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:48:56,104 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:48:56,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:48:56,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:48:56,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:48:56,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:48:56,110 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:48:56,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:48:56,112 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:48:56,113 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:48:56,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:48:56,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:48:56,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:48:56,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:48:56,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:48:56,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:48:56,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:48:56,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:48:56,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:48:56,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:48:56,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:48:56,131 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:48:56,131 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:48:56,132 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:48:56,133 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:48:56,134 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:48:56,135 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:48:56,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:48:56,137 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:48:56,137 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:48:56,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:48:56,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:48:56,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:48:56,143 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-21 01:48:56,169 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:48:56,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:48:56,170 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:48:56,170 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:48:56,171 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:48:56,171 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:48:56,171 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:48:56,172 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:48:56,172 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:48:56,172 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:48:56,172 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:48:56,172 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:48:56,172 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:48:56,173 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:48:56,173 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:48:56,173 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:48:56,173 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:48:56,173 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:48:56,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:48:56,174 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 01:48:56,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:48:56,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:48:56,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:48:56,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:48:56,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:48:56,175 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-21 01:48:56,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:48:56,176 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:48:56,176 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:48:56,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:48:56,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:48:56,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:48:56,177 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:48:56,177 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:48:56,177 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:48:56,177 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:48:56,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:48:56,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:48:56,178 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:48:56,178 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:48:56,178 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_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33be026e9ca846df0a8faa91fc9c2bbf64ee20dbba0f4f48a9cd42fbefb372d5 [2021-11-21 01:48:56,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:48:56,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:48:56,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:48:56,463 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:48:56,464 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:48:56,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2021-11-21 01:48:56,538 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/data/ae54d32d6/84286204ab144a8197bb6c7e56056378/FLAGecfa7c3e9 [2021-11-21 01:48:57,020 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:48:57,021 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2021-11-21 01:48:57,027 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/data/ae54d32d6/84286204ab144a8197bb6c7e56056378/FLAGecfa7c3e9 [2021-11-21 01:48:57,393 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/data/ae54d32d6/84286204ab144a8197bb6c7e56056378 [2021-11-21 01:48:57,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:48:57,411 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:48:57,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:48:57,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:48:57,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:48:57,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:48:57" (1/1) ... [2021-11-21 01:48:57,419 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dd71a18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:57, skipping insertion in model container [2021-11-21 01:48:57,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:48:57" (1/1) ... [2021-11-21 01:48:57,427 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:48:57,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:48:57,620 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:48:57,628 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:48:57,655 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:48:57,667 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:48:57,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:57 WrapperNode [2021-11-21 01:48:57,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:48:57,670 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:48:57,670 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:48:57,671 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:48:57,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:57" (1/1) ... [2021-11-21 01:48:57,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:57" (1/1) ... [2021-11-21 01:48:57,707 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2021-11-21 01:48:57,708 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:48:57,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:48:57,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:48:57,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:48:57,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:57" (1/1) ... [2021-11-21 01:48:57,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:57" (1/1) ... [2021-11-21 01:48:57,720 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:57" (1/1) ... [2021-11-21 01:48:57,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:57" (1/1) ... [2021-11-21 01:48:57,729 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:57" (1/1) ... [2021-11-21 01:48:57,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:57" (1/1) ... [2021-11-21 01:48:57,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:57" (1/1) ... [2021-11-21 01:48:57,744 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:48:57,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:48:57,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:48:57,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:48:57,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:57" (1/1) ... [2021-11-21 01:48:57,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:48:57,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:48:57,788 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:48:57,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:48:57,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:48:57,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:48:57,901 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:48:57,903 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:48:58,016 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:48:58,034 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:48:58,034 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-21 01:48:58,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:48:58 BoogieIcfgContainer [2021-11-21 01:48:58,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:48:58,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:48:58,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:48:58,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:48:58,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:48:57" (1/3) ... [2021-11-21 01:48:58,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1311ccca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:48:58, skipping insertion in model container [2021-11-21 01:48:58,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:57" (2/3) ... [2021-11-21 01:48:58,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1311ccca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:48:58, skipping insertion in model container [2021-11-21 01:48:58,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:48:58" (3/3) ... [2021-11-21 01:48:58,046 INFO L111 eAbstractionObserver]: Analyzing ICFG LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2021-11-21 01:48:58,052 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:48:58,052 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-21 01:48:58,104 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:48:58,112 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 [2021-11-21 01:48:58,112 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-21 01:48:58,128 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:48:58,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-21 01:48:58,133 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:48:58,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-21 01:48:58,134 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:48:58,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:48:58,143 INFO L85 PathProgramCache]: Analyzing trace with hash 2537489, now seen corresponding path program 1 times [2021-11-21 01:48:58,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:48:58,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994760215] [2021-11-21 01:48:58,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:48:58,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:48:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:48:58,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:48:58,299 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:48:58,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994760215] [2021-11-21 01:48:58,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994760215] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:48:58,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:48:58,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-21 01:48:58,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779643848] [2021-11-21 01:48:58,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:48:58,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:48:58,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:48:58,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:48:58,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:48:58,339 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:48:58,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:48:58,456 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2021-11-21 01:48:58,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:48:58,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-21 01:48:58,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:48:58,467 INFO L225 Difference]: With dead ends: 35 [2021-11-21 01:48:58,468 INFO L226 Difference]: Without dead ends: 30 [2021-11-21 01:48:58,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:48:58,475 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 14 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:48:58,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 13 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:48:58,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-21 01:48:58,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2021-11-21 01:48:58,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:48:58,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2021-11-21 01:48:58,536 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 4 [2021-11-21 01:48:58,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:48:58,536 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2021-11-21 01:48:58,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:48:58,537 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2021-11-21 01:48:58,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 01:48:58,538 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:48:58,538 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-21 01:48:58,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:48:58,539 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:48:58,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:48:58,540 INFO L85 PathProgramCache]: Analyzing trace with hash 78662207, now seen corresponding path program 1 times [2021-11-21 01:48:58,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:48:58,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585715108] [2021-11-21 01:48:58,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:48:58,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:48:58,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:48:58,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:48:58,604 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:48:58,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585715108] [2021-11-21 01:48:58,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585715108] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:48:58,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:48:58,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:48:58,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675115262] [2021-11-21 01:48:58,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:48:58,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:48:58,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:48:58,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:48:58,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:48:58,608 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:48:58,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:48:58,643 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2021-11-21 01:48:58,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:48:58,644 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 [2021-11-21 01:48:58,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:48:58,645 INFO L225 Difference]: With dead ends: 30 [2021-11-21 01:48:58,645 INFO L226 Difference]: Without dead ends: 29 [2021-11-21 01:48:58,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:48:58,648 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:48:58,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:48:58,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-21 01:48:58,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-21 01:48:58,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.619047619047619) internal successors, (34), 28 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:48:58,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2021-11-21 01:48:58,664 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 5 [2021-11-21 01:48:58,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:48:58,664 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2021-11-21 01:48:58,665 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) [2021-11-21 01:48:58,665 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2021-11-21 01:48:58,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-21 01:48:58,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:48:58,666 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:48:58,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:48:58,666 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:48:58,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:48:58,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1715027665, now seen corresponding path program 1 times [2021-11-21 01:48:58,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:48:58,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077321456] [2021-11-21 01:48:58,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:48:58,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:48:58,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:48:58,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:48:58,722 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:48:58,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077321456] [2021-11-21 01:48:58,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077321456] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:48:58,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:48:58,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:48:58,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650063758] [2021-11-21 01:48:58,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:48:58,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:48:58,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:48:58,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:48:58,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:48:58,725 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2021-11-21 01:48:58,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:48:58,815 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2021-11-21 01:48:58,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:48:58,815 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 [2021-11-21 01:48:58,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:48:58,818 INFO L225 Difference]: With dead ends: 48 [2021-11-21 01:48:58,818 INFO L226 Difference]: Without dead ends: 47 [2021-11-21 01:48:58,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:48:58,839 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 24 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:48:58,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 16 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:48:58,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-21 01:48:58,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 37. [2021-11-21 01:48:58,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 36 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:48:58,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2021-11-21 01:48:58,848 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 7 [2021-11-21 01:48:58,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:48:58,849 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2021-11-21 01:48:58,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2021-11-21 01:48:58,849 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2021-11-21 01:48:58,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-21 01:48:58,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:48:58,850 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:48:58,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:48:58,850 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:48:58,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:48:58,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1715028575, now seen corresponding path program 1 times [2021-11-21 01:48:58,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:48:58,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116807817] [2021-11-21 01:48:58,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:48:58,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:48:58,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:48:58,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:48:58,921 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:48:58,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116807817] [2021-11-21 01:48:58,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116807817] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:48:58,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:48:58,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:48:58,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715166481] [2021-11-21 01:48:58,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:48:58,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:48:58,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:48:58,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:48:58,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:48:58,927 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2021-11-21 01:48:59,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:48:59,001 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2021-11-21 01:48:59,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:48:59,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 [2021-11-21 01:48:59,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:48:59,003 INFO L225 Difference]: With dead ends: 63 [2021-11-21 01:48:59,004 INFO L226 Difference]: Without dead ends: 61 [2021-11-21 01:48:59,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:48:59,006 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 22 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:48:59,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 22 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:48:59,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-21 01:48:59,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 42. [2021-11-21 01:48:59,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 41 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:48:59,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 56 transitions. [2021-11-21 01:48:59,017 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 56 transitions. Word has length 7 [2021-11-21 01:48:59,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:48:59,018 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 56 transitions. [2021-11-21 01:48:59,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2021-11-21 01:48:59,019 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 56 transitions. [2021-11-21 01:48:59,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 01:48:59,019 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:48:59,019 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:48:59,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:48:59,020 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:48:59,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:48:59,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1626249991, now seen corresponding path program 1 times [2021-11-21 01:48:59,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:48:59,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240310179] [2021-11-21 01:48:59,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:48:59,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:48:59,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:48:59,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:48:59,078 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:48:59,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240310179] [2021-11-21 01:48:59,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240310179] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:48:59,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:48:59,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:48:59,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973137293] [2021-11-21 01:48:59,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:48:59,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:48:59,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:48:59,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:48:59,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:48:59,081 INFO L87 Difference]: Start difference. First operand 42 states and 56 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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) [2021-11-21 01:48:59,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:48:59,168 INFO L93 Difference]: Finished difference Result 59 states and 76 transitions. [2021-11-21 01:48:59,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:48:59,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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 [2021-11-21 01:48:59,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:48:59,170 INFO L225 Difference]: With dead ends: 59 [2021-11-21 01:48:59,171 INFO L226 Difference]: Without dead ends: 58 [2021-11-21 01:48:59,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:48:59,173 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 21 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:48:59,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 19 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:48:59,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-21 01:48:59,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2021-11-21 01:48:59,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.6511627906976745) internal successors, (71), 50 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:48:59,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 71 transitions. [2021-11-21 01:48:59,183 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 71 transitions. Word has length 8 [2021-11-21 01:48:59,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:48:59,184 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 71 transitions. [2021-11-21 01:48:59,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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) [2021-11-21 01:48:59,184 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 71 transitions. [2021-11-21 01:48:59,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 01:48:59,185 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:48:59,185 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:48:59,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:48:59,186 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:48:59,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:48:59,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1626278212, now seen corresponding path program 1 times [2021-11-21 01:48:59,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:48:59,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290813192] [2021-11-21 01:48:59,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:48:59,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:48:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:48:59,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:48:59,221 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:48:59,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290813192] [2021-11-21 01:48:59,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290813192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:48:59,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:48:59,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:48:59,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199512888] [2021-11-21 01:48:59,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:48:59,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:48:59,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:48:59,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:48:59,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:48:59,225 INFO L87 Difference]: Start difference. First operand 51 states and 71 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-11-21 01:48:59,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:48:59,283 INFO L93 Difference]: Finished difference Result 96 states and 135 transitions. [2021-11-21 01:48:59,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:48:59,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 [2021-11-21 01:48:59,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:48:59,285 INFO L225 Difference]: With dead ends: 96 [2021-11-21 01:48:59,286 INFO L226 Difference]: Without dead ends: 94 [2021-11-21 01:48:59,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:48:59,288 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 29 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:48:59,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 20 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:48:59,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-11-21 01:48:59,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 86. [2021-11-21 01:48:59,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 78 states have (on average 1.5769230769230769) internal successors, (123), 85 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:48:59,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 123 transitions. [2021-11-21 01:48:59,304 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 123 transitions. Word has length 8 [2021-11-21 01:48:59,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:48:59,305 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 123 transitions. [2021-11-21 01:48:59,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-11-21 01:48:59,305 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 123 transitions. [2021-11-21 01:48:59,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 01:48:59,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:48:59,306 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:48:59,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:48:59,307 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:48:59,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:48:59,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1124983043, now seen corresponding path program 1 times [2021-11-21 01:48:59,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:48:59,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451672295] [2021-11-21 01:48:59,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:48:59,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:48:59,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:48:59,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:48:59,335 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:48:59,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451672295] [2021-11-21 01:48:59,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451672295] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:48:59,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:48:59,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-21 01:48:59,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697241569] [2021-11-21 01:48:59,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:48:59,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:48:59,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:48:59,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:48:59,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:48:59,339 INFO L87 Difference]: Start difference. First operand 86 states and 123 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:48:59,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:48:59,354 INFO L93 Difference]: Finished difference Result 86 states and 123 transitions. [2021-11-21 01:48:59,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:48:59,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-21 01:48:59,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:48:59,357 INFO L225 Difference]: With dead ends: 86 [2021-11-21 01:48:59,357 INFO L226 Difference]: Without dead ends: 85 [2021-11-21 01:48:59,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:48:59,359 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:48:59,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:48:59,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-21 01:48:59,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-11-21 01:48:59,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 78 states have (on average 1.5) internal successors, (117), 84 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:48:59,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 117 transitions. [2021-11-21 01:48:59,373 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 117 transitions. Word has length 9 [2021-11-21 01:48:59,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:48:59,374 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 117 transitions. [2021-11-21 01:48:59,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:48:59,374 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 117 transitions. [2021-11-21 01:48:59,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-21 01:48:59,375 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:48:59,375 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:48:59,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:48:59,376 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:48:59,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:48:59,377 INFO L85 PathProgramCache]: Analyzing trace with hash 514736030, now seen corresponding path program 1 times [2021-11-21 01:48:59,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:48:59,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441237914] [2021-11-21 01:48:59,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:48:59,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:48:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:48:59,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:48:59,408 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:48:59,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441237914] [2021-11-21 01:48:59,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441237914] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:48:59,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:48:59,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:48:59,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883335252] [2021-11-21 01:48:59,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:48:59,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:48:59,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:48:59,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:48:59,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:48:59,411 INFO L87 Difference]: Start difference. First operand 85 states and 117 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:48:59,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:48:59,442 INFO L93 Difference]: Finished difference Result 85 states and 117 transitions. [2021-11-21 01:48:59,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:48:59,443 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-21 01:48:59,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:48:59,445 INFO L225 Difference]: With dead ends: 85 [2021-11-21 01:48:59,445 INFO L226 Difference]: Without dead ends: 84 [2021-11-21 01:48:59,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:48:59,447 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 14 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:48:59,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 15 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:48:59,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-11-21 01:48:59,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-11-21 01:48:59,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 78 states have (on average 1.4230769230769231) internal successors, (111), 83 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:48:59,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 111 transitions. [2021-11-21 01:48:59,459 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 111 transitions. Word has length 10 [2021-11-21 01:48:59,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:48:59,460 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 111 transitions. [2021-11-21 01:48:59,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:48:59,461 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 111 transitions. [2021-11-21 01:48:59,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 01:48:59,461 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:48:59,462 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-21 01:48:59,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 01:48:59,462 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:48:59,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:48:59,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1939177669, now seen corresponding path program 1 times [2021-11-21 01:48:59,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:48:59,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571840011] [2021-11-21 01:48:59,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:48:59,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:48:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:48:59,549 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:48:59,550 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:48:59,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571840011] [2021-11-21 01:48:59,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571840011] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:48:59,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053784502] [2021-11-21 01:48:59,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:48:59,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:48:59,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:48:59,555 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:48:59,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:48:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:48:59,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 01:48:59,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:48:59,833 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:48:59,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:48:59,995 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:48:59,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053784502] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:48:59,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [623196091] [2021-11-21 01:49:00,017 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-21 01:49:00,017 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:49:00,022 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:49:00,028 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:49:00,029 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:49:00,794 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:49:01,075 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:49:01,075 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:49:01,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2021-11-21 01:49:01,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80525943] [2021-11-21 01:49:01,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:49:01,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:49:01,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:49:01,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:49:01,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-11-21 01:49:01,078 INFO L87 Difference]: Start difference. First operand 84 states and 111 transitions. Second operand has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:01,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:49:01,485 INFO L93 Difference]: Finished difference Result 214 states and 281 transitions. [2021-11-21 01:49:01,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-21 01:49:01,489 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 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 [2021-11-21 01:49:01,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:49:01,490 INFO L225 Difference]: With dead ends: 214 [2021-11-21 01:49:01,490 INFO L226 Difference]: Without dead ends: 213 [2021-11-21 01:49:01,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=235, Invalid=821, Unknown=0, NotChecked=0, Total=1056 [2021-11-21 01:49:01,492 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 248 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:49:01,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 25 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:49:01,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-11-21 01:49:01,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 143. [2021-11-21 01:49:01,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 137 states have (on average 1.3868613138686132) internal successors, (190), 142 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:01,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 190 transitions. [2021-11-21 01:49:01,533 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 190 transitions. Word has length 13 [2021-11-21 01:49:01,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:49:01,533 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 190 transitions. [2021-11-21 01:49:01,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:01,534 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 190 transitions. [2021-11-21 01:49:01,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-21 01:49:01,535 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:49:01,535 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-11-21 01:49:01,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:49:01,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-21 01:49:01,751 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:49:01,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:49:01,751 INFO L85 PathProgramCache]: Analyzing trace with hash -15034333, now seen corresponding path program 1 times [2021-11-21 01:49:01,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:49:01,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012168891] [2021-11-21 01:49:01,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:01,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:49:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:01,794 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:01,795 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:49:01,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012168891] [2021-11-21 01:49:01,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012168891] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:49:01,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990159558] [2021-11-21 01:49:01,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:01,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:49:01,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:49:01,797 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:49:01,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:49:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:01,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:49:01,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:49:01,936 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:01,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:49:02,025 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:02,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990159558] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:49:02,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [413904861] [2021-11-21 01:49:02,033 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-21 01:49:02,033 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:49:02,033 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:49:02,034 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:49:02,034 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:49:02,595 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:49:02,828 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:49:02,828 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:49:02,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2021-11-21 01:49:02,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029995475] [2021-11-21 01:49:02,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:49:02,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:49:02,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:49:02,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:49:02,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2021-11-21 01:49:02,830 INFO L87 Difference]: Start difference. First operand 143 states and 190 transitions. Second operand has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:03,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:49:03,328 INFO L93 Difference]: Finished difference Result 260 states and 360 transitions. [2021-11-21 01:49:03,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-21 01:49:03,328 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-21 01:49:03,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:49:03,330 INFO L225 Difference]: With dead ends: 260 [2021-11-21 01:49:03,330 INFO L226 Difference]: Without dead ends: 257 [2021-11-21 01:49:03,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=383, Invalid=1339, Unknown=0, NotChecked=0, Total=1722 [2021-11-21 01:49:03,332 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 248 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:49:03,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 21 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:49:03,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-11-21 01:49:03,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 166. [2021-11-21 01:49:03,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 162 states have (on average 1.2901234567901234) internal successors, (209), 165 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:03,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 209 transitions. [2021-11-21 01:49:03,352 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 209 transitions. Word has length 14 [2021-11-21 01:49:03,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:49:03,352 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 209 transitions. [2021-11-21 01:49:03,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:03,352 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 209 transitions. [2021-11-21 01:49:03,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-21 01:49:03,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:49:03,354 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-21 01:49:03,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:49:03,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-21 01:49:03,578 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:49:03,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:49:03,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1476454657, now seen corresponding path program 1 times [2021-11-21 01:49:03,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:49:03,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613254785] [2021-11-21 01:49:03,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:03,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:49:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:03,616 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:03,616 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:49:03,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613254785] [2021-11-21 01:49:03,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613254785] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:49:03,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361238114] [2021-11-21 01:49:03,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:03,617 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:49:03,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:49:03,626 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:49:03,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 01:49:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:03,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:49:03,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:49:03,706 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:03,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:49:03,757 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:03,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361238114] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:49:03,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1256988992] [2021-11-21 01:49:03,760 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-21 01:49:03,760 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:49:03,760 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:49:03,761 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:49:03,761 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:49:04,115 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:49:04,335 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:49:04,336 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:49:04,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-21 01:49:04,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240288954] [2021-11-21 01:49:04,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:49:04,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 01:49:04,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:49:04,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 01:49:04,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-21 01:49:04,337 INFO L87 Difference]: Start difference. First operand 166 states and 209 transitions. Second operand has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:04,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:49:04,429 INFO L93 Difference]: Finished difference Result 376 states and 497 transitions. [2021-11-21 01:49:04,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:49:04,430 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 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 17 [2021-11-21 01:49:04,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:49:04,432 INFO L225 Difference]: With dead ends: 376 [2021-11-21 01:49:04,433 INFO L226 Difference]: Without dead ends: 374 [2021-11-21 01:49:04,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-21 01:49:04,434 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 77 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:49:04,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 32 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:49:04,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-11-21 01:49:04,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 273. [2021-11-21 01:49:04,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 269 states have (on average 1.2602230483271375) internal successors, (339), 272 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:04,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 339 transitions. [2021-11-21 01:49:04,456 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 339 transitions. Word has length 17 [2021-11-21 01:49:04,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:49:04,456 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 339 transitions. [2021-11-21 01:49:04,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:04,457 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 339 transitions. [2021-11-21 01:49:04,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-21 01:49:04,459 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:49:04,459 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-21 01:49:04,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-21 01:49:04,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:49:04,678 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:49:04,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:49:04,679 INFO L85 PathProgramCache]: Analyzing trace with hash 218785273, now seen corresponding path program 1 times [2021-11-21 01:49:04,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:49:04,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548865771] [2021-11-21 01:49:04,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:04,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:49:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:04,736 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:49:04,737 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:49:04,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548865771] [2021-11-21 01:49:04,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548865771] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:49:04,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047510650] [2021-11-21 01:49:04,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:04,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:49:04,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:49:04,742 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:49:04,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 01:49:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:04,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:49:04,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:49:04,941 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:49:04,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:49:05,096 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:49:05,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047510650] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:49:05,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2104199447] [2021-11-21 01:49:05,098 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-21 01:49:05,098 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:49:05,099 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:49:05,099 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:49:05,099 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:49:06,817 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:49:07,118 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:49:07,119 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:49:07,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 18 [2021-11-21 01:49:07,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145593187] [2021-11-21 01:49:07,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:49:07,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-21 01:49:07,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:49:07,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-21 01:49:07,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=735, Unknown=0, NotChecked=0, Total=870 [2021-11-21 01:49:07,121 INFO L87 Difference]: Start difference. First operand 273 states and 339 transitions. Second operand has 19 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 19 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:07,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:49:07,879 INFO L93 Difference]: Finished difference Result 510 states and 646 transitions. [2021-11-21 01:49:07,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-21 01:49:07,880 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 19 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-21 01:49:07,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:49:07,883 INFO L225 Difference]: With dead ends: 510 [2021-11-21 01:49:07,883 INFO L226 Difference]: Without dead ends: 507 [2021-11-21 01:49:07,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=603, Invalid=2259, Unknown=0, NotChecked=0, Total=2862 [2021-11-21 01:49:07,886 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 91 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:49:07,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 0 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:49:07,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-11-21 01:49:07,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 304. [2021-11-21 01:49:07,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 300 states have (on average 1.24) internal successors, (372), 303 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:07,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 372 transitions. [2021-11-21 01:49:07,910 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 372 transitions. Word has length 23 [2021-11-21 01:49:07,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:49:07,911 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 372 transitions. [2021-11-21 01:49:07,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 19 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:07,911 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 372 transitions. [2021-11-21 01:49:07,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-21 01:49:07,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:49:07,914 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-21 01:49:07,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:49:08,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:49:08,130 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:49:08,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:49:08,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1998495684, now seen corresponding path program 2 times [2021-11-21 01:49:08,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:49:08,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328137157] [2021-11-21 01:49:08,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:08,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:49:08,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:08,206 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:08,206 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:49:08,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328137157] [2021-11-21 01:49:08,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328137157] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:49:08,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676272657] [2021-11-21 01:49:08,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:49:08,207 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:49:08,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:49:08,208 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:49:08,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 01:49:08,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-21 01:49:08,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:49:08,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-21 01:49:08,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:49:08,425 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:08,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:49:08,608 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:08,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676272657] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:49:08,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1122969966] [2021-11-21 01:49:08,610 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-21 01:49:08,611 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:49:08,611 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:49:08,611 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:49:08,612 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:49:10,256 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:49:10,529 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:49:10,529 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:49:10,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 21 [2021-11-21 01:49:10,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188955290] [2021-11-21 01:49:10,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:49:10,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-21 01:49:10,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:49:10,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-21 01:49:10,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=885, Unknown=0, NotChecked=0, Total=1056 [2021-11-21 01:49:10,531 INFO L87 Difference]: Start difference. First operand 304 states and 372 transitions. Second operand has 22 states, 21 states have (on average 3.9047619047619047) internal successors, (82), 22 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:11,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:49:11,921 INFO L93 Difference]: Finished difference Result 1477 states and 1782 transitions. [2021-11-21 01:49:11,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-11-21 01:49:11,922 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.9047619047619047) internal successors, (82), 22 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-21 01:49:11,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:49:11,931 INFO L225 Difference]: With dead ends: 1477 [2021-11-21 01:49:11,931 INFO L226 Difference]: Without dead ends: 1476 [2021-11-21 01:49:11,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3192 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1820, Invalid=6552, Unknown=0, NotChecked=0, Total=8372 [2021-11-21 01:49:11,936 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 468 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:49:11,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [468 Valid, 25 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 01:49:11,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2021-11-21 01:49:11,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 704. [2021-11-21 01:49:12,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 700 states have (on average 1.247142857142857) internal successors, (873), 703 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:12,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 873 transitions. [2021-11-21 01:49:12,004 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 873 transitions. Word has length 28 [2021-11-21 01:49:12,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:49:12,004 INFO L470 AbstractCegarLoop]: Abstraction has 704 states and 873 transitions. [2021-11-21 01:49:12,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.9047619047619047) internal successors, (82), 22 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:12,005 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 873 transitions. [2021-11-21 01:49:12,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-21 01:49:12,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:49:12,007 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1] [2021-11-21 01:49:12,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-21 01:49:12,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-21 01:49:12,234 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:49:12,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:49:12,235 INFO L85 PathProgramCache]: Analyzing trace with hash -92271481, now seen corresponding path program 2 times [2021-11-21 01:49:12,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:49:12,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489468647] [2021-11-21 01:49:12,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:12,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:49:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:12,358 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:12,358 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:49:12,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489468647] [2021-11-21 01:49:12,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489468647] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:49:12,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180466392] [2021-11-21 01:49:12,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:49:12,358 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:49:12,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:49:12,359 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:49:12,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-21 01:49:12,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-21 01:49:12,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:49:12,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-21 01:49:12,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:49:12,707 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:12,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:49:23,296 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:23,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180466392] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:49:23,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1929403407] [2021-11-21 01:49:23,299 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-21 01:49:23,299 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:49:23,299 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:49:23,299 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:49:23,300 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:49:23,906 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:49:24,312 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:49:24,312 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:49:24,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2021-11-21 01:49:24,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798886796] [2021-11-21 01:49:24,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:49:24,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-21 01:49:24,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:49:24,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-21 01:49:24,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=1279, Unknown=5, NotChecked=0, Total=1560 [2021-11-21 01:49:24,314 INFO L87 Difference]: Start difference. First operand 704 states and 873 transitions. Second operand has 32 states, 31 states have (on average 2.935483870967742) internal successors, (91), 32 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:26,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:49:26,275 INFO L93 Difference]: Finished difference Result 1332 states and 1598 transitions. [2021-11-21 01:49:26,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-21 01:49:26,276 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.935483870967742) internal successors, (91), 32 states have internal predecessors, (91), 0 states have call successors, (0), 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 [2021-11-21 01:49:26,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:49:26,283 INFO L225 Difference]: With dead ends: 1332 [2021-11-21 01:49:26,283 INFO L226 Difference]: Without dead ends: 1331 [2021-11-21 01:49:26,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1819 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=1329, Invalid=3922, Unknown=5, NotChecked=0, Total=5256 [2021-11-21 01:49:26,287 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 650 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:49:26,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [650 Valid, 86 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 691 Invalid, 0 Unknown, 91 Unchecked, 0.7s Time] [2021-11-21 01:49:26,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2021-11-21 01:49:26,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 813. [2021-11-21 01:49:26,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 809 states have (on average 1.238566131025958) internal successors, (1002), 812 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:26,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1002 transitions. [2021-11-21 01:49:26,347 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1002 transitions. Word has length 31 [2021-11-21 01:49:26,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:49:26,347 INFO L470 AbstractCegarLoop]: Abstraction has 813 states and 1002 transitions. [2021-11-21 01:49:26,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.935483870967742) internal successors, (91), 32 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:26,348 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1002 transitions. [2021-11-21 01:49:26,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-21 01:49:26,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:49:26,353 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1] [2021-11-21 01:49:26,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-21 01:49:26,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-21 01:49:26,578 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:49:26,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:49:26,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1797904045, now seen corresponding path program 1 times [2021-11-21 01:49:26,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:49:26,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096022505] [2021-11-21 01:49:26,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:26,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:49:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:26,622 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 38 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-21 01:49:26,623 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:49:26,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096022505] [2021-11-21 01:49:26,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096022505] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:49:26,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063765287] [2021-11-21 01:49:26,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:26,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:49:26,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:49:26,624 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:49:26,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-21 01:49:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:26,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-21 01:49:26,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:49:26,864 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:26,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:49:27,187 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:27,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063765287] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:49:27,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [774605731] [2021-11-21 01:49:27,189 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-21 01:49:27,189 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:49:27,189 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:49:27,190 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:49:27,190 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:49:27,687 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:49:27,917 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:49:27,917 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:49:27,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 24 [2021-11-21 01:49:27,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993492083] [2021-11-21 01:49:27,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:49:27,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-21 01:49:27,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:49:27,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-21 01:49:27,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=849, Unknown=0, NotChecked=0, Total=1056 [2021-11-21 01:49:27,920 INFO L87 Difference]: Start difference. First operand 813 states and 1002 transitions. Second operand has 25 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 25 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:29,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:49:29,504 INFO L93 Difference]: Finished difference Result 2254 states and 2759 transitions. [2021-11-21 01:49:29,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-21 01:49:29,504 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 25 states have internal predecessors, (86), 0 states have call successors, (0), 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 35 [2021-11-21 01:49:29,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:49:29,516 INFO L225 Difference]: With dead ends: 2254 [2021-11-21 01:49:29,516 INFO L226 Difference]: Without dead ends: 2051 [2021-11-21 01:49:29,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1245 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1047, Invalid=3923, Unknown=0, NotChecked=0, Total=4970 [2021-11-21 01:49:29,526 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 303 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:49:29,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 88 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 01:49:29,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2051 states. [2021-11-21 01:49:29,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2051 to 391. [2021-11-21 01:49:29,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 388 states have (on average 1.211340206185567) internal successors, (470), 390 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:29,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 470 transitions. [2021-11-21 01:49:29,587 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 470 transitions. Word has length 35 [2021-11-21 01:49:29,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:49:29,588 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 470 transitions. [2021-11-21 01:49:29,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 25 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:29,588 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 470 transitions. [2021-11-21 01:49:29,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-21 01:49:29,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:49:29,590 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2021-11-21 01:49:29,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-21 01:49:29,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-21 01:49:29,805 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:49:29,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:49:29,805 INFO L85 PathProgramCache]: Analyzing trace with hash 492246977, now seen corresponding path program 2 times [2021-11-21 01:49:29,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:49:29,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59237499] [2021-11-21 01:49:29,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:29,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:49:29,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:29,889 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:29,889 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:49:29,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59237499] [2021-11-21 01:49:29,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59237499] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:49:29,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58845122] [2021-11-21 01:49:29,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:49:29,891 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:49:29,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:49:29,894 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:49:29,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-21 01:49:29,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-11-21 01:49:29,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:49:29,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-21 01:49:29,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:49:30,014 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:30,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:49:30,158 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:30,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58845122] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:49:30,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1809139096] [2021-11-21 01:49:30,160 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-21 01:49:30,160 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:49:30,160 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:49:30,160 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:49:30,160 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:49:30,543 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:49:30,748 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:49:30,748 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:49:30,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2021-11-21 01:49:30,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937214688] [2021-11-21 01:49:30,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:49:30,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-21 01:49:30,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:49:30,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-21 01:49:30,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=379, Unknown=0, NotChecked=0, Total=552 [2021-11-21 01:49:30,750 INFO L87 Difference]: Start difference. First operand 391 states and 470 transitions. Second operand has 16 states, 15 states have (on average 4.866666666666666) internal successors, (73), 16 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:31,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:49:31,046 INFO L93 Difference]: Finished difference Result 1591 states and 2029 transitions. [2021-11-21 01:49:31,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-21 01:49:31,047 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.866666666666666) internal successors, (73), 16 states have internal predecessors, (73), 0 states have call successors, (0), 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 37 [2021-11-21 01:49:31,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:49:31,055 INFO L225 Difference]: With dead ends: 1591 [2021-11-21 01:49:31,055 INFO L226 Difference]: Without dead ends: 1589 [2021-11-21 01:49:31,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=173, Invalid=379, Unknown=0, NotChecked=0, Total=552 [2021-11-21 01:49:31,057 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 242 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:49:31,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 64 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:49:31,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2021-11-21 01:49:31,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1122. [2021-11-21 01:49:31,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1119 states have (on average 1.1840929401251117) internal successors, (1325), 1121 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:31,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1325 transitions. [2021-11-21 01:49:31,173 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1325 transitions. Word has length 37 [2021-11-21 01:49:31,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:49:31,174 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 1325 transitions. [2021-11-21 01:49:31,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.866666666666666) internal successors, (73), 16 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:31,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1325 transitions. [2021-11-21 01:49:31,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-21 01:49:31,176 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:49:31,176 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2021-11-21 01:49:31,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-21 01:49:31,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-21 01:49:31,396 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:49:31,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:49:31,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1120594886, now seen corresponding path program 3 times [2021-11-21 01:49:31,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:49:31,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366117059] [2021-11-21 01:49:31,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:31,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:49:31,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:31,563 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:31,563 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:49:31,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366117059] [2021-11-21 01:49:31,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366117059] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:49:31,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424724846] [2021-11-21 01:49:31,564 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 01:49:31,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:49:31,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:49:31,564 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:49:31,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-21 01:49:31,599 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 01:49:31,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:49:31,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-21 01:49:31,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:49:32,034 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:32,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:49:32,559 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:32,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424724846] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:49:32,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1947516384] [2021-11-21 01:49:32,561 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-21 01:49:32,561 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:49:32,562 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:49:32,562 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:49:32,562 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:49:34,106 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:49:34,502 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:49:34,503 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:49:34,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 46 [2021-11-21 01:49:34,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618441943] [2021-11-21 01:49:34,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:49:34,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-11-21 01:49:34,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:49:34,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-11-21 01:49:34,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=2810, Unknown=0, NotChecked=0, Total=3306 [2021-11-21 01:49:34,505 INFO L87 Difference]: Start difference. First operand 1122 states and 1325 transitions. Second operand has 47 states, 46 states have (on average 2.8260869565217392) internal successors, (130), 47 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:55,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:49:55,714 INFO L93 Difference]: Finished difference Result 15895 states and 18738 transitions. [2021-11-21 01:49:55,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 464 states. [2021-11-21 01:49:55,715 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 2.8260869565217392) internal successors, (130), 47 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-21 01:49:55,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:49:55,788 INFO L225 Difference]: With dead ends: 15895 [2021-11-21 01:49:55,788 INFO L226 Difference]: Without dead ends: 15894 [2021-11-21 01:49:55,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 511 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134655 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=59684, Invalid=202972, Unknown=0, NotChecked=0, Total=262656 [2021-11-21 01:49:55,813 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 1820 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 4546 mSolverCounterSat, 898 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1820 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 5444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 898 IncrementalHoareTripleChecker+Valid, 4546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:49:55,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1820 Valid, 15 Invalid, 5444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [898 Valid, 4546 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-21 01:49:55,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15894 states. [2021-11-21 01:49:56,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15894 to 6160. [2021-11-21 01:49:56,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6160 states, 6157 states have (on average 1.1965242813058308) internal successors, (7367), 6159 states have internal predecessors, (7367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:56,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6160 states to 6160 states and 7367 transitions. [2021-11-21 01:49:56,708 INFO L78 Accepts]: Start accepts. Automaton has 6160 states and 7367 transitions. Word has length 44 [2021-11-21 01:49:56,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:49:56,708 INFO L470 AbstractCegarLoop]: Abstraction has 6160 states and 7367 transitions. [2021-11-21 01:49:56,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 2.8260869565217392) internal successors, (130), 47 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:56,709 INFO L276 IsEmpty]: Start isEmpty. Operand 6160 states and 7367 transitions. [2021-11-21 01:49:56,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-21 01:49:56,710 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:49:56,711 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:49:56,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-21 01:49:56,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-21 01:49:56,926 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:49:56,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:49:56,927 INFO L85 PathProgramCache]: Analyzing trace with hash -949580120, now seen corresponding path program 4 times [2021-11-21 01:49:56,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:49:56,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117523338] [2021-11-21 01:49:56,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:56,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:49:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:57,149 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:57,149 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:49:57,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117523338] [2021-11-21 01:49:57,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117523338] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:49:57,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975713164] [2021-11-21 01:49:57,150 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-21 01:49:57,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:49:57,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:49:57,152 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:49:57,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_022fea2d-9383-484d-9bd6-74a8b5a91f1b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-21 01:49:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:57,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-21 01:49:57,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:49:57,889 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:57,889 INFO L328 TraceCheckSpWp]: Computing backward predicates...