./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-random2d.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_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/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_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-random2d.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/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_57186e84-a55c-4900-9fbb-4045c20b8240/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 ef201cd54bcdc81a1760f6e60d88bd9cc04c6c00c0d7306b10fb5fb0b61b4e06 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:52:29,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:52:29,729 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:52:29,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:52:29,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:52:29,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:52:29,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:52:29,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:52:29,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:52:29,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:52:29,772 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:52:29,773 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:52:29,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:52:29,775 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:52:29,777 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:52:29,778 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:52:29,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:52:29,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:52:29,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:52:29,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:52:29,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:52:29,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:52:29,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:52:29,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:52:29,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:52:29,796 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:52:29,797 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:52:29,798 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:52:29,798 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:52:29,800 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:52:29,800 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:52:29,801 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:52:29,802 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:52:29,803 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:52:29,804 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:52:29,805 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:52:29,806 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:52:29,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:52:29,807 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:52:29,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:52:29,809 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:52:29,812 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-21 00:52:29,854 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:52:29,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:52:29,856 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:52:29,856 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:52:29,857 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:52:29,863 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:52:29,864 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:52:29,864 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:52:29,864 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:52:29,864 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:52:29,865 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:52:29,866 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:52:29,866 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:52:29,866 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:52:29,866 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:52:29,867 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:52:29,867 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:52:29,867 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:52:29,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:52:29,868 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 00:52:29,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:52:29,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:52:29,869 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:52:29,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:52:29,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:52:29,870 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-21 00:52:29,871 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:52:29,872 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:52:29,872 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:52:29,872 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:52:29,872 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:52:29,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:52:29,873 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:52:29,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:52:29,873 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:52:29,874 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:52:29,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:52:29,874 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:52:29,874 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:52:29,875 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:52:29,875 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_57186e84-a55c-4900-9fbb-4045c20b8240/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef201cd54bcdc81a1760f6e60d88bd9cc04c6c00c0d7306b10fb5fb0b61b4e06 [2021-11-21 00:52:30,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:52:30,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:52:30,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:52:30,194 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:52:30,195 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:52:30,196 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-random2d.c [2021-11-21 00:52:30,271 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/data/f0cbc234e/9575e168bf5d4a80a42904d8cf3e0acd/FLAGa1291ce6a [2021-11-21 00:52:30,726 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:52:30,727 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-random2d.c [2021-11-21 00:52:30,753 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/data/f0cbc234e/9575e168bf5d4a80a42904d8cf3e0acd/FLAGa1291ce6a [2021-11-21 00:52:31,114 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/data/f0cbc234e/9575e168bf5d4a80a42904d8cf3e0acd [2021-11-21 00:52:31,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:52:31,121 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:52:31,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:52:31,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:52:31,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:52:31,128 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:52:31" (1/1) ... [2021-11-21 00:52:31,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eb88db1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:52:31, skipping insertion in model container [2021-11-21 00:52:31,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:52:31" (1/1) ... [2021-11-21 00:52:31,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:52:31,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:52:31,338 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:52:31,346 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:52:31,378 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:52:31,389 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:52:31,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:52:31 WrapperNode [2021-11-21 00:52:31,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:52:31,391 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:52:31,391 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:52:31,391 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:52:31,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:52:31" (1/1) ... [2021-11-21 00:52:31,403 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:52:31" (1/1) ... [2021-11-21 00:52:31,421 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 40 [2021-11-21 00:52:31,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:52:31,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:52:31,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:52:31,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:52:31,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:52:31" (1/1) ... [2021-11-21 00:52:31,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:52:31" (1/1) ... [2021-11-21 00:52:31,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:52:31" (1/1) ... [2021-11-21 00:52:31,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:52:31" (1/1) ... [2021-11-21 00:52:31,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:52:31" (1/1) ... [2021-11-21 00:52:31,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:52:31" (1/1) ... [2021-11-21 00:52:31,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:52:31" (1/1) ... [2021-11-21 00:52:31,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:52:31,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:52:31,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:52:31,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:52:31,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:52:31" (1/1) ... [2021-11-21 00:52:31,467 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:52:31,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:52:31,492 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:52:31,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:52:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:52:31,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:52:31,611 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:52:31,613 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:52:31,770 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:52:31,792 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:52:31,792 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 00:52:31,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:52:31 BoogieIcfgContainer [2021-11-21 00:52:31,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:52:31,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:52:31,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:52:31,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:52:31,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:52:31" (1/3) ... [2021-11-21 00:52:31,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9c341ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:52:31, skipping insertion in model container [2021-11-21 00:52:31,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:52:31" (2/3) ... [2021-11-21 00:52:31,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9c341ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:52:31, skipping insertion in model container [2021-11-21 00:52:31,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:52:31" (3/3) ... [2021-11-21 00:52:31,809 INFO L111 eAbstractionObserver]: Analyzing ICFG ChawdharyCookGulwaniSagivYang-ESOP2008-random2d.c [2021-11-21 00:52:31,815 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:52:31,815 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-21 00:52:31,875 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:52:31,886 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 00:52:31,887 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-21 00:52:31,905 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 27 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 00:52:31,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-21 00:52:31,918 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:52:31,919 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-21 00:52:31,919 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-21 00:52:31,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:52:31,928 INFO L85 PathProgramCache]: Analyzing trace with hash 94531, now seen corresponding path program 1 times [2021-11-21 00:52:31,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:52:31,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110016500] [2021-11-21 00:52:31,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:52:31,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:52:32,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:52:32,107 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 00:52:32,107 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:52:32,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110016500] [2021-11-21 00:52:32,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110016500] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:52:32,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:52:32,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-21 00:52:32,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454551208] [2021-11-21 00:52:32,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:52:32,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:52:32,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:52:32,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:52:32,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:52:32,180 INFO L87 Difference]: Start difference. First operand has 28 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 27 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) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:52:32,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:52:32,215 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2021-11-21 00:52:32,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:52:32,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-21 00:52:32,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:52:32,226 INFO L225 Difference]: With dead ends: 33 [2021-11-21 00:52:32,226 INFO L226 Difference]: Without dead ends: 30 [2021-11-21 00:52:32,229 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 00:52:32,233 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 3 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:52:32,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 53 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:52:32,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-21 00:52:32,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2021-11-21 00:52:32,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.7894736842105263) 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 00:52:32,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2021-11-21 00:52:32,278 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 3 [2021-11-21 00:52:32,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:52:32,279 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2021-11-21 00:52:32,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:52:32,280 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2021-11-21 00:52:32,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-21 00:52:32,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:52:32,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-21 00:52:32,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:52:32,282 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-21 00:52:32,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:52:32,285 INFO L85 PathProgramCache]: Analyzing trace with hash 2930506, now seen corresponding path program 1 times [2021-11-21 00:52:32,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:52:32,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566690167] [2021-11-21 00:52:32,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:52:32,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:52:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:52:32,332 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 00:52:32,332 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:52:32,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566690167] [2021-11-21 00:52:32,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566690167] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:52:32,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:52:32,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-21 00:52:32,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159469044] [2021-11-21 00:52:32,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:52:32,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:52:32,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:52:32,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:52:32,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:52:32,340 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. 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 00:52:32,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:52:32,375 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2021-11-21 00:52:32,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:52:32,376 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 00:52:32,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:52:32,377 INFO L225 Difference]: With dead ends: 29 [2021-11-21 00:52:32,377 INFO L226 Difference]: Without dead ends: 28 [2021-11-21 00:52:32,378 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 00:52:32,381 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:52:32,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 26 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:52:32,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-21 00:52:32,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-11-21 00:52:32,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.736842105263158) internal successors, (33), 27 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 00:52:32,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2021-11-21 00:52:32,392 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 4 [2021-11-21 00:52:32,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:52:32,393 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2021-11-21 00:52:32,393 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 00:52:32,394 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2021-11-21 00:52:32,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-21 00:52:32,394 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:52:32,394 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:52:32,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:52:32,395 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-21 00:52:32,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:52:32,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1403406088, now seen corresponding path program 1 times [2021-11-21 00:52:32,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:52:32,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484192858] [2021-11-21 00:52:32,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:52:32,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:52:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:52:32,425 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 00:52:32,425 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:52:32,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484192858] [2021-11-21 00:52:32,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484192858] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:52:32,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:52:32,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-21 00:52:32,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114236169] [2021-11-21 00:52:32,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:52:32,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:52:32,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:52:32,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:52:32,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:52:32,431 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:52:32,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:52:32,476 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2021-11-21 00:52:32,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:52:32,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-21 00:52:32,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:52:32,477 INFO L225 Difference]: With dead ends: 51 [2021-11-21 00:52:32,478 INFO L226 Difference]: Without dead ends: 49 [2021-11-21 00:52:32,478 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 00:52:32,480 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 21 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:52:32,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 46 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:52:32,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-11-21 00:52:32,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2021-11-21 00:52:32,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 34 states have (on average 1.7352941176470589) internal successors, (59), 42 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 00:52:32,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 59 transitions. [2021-11-21 00:52:32,488 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 59 transitions. Word has length 7 [2021-11-21 00:52:32,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:52:32,489 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 59 transitions. [2021-11-21 00:52:32,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:52:32,489 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 59 transitions. [2021-11-21 00:52:32,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-21 00:52:32,490 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:52:32,490 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-11-21 00:52:32,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:52:32,490 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-21 00:52:32,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:52:32,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1403443247, now seen corresponding path program 1 times [2021-11-21 00:52:32,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:52:32,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322014132] [2021-11-21 00:52:32,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:52:32,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:52:32,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:52:32,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:52:32,537 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:52:32,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322014132] [2021-11-21 00:52:32,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322014132] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:52:32,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490211977] [2021-11-21 00:52:32,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:52:32,538 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:52:32,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:52:32,555 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:52:32,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:52:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:52:32,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:52:32,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:52:32,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:52:32,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:52:32,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:52:32,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490211977] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:52:32,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [106976476] [2021-11-21 00:52:32,730 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-21 00:52:32,730 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:52:32,734 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:52:32,740 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:52:32,740 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:52:33,321 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:52:33,427 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:52:33,427 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:52:33,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2021-11-21 00:52:33,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357210571] [2021-11-21 00:52:33,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:52:33,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:52:33,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:52:33,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:52:33,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-21 00:52:33,429 INFO L87 Difference]: Start difference. First operand 43 states and 59 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:52:33,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:52:33,494 INFO L93 Difference]: Finished difference Result 146 states and 202 transitions. [2021-11-21 00:52:33,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:52:33,497 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-21 00:52:33,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:52:33,500 INFO L225 Difference]: With dead ends: 146 [2021-11-21 00:52:33,500 INFO L226 Difference]: Without dead ends: 145 [2021-11-21 00:52:33,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-21 00:52:33,502 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 152 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:52:33,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 131 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:52:33,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-21 00:52:33,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 123. [2021-11-21 00:52:33,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 114 states have (on average 1.719298245614035) internal successors, (196), 122 states have internal predecessors, (196), 0 states have call successors, (0), 0 states 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 00:52:33,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 196 transitions. [2021-11-21 00:52:33,536 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 196 transitions. Word has length 7 [2021-11-21 00:52:33,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:52:33,537 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 196 transitions. [2021-11-21 00:52:33,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:52:33,537 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 196 transitions. [2021-11-21 00:52:33,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 00:52:33,538 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:52:33,538 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:52:33,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:52:33,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:52:33,751 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-21 00:52:33,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:52:33,751 INFO L85 PathProgramCache]: Analyzing trace with hash 555915823, now seen corresponding path program 1 times [2021-11-21 00:52:33,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:52:33,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789369730] [2021-11-21 00:52:33,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:52:33,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:52:33,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:52:33,783 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 00:52:33,784 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:52:33,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789369730] [2021-11-21 00:52:33,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789369730] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:52:33,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:52:33,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-21 00:52:33,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420408911] [2021-11-21 00:52:33,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:52:33,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:52:33,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:52:33,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:52:33,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:52:33,791 INFO L87 Difference]: Start difference. First operand 123 states and 196 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 00:52:33,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:52:33,832 INFO L93 Difference]: Finished difference Result 212 states and 337 transitions. [2021-11-21 00:52:33,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:52:33,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 00:52:33,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:52:33,836 INFO L225 Difference]: With dead ends: 212 [2021-11-21 00:52:33,843 INFO L226 Difference]: Without dead ends: 210 [2021-11-21 00:52:33,844 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 00:52:33,845 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 20 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:52:33,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 46 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:52:33,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-21 00:52:33,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 205. [2021-11-21 00:52:33,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 196 states have (on average 1.663265306122449) internal successors, (326), 204 states have internal predecessors, (326), 0 states have call successors, (0), 0 states 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 00:52:33,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 326 transitions. [2021-11-21 00:52:33,870 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 326 transitions. Word has length 8 [2021-11-21 00:52:33,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:52:33,871 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 326 transitions. [2021-11-21 00:52:33,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 00:52:33,871 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 326 transitions. [2021-11-21 00:52:33,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 00:52:33,872 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:52:33,872 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:52:33,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 00:52:33,872 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-21 00:52:33,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:52:33,873 INFO L85 PathProgramCache]: Analyzing trace with hash 53713073, now seen corresponding path program 1 times [2021-11-21 00:52:33,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:52:33,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937642862] [2021-11-21 00:52:33,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:52:33,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:52:33,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:52:33,913 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 00:52:33,914 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:52:33,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937642862] [2021-11-21 00:52:33,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937642862] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:52:33,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:52:33,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-21 00:52:33,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717473] [2021-11-21 00:52:33,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:52:33,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:52:33,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:52:33,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:52:33,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:52:33,917 INFO L87 Difference]: Start difference. First operand 205 states and 326 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 00:52:33,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:52:33,958 INFO L93 Difference]: Finished difference Result 345 states and 546 transitions. [2021-11-21 00:52:33,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:52:33,959 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 00:52:33,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:52:33,964 INFO L225 Difference]: With dead ends: 345 [2021-11-21 00:52:33,964 INFO L226 Difference]: Without dead ends: 343 [2021-11-21 00:52:33,965 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 00:52:33,969 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 19 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:52:33,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 46 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:52:33,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-11-21 00:52:34,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 330. [2021-11-21 00:52:34,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 321 states have (on average 1.5763239875389408) internal successors, (506), 329 states have internal predecessors, (506), 0 states have call successors, (0), 0 states 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 00:52:34,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 506 transitions. [2021-11-21 00:52:34,012 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 506 transitions. Word has length 9 [2021-11-21 00:52:34,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:52:34,012 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 506 transitions. [2021-11-21 00:52:34,013 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 00:52:34,013 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 506 transitions. [2021-11-21 00:52:34,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-21 00:52:34,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:52:34,013 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:52:34,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 00:52:34,013 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-21 00:52:34,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:52:34,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1665105336, now seen corresponding path program 1 times [2021-11-21 00:52:34,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:52:34,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673864907] [2021-11-21 00:52:34,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:52:34,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:52:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:52:34,035 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 00:52:34,035 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:52:34,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673864907] [2021-11-21 00:52:34,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673864907] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:52:34,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:52:34,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-21 00:52:34,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507003180] [2021-11-21 00:52:34,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:52:34,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:52:34,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:52:34,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:52:34,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:52:34,038 INFO L87 Difference]: Start difference. First operand 330 states and 506 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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 00:52:34,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:52:34,064 INFO L93 Difference]: Finished difference Result 549 states and 840 transitions. [2021-11-21 00:52:34,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:52:34,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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 00:52:34,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:52:34,068 INFO L225 Difference]: With dead ends: 549 [2021-11-21 00:52:34,068 INFO L226 Difference]: Without dead ends: 547 [2021-11-21 00:52:34,069 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 00:52:34,069 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 18 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:52:34,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 46 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:52:34,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-11-21 00:52:34,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 542. [2021-11-21 00:52:34,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 533 states have (on average 1.5159474671669793) internal successors, (808), 541 states have internal predecessors, (808), 0 states have call successors, (0), 0 states 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 00:52:34,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 808 transitions. [2021-11-21 00:52:34,127 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 808 transitions. Word has length 10 [2021-11-21 00:52:34,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:52:34,127 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 808 transitions. [2021-11-21 00:52:34,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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 00:52:34,128 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 808 transitions. [2021-11-21 00:52:34,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-21 00:52:34,129 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:52:34,129 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-11-21 00:52:34,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 00:52:34,130 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-21 00:52:34,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:52:34,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1107964330, now seen corresponding path program 1 times [2021-11-21 00:52:34,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:52:34,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132484098] [2021-11-21 00:52:34,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:52:34,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:52:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:52:34,175 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 00:52:34,176 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:52:34,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132484098] [2021-11-21 00:52:34,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132484098] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:52:34,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687061785] [2021-11-21 00:52:34,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:52:34,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:52:34,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:52:34,183 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:52:34,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 00:52:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:52:34,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:52:34,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:52:34,318 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 00:52:34,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:52:34,371 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 00:52:34,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687061785] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:52:34,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [655256120] [2021-11-21 00:52:34,375 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-21 00:52:34,375 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:52:34,376 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:52:34,376 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:52:34,376 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:52:35,148 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:52:35,444 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:52:35,444 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:52:35,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2021-11-21 00:52:35,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976509994] [2021-11-21 00:52:35,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:52:35,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:52:35,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:52:35,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:52:35,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-21 00:52:35,446 INFO L87 Difference]: Start difference. First operand 542 states and 808 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:52:35,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:52:35,526 INFO L93 Difference]: Finished difference Result 1046 states and 1607 transitions. [2021-11-21 00:52:35,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:52:35,527 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-21 00:52:35,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:52:35,534 INFO L225 Difference]: With dead ends: 1046 [2021-11-21 00:52:35,534 INFO L226 Difference]: Without dead ends: 1044 [2021-11-21 00:52:35,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-21 00:52:35,536 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 122 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:52:35,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 112 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:52:35,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2021-11-21 00:52:35,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 903. [2021-11-21 00:52:35,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 894 states have (on average 1.5279642058165548) internal successors, (1366), 902 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states 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 00:52:35,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1366 transitions. [2021-11-21 00:52:35,572 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1366 transitions. Word has length 14 [2021-11-21 00:52:35,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:52:35,573 INFO L470 AbstractCegarLoop]: Abstraction has 903 states and 1366 transitions. [2021-11-21 00:52:35,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:52:35,577 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1366 transitions. [2021-11-21 00:52:35,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-21 00:52:35,581 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:52:35,581 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:52:35,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 00:52:35,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-21 00:52:35,795 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-21 00:52:35,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:52:35,795 INFO L85 PathProgramCache]: Analyzing trace with hash 953294341, now seen corresponding path program 1 times [2021-11-21 00:52:35,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:52:35,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305702135] [2021-11-21 00:52:35,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:52:35,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:52:35,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:52:35,834 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 00:52:35,834 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:52:35,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305702135] [2021-11-21 00:52:35,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305702135] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:52:35,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309903835] [2021-11-21 00:52:35,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:52:35,835 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:52:35,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:52:35,851 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:52:35,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 00:52:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:52:35,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:52:35,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:52:35,917 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 00:52:35,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:52:35,959 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 00:52:35,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309903835] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:52:35,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [190705324] [2021-11-21 00:52:35,962 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-21 00:52:35,962 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:52:35,962 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:52:35,963 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:52:35,963 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:52:36,577 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:52:36,779 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:52:36,779 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:52:36,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2021-11-21 00:52:36,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21131018] [2021-11-21 00:52:36,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:52:36,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:52:36,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:52:36,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:52:36,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-11-21 00:52:36,780 INFO L87 Difference]: Start difference. First operand 903 states and 1366 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states 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 00:52:36,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:52:36,831 INFO L93 Difference]: Finished difference Result 1364 states and 2105 transitions. [2021-11-21 00:52:36,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:52:36,831 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 16 [2021-11-21 00:52:36,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:52:36,839 INFO L225 Difference]: With dead ends: 1364 [2021-11-21 00:52:36,839 INFO L226 Difference]: Without dead ends: 1362 [2021-11-21 00:52:36,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-11-21 00:52:36,841 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 84 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:52:36,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 66 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:52:36,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2021-11-21 00:52:36,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1060. [2021-11-21 00:52:36,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 1052 states have (on average 1.518060836501901) internal successors, (1597), 1059 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states 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 00:52:36,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1597 transitions. [2021-11-21 00:52:36,877 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1597 transitions. Word has length 16 [2021-11-21 00:52:36,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:52:36,878 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 1597 transitions. [2021-11-21 00:52:36,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states 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 00:52:36,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1597 transitions. [2021-11-21 00:52:36,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-21 00:52:36,879 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:52:36,879 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-11-21 00:52:36,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 00:52:37,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:52:37,095 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-21 00:52:37,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:52:37,095 INFO L85 PathProgramCache]: Analyzing trace with hash -2065182968, now seen corresponding path program 1 times [2021-11-21 00:52:37,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:52:37,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397888289] [2021-11-21 00:52:37,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:52:37,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:52:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:52:37,124 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:52:37,125 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:52:37,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397888289] [2021-11-21 00:52:37,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397888289] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:52:37,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439866463] [2021-11-21 00:52:37,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:52:37,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:52:37,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:52:37,126 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:52:37,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 00:52:37,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:52:37,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:52:37,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:52:37,195 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:52:37,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:52:37,254 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:52:37,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439866463] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:52:37,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [366150536] [2021-11-21 00:52:37,257 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-21 00:52:37,257 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:52:37,257 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:52:37,258 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:52:37,258 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:52:37,900 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:52:38,186 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:52:38,187 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:52:38,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2021-11-21 00:52:38,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861348494] [2021-11-21 00:52:38,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:52:38,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:52:38,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:52:38,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:52:38,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-21 00:52:38,189 INFO L87 Difference]: Start difference. First operand 1060 states and 1597 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:52:38,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:52:38,274 INFO L93 Difference]: Finished difference Result 2461 states and 3871 transitions. [2021-11-21 00:52:38,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:52:38,275 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-21 00:52:38,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:52:38,289 INFO L225 Difference]: With dead ends: 2461 [2021-11-21 00:52:38,289 INFO L226 Difference]: Without dead ends: 2459 [2021-11-21 00:52:38,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-21 00:52:38,293 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 102 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:52:38,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 107 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:52:38,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2459 states. [2021-11-21 00:52:38,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2459 to 2129. [2021-11-21 00:52:38,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2129 states, 2121 states have (on average 1.5223950966525224) internal successors, (3229), 2128 states have internal predecessors, (3229), 0 states have call successors, (0), 0 states 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 00:52:38,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2129 states to 2129 states and 3229 transitions. [2021-11-21 00:52:38,363 INFO L78 Accepts]: Start accepts. Automaton has 2129 states and 3229 transitions. Word has length 18 [2021-11-21 00:52:38,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:52:38,363 INFO L470 AbstractCegarLoop]: Abstraction has 2129 states and 3229 transitions. [2021-11-21 00:52:38,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:52:38,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2129 states and 3229 transitions. [2021-11-21 00:52:38,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-21 00:52:38,365 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:52:38,365 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1] [2021-11-21 00:52:38,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-21 00:52:38,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:52:38,591 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-21 00:52:38,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:52:38,591 INFO L85 PathProgramCache]: Analyzing trace with hash -492631821, now seen corresponding path program 2 times [2021-11-21 00:52:38,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:52:38,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099999749] [2021-11-21 00:52:38,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:52:38,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:52:38,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:52:38,621 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-21 00:52:38,621 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:52:38,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099999749] [2021-11-21 00:52:38,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099999749] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:52:38,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969316046] [2021-11-21 00:52:38,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 00:52:38,622 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:52:38,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:52:38,623 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:52:38,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 00:52:38,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-21 00:52:38,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:52:38,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:52:38,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:52:38,695 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-21 00:52:38,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:52:38,739 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-21 00:52:38,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969316046] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:52:38,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1736567983] [2021-11-21 00:52:38,743 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-21 00:52:38,743 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:52:38,743 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:52:38,743 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:52:38,743 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:52:38,967 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:52:39,047 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:52:39,047 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:52:39,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2021-11-21 00:52:39,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545008777] [2021-11-21 00:52:39,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:52:39,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:52:39,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:52:39,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:52:39,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-21 00:52:39,049 INFO L87 Difference]: Start difference. First operand 2129 states and 3229 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:52:39,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:52:39,096 INFO L93 Difference]: Finished difference Result 2129 states and 3229 transitions. [2021-11-21 00:52:39,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:52:39,096 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-21 00:52:39,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:52:39,108 INFO L225 Difference]: With dead ends: 2129 [2021-11-21 00:52:39,108 INFO L226 Difference]: Without dead ends: 2128 [2021-11-21 00:52:39,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-21 00:52:39,111 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 51 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:52:39,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 50 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:52:39,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2128 states. [2021-11-21 00:52:39,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2128 to 1798. [2021-11-21 00:52:39,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 1791 states have (on average 1.4874371859296482) internal successors, (2664), 1797 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states 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 00:52:39,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2664 transitions. [2021-11-21 00:52:39,205 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2664 transitions. Word has length 19 [2021-11-21 00:52:39,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:52:39,205 INFO L470 AbstractCegarLoop]: Abstraction has 1798 states and 2664 transitions. [2021-11-21 00:52:39,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:52:39,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2664 transitions. [2021-11-21 00:52:39,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-21 00:52:39,206 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:52:39,206 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:52:39,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-21 00:52:39,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:52:39,431 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-21 00:52:39,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:52:39,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1112024197, now seen corresponding path program 1 times [2021-11-21 00:52:39,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:52:39,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490270820] [2021-11-21 00:52:39,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:52:39,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:52:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:52:39,482 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:52:39,483 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:52:39,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490270820] [2021-11-21 00:52:39,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490270820] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:52:39,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008798201] [2021-11-21 00:52:39,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:52:39,484 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:52:39,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:52:39,493 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:52:39,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-21 00:52:39,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:52:39,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:52:39,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:52:39,585 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:52:39,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:52:39,635 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:52:39,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008798201] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:52:39,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [89260547] [2021-11-21 00:52:39,638 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-11-21 00:52:39,639 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:52:39,639 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:52:39,639 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:52:39,639 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:52:40,394 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:52:40,683 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:52:40,683 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:52:40,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2021-11-21 00:52:40,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871903256] [2021-11-21 00:52:40,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:52:40,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:52:40,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:52:40,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:52:40,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-21 00:52:40,685 INFO L87 Difference]: Start difference. First operand 1798 states and 2664 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 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 00:52:40,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:52:40,754 INFO L93 Difference]: Finished difference Result 3110 states and 4688 transitions. [2021-11-21 00:52:40,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:52:40,754 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 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 20 [2021-11-21 00:52:40,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:52:40,773 INFO L225 Difference]: With dead ends: 3110 [2021-11-21 00:52:40,773 INFO L226 Difference]: Without dead ends: 3108 [2021-11-21 00:52:40,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-21 00:52:40,777 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 78 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:52:40,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 60 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:52:40,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3108 states. [2021-11-21 00:52:40,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3108 to 2295. [2021-11-21 00:52:40,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2295 states, 2289 states have (on average 1.4600262123197902) internal successors, (3342), 2294 states have internal predecessors, (3342), 0 states have call successors, (0), 0 states 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 00:52:40,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2295 states to 2295 states and 3342 transitions. [2021-11-21 00:52:40,854 INFO L78 Accepts]: Start accepts. Automaton has 2295 states and 3342 transitions. Word has length 20 [2021-11-21 00:52:40,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:52:40,856 INFO L470 AbstractCegarLoop]: Abstraction has 2295 states and 3342 transitions. [2021-11-21 00:52:40,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 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 00:52:40,856 INFO L276 IsEmpty]: Start isEmpty. Operand 2295 states and 3342 transitions. [2021-11-21 00:52:40,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-21 00:52:40,858 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:52:40,858 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1] [2021-11-21 00:52:40,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-21 00:52:41,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-21 00:52:41,071 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-21 00:52:41,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:52:41,071 INFO L85 PathProgramCache]: Analyzing trace with hash -923998945, now seen corresponding path program 1 times [2021-11-21 00:52:41,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:52:41,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826248687] [2021-11-21 00:52:41,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:52:41,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:52:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:52:41,132 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:52:41,132 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:52:41,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826248687] [2021-11-21 00:52:41,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826248687] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:52:41,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168885093] [2021-11-21 00:52:41,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:52:41,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:52:41,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:52:41,134 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:52:41,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-21 00:52:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:52:41,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 00:52:41,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:52:41,234 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:52:41,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:52:41,319 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:52:41,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168885093] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:52:41,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [731452306] [2021-11-21 00:52:41,324 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-21 00:52:41,324 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:52:41,324 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:52:41,325 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:52:41,325 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:52:41,898 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:52:42,081 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:52:42,081 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:52:42,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2021-11-21 00:52:42,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440419915] [2021-11-21 00:52:42,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:52:42,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 00:52:42,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:52:42,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 00:52:42,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-11-21 00:52:42,083 INFO L87 Difference]: Start difference. First operand 2295 states and 3342 transitions. Second operand has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:52:42,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:52:42,214 INFO L93 Difference]: Finished difference Result 6600 states and 9697 transitions. [2021-11-21 00:52:42,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:52:42,215 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-21 00:52:42,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:52:42,249 INFO L225 Difference]: With dead ends: 6600 [2021-11-21 00:52:42,249 INFO L226 Difference]: Without dead ends: 6599 [2021-11-21 00:52:42,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-11-21 00:52:42,256 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 156 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:52:42,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 141 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:52:42,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6599 states. [2021-11-21 00:52:42,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6599 to 5400. [2021-11-21 00:52:42,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5400 states, 5394 states have (on average 1.4556915090841676) internal successors, (7852), 5399 states have internal predecessors, (7852), 0 states have call successors, (0), 0 states 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 00:52:42,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5400 states to 5400 states and 7852 transitions. [2021-11-21 00:52:42,451 INFO L78 Accepts]: Start accepts. Automaton has 5400 states and 7852 transitions. Word has length 25 [2021-11-21 00:52:42,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:52:42,451 INFO L470 AbstractCegarLoop]: Abstraction has 5400 states and 7852 transitions. [2021-11-21 00:52:42,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:52:42,451 INFO L276 IsEmpty]: Start isEmpty. Operand 5400 states and 7852 transitions. [2021-11-21 00:52:42,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-21 00:52:42,453 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:52:42,453 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1] [2021-11-21 00:52:42,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-21 00:52:42,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-21 00:52:42,667 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-21 00:52:42,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:52:42,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1295272154, now seen corresponding path program 1 times [2021-11-21 00:52:42,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:52:42,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729390104] [2021-11-21 00:52:42,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:52:42,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:52:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:52:42,700 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:52:42,701 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:52:42,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729390104] [2021-11-21 00:52:42,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729390104] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:52:42,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569546644] [2021-11-21 00:52:42,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:52:42,702 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:52:42,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:52:42,703 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:52:42,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-21 00:52:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:52:42,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 00:52:42,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:52:42,796 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:52:42,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:52:42,871 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:52:42,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569546644] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:52:42,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1104271868] [2021-11-21 00:52:42,874 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-21 00:52:42,874 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:52:42,875 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:52:42,875 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:52:42,875 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:52:43,547 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:52:43,857 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:52:43,857 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:52:43,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2021-11-21 00:52:43,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463675038] [2021-11-21 00:52:43,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:52:43,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 00:52:43,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:52:43,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 00:52:43,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2021-11-21 00:52:43,859 INFO L87 Difference]: Start difference. First operand 5400 states and 7852 transitions. Second operand has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 00:52:44,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:52:44,171 INFO L93 Difference]: Finished difference Result 15528 states and 22801 transitions. [2021-11-21 00:52:44,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:52:44,172 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 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 00:52:44,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:52:44,252 INFO L225 Difference]: With dead ends: 15528 [2021-11-21 00:52:44,252 INFO L226 Difference]: Without dead ends: 15527 [2021-11-21 00:52:44,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 73 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2021-11-21 00:52:44,265 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 140 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:52:44,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 141 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:52:44,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15527 states. [2021-11-21 00:52:44,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15527 to 12717. [2021-11-21 00:52:44,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12717 states, 12711 states have (on average 1.4511840138462748) internal successors, (18446), 12716 states have internal predecessors, (18446), 0 states have call successors, (0), 0 states 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 00:52:44,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12717 states to 12717 states and 18446 transitions. [2021-11-21 00:52:44,740 INFO L78 Accepts]: Start accepts. Automaton has 12717 states and 18446 transitions. Word has length 31 [2021-11-21 00:52:44,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:52:44,741 INFO L470 AbstractCegarLoop]: Abstraction has 12717 states and 18446 transitions. [2021-11-21 00:52:44,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 00:52:44,741 INFO L276 IsEmpty]: Start isEmpty. Operand 12717 states and 18446 transitions. [2021-11-21 00:52:44,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-21 00:52:44,742 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:52:44,742 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 1, 1] [2021-11-21 00:52:44,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-21 00:52:44,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-21 00:52:44,959 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-21 00:52:44,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:52:44,959 INFO L85 PathProgramCache]: Analyzing trace with hash 188182408, now seen corresponding path program 2 times [2021-11-21 00:52:44,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:52:44,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118836455] [2021-11-21 00:52:44,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:52:44,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:52:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:52:45,027 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:52:45,028 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:52:45,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118836455] [2021-11-21 00:52:45,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118836455] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:52:45,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756535167] [2021-11-21 00:52:45,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 00:52:45,028 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:52:45,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:52:45,031 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:52:45,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-21 00:52:45,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-21 00:52:45,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:52:45,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 00:52:45,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:52:45,155 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:52:45,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:52:45,251 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:52:45,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756535167] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:52:45,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1862823311] [2021-11-21 00:52:45,255 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-21 00:52:45,256 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:52:45,256 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:52:45,256 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:52:45,256 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:52:45,877 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:52:46,114 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:52:46,114 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:52:46,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-21 00:52:46,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56610368] [2021-11-21 00:52:46,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:52:46,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:52:46,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:52:46,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:52:46,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:52:46,116 INFO L87 Difference]: Start difference. First operand 12717 states and 18446 transitions. Second operand has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 00:52:46,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:52:46,760 INFO L93 Difference]: Finished difference Result 43312 states and 64319 transitions. [2021-11-21 00:52:46,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-21 00:52:46,761 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 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 00:52:46,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:52:46,878 INFO L225 Difference]: With dead ends: 43312 [2021-11-21 00:52:46,878 INFO L226 Difference]: Without dead ends: 43310 [2021-11-21 00:52:46,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:52:46,912 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 325 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:52:46,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 222 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:52:46,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43310 states. [2021-11-21 00:52:47,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43310 to 27375. [2021-11-21 00:52:47,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27375 states, 27369 states have (on average 1.4275274946106908) internal successors, (39070), 27374 states have internal predecessors, (39070), 0 states have call successors, (0), 0 states 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 00:52:47,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27375 states to 27375 states and 39070 transitions. [2021-11-21 00:52:47,900 INFO L78 Accepts]: Start accepts. Automaton has 27375 states and 39070 transitions. Word has length 35 [2021-11-21 00:52:47,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:52:47,900 INFO L470 AbstractCegarLoop]: Abstraction has 27375 states and 39070 transitions. [2021-11-21 00:52:47,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 00:52:47,901 INFO L276 IsEmpty]: Start isEmpty. Operand 27375 states and 39070 transitions. [2021-11-21 00:52:47,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-21 00:52:47,904 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:52:47,905 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1] [2021-11-21 00:52:47,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-21 00:52:48,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-21 00:52:48,119 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-21 00:52:48,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:52:48,119 INFO L85 PathProgramCache]: Analyzing trace with hash -14465935, now seen corresponding path program 2 times [2021-11-21 00:52:48,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:52:48,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310398179] [2021-11-21 00:52:48,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:52:48,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:52:48,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:52:48,179 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:52:48,179 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:52:48,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310398179] [2021-11-21 00:52:48,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310398179] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:52:48,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037992481] [2021-11-21 00:52:48,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 00:52:48,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:52:48,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:52:48,181 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:52:48,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-21 00:52:48,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-21 00:52:48,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:52:48,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 00:52:48,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:52:48,434 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:52:48,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:52:48,556 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:52:48,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037992481] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:52:48,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [389019901] [2021-11-21 00:52:48,558 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-21 00:52:48,559 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:52:48,559 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:52:48,559 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:52:48,560 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:52:49,156 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:52:49,431 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:52:49,431 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:52:49,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-21 00:52:49,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576174182] [2021-11-21 00:52:49,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:52:49,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:52:49,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:52:49,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:52:49,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2021-11-21 00:52:49,434 INFO L87 Difference]: Start difference. First operand 27375 states and 39070 transitions. Second operand has 12 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 00:52:50,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:52:50,373 INFO L93 Difference]: Finished difference Result 93112 states and 136145 transitions. [2021-11-21 00:52:50,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-21 00:52:50,374 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 0 states have call successors, (0), 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 45 [2021-11-21 00:52:50,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:52:50,600 INFO L225 Difference]: With dead ends: 93112 [2021-11-21 00:52:50,600 INFO L226 Difference]: Without dead ends: 93110 [2021-11-21 00:52:50,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2021-11-21 00:52:50,620 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 319 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:52:50,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 222 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:52:50,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93110 states. [2021-11-21 00:52:52,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93110 to 58897. [2021-11-21 00:52:52,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58897 states, 58891 states have (on average 1.4050703842692431) internal successors, (82746), 58896 states have internal predecessors, (82746), 0 states have call successors, (0), 0 states 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 00:52:52,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58897 states to 58897 states and 82746 transitions. [2021-11-21 00:52:52,594 INFO L78 Accepts]: Start accepts. Automaton has 58897 states and 82746 transitions. Word has length 45 [2021-11-21 00:52:52,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:52:52,595 INFO L470 AbstractCegarLoop]: Abstraction has 58897 states and 82746 transitions. [2021-11-21 00:52:52,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 00:52:52,595 INFO L276 IsEmpty]: Start isEmpty. Operand 58897 states and 82746 transitions. [2021-11-21 00:52:52,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-21 00:52:52,599 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:52:52,599 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 1, 1] [2021-11-21 00:52:52,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-21 00:52:52,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-21 00:52:52,827 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-21 00:52:52,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:52:52,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1069468473, now seen corresponding path program 2 times [2021-11-21 00:52:52,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:52:52,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863721239] [2021-11-21 00:52:52,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:52:52,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:52:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:52:52,912 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:52:52,912 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:52:52,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863721239] [2021-11-21 00:52:52,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863721239] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:52:52,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466313251] [2021-11-21 00:52:52,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 00:52:52,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:52:52,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:52:52,915 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:52:52,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-21 00:52:52,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-11-21 00:52:52,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:52:52,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 00:52:52,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:52:53,076 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:52:53,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:52:53,272 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:52:53,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466313251] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:52:53,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1289592688] [2021-11-21 00:52:53,275 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-21 00:52:53,275 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:52:53,275 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:52:53,275 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:52:53,275 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:52:53,788 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:52:54,150 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:52:54,150 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:52:54,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2021-11-21 00:52:54,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107385326] [2021-11-21 00:52:54,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:52:54,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-21 00:52:54,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:52:54,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-21 00:52:54,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2021-11-21 00:52:54,154 INFO L87 Difference]: Start difference. First operand 58897 states and 82746 transitions. Second operand has 16 states, 15 states have (on average 7.6) internal successors, (114), 15 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 00:52:56,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:52:56,216 INFO L93 Difference]: Finished difference Result 207476 states and 294184 transitions. [2021-11-21 00:52:56,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-21 00:52:56,217 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 7.6) internal successors, (114), 15 states have internal predecessors, (114), 0 states have call successors, (0), 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 57 [2021-11-21 00:52:56,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:52:56,883 INFO L225 Difference]: With dead ends: 207476 [2021-11-21 00:52:56,884 INFO L226 Difference]: Without dead ends: 207475 [2021-11-21 00:52:56,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2021-11-21 00:52:56,973 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 674 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:52:56,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [674 Valid, 301 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:52:57,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207475 states. [2021-11-21 00:53:00,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207475 to 115067. [2021-11-21 00:53:00,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115067 states, 115061 states have (on average 1.3967895290324264) internal successors, (160716), 115066 states have internal predecessors, (160716), 0 states have call successors, (0), 0 states 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 00:53:00,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115067 states to 115067 states and 160716 transitions. [2021-11-21 00:53:00,693 INFO L78 Accepts]: Start accepts. Automaton has 115067 states and 160716 transitions. Word has length 57 [2021-11-21 00:53:00,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:53:00,694 INFO L470 AbstractCegarLoop]: Abstraction has 115067 states and 160716 transitions. [2021-11-21 00:53:00,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 7.6) internal successors, (114), 15 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 00:53:00,694 INFO L276 IsEmpty]: Start isEmpty. Operand 115067 states and 160716 transitions. [2021-11-21 00:53:00,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-21 00:53:00,701 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:53:00,701 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 1, 1] [2021-11-21 00:53:00,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-21 00:53:00,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:53:00,915 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-21 00:53:00,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:53:00,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1605996634, now seen corresponding path program 2 times [2021-11-21 00:53:00,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:53:00,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439214304] [2021-11-21 00:53:00,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:53:00,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:53:00,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:53:00,987 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:53:00,987 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:53:00,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439214304] [2021-11-21 00:53:00,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439214304] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:53:00,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298053271] [2021-11-21 00:53:00,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 00:53:00,987 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:53:00,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:53:00,988 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:53:00,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-21 00:53:01,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-11-21 00:53:01,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:53:01,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 00:53:01,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:53:01,166 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:53:01,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:53:01,376 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:53:01,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298053271] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:53:01,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1019928531] [2021-11-21 00:53:01,377 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-21 00:53:01,378 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:53:01,378 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:53:01,378 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:53:01,378 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:53:01,995 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:53:02,413 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:53:02,413 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:53:02,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2021-11-21 00:53:02,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113289082] [2021-11-21 00:53:02,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:53:02,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-21 00:53:02,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:53:02,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-21 00:53:02,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2021-11-21 00:53:02,415 INFO L87 Difference]: Start difference. First operand 115067 states and 160716 transitions. Second operand has 16 states, 15 states have (on average 9.466666666666667) internal successors, (142), 15 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 00:53:06,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:53:06,776 INFO L93 Difference]: Finished difference Result 405128 states and 571168 transitions. [2021-11-21 00:53:06,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-21 00:53:06,777 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 9.466666666666667) internal successors, (142), 15 states have internal predecessors, (142), 0 states have call successors, (0), 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 71 [2021-11-21 00:53:06,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:53:07,712 INFO L225 Difference]: With dead ends: 405128 [2021-11-21 00:53:07,712 INFO L226 Difference]: Without dead ends: 405127 [2021-11-21 00:53:07,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 181 SyntacticMatches, 14 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2021-11-21 00:53:07,788 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 320 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:53:07,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 301 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:53:08,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405127 states. [2021-11-21 00:53:14,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405127 to 224757. [2021-11-21 00:53:14,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224757 states, 224751 states have (on average 1.3887635650119465) internal successors, (312126), 224756 states have internal predecessors, (312126), 0 states have call successors, (0), 0 states 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 00:53:14,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224757 states to 224757 states and 312126 transitions. [2021-11-21 00:53:14,751 INFO L78 Accepts]: Start accepts. Automaton has 224757 states and 312126 transitions. Word has length 71 [2021-11-21 00:53:14,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:53:14,751 INFO L470 AbstractCegarLoop]: Abstraction has 224757 states and 312126 transitions. [2021-11-21 00:53:14,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 9.466666666666667) internal successors, (142), 15 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 00:53:14,752 INFO L276 IsEmpty]: Start isEmpty. Operand 224757 states and 312126 transitions. [2021-11-21 00:53:14,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-21 00:53:14,758 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:53:14,758 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 1, 1] [2021-11-21 00:53:14,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-21 00:53:14,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-21 00:53:14,958 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-21 00:53:14,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:53:14,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1165827000, now seen corresponding path program 3 times [2021-11-21 00:53:14,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:53:14,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956244979] [2021-11-21 00:53:14,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:53:14,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:53:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:53:15,079 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:53:15,079 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:53:15,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956244979] [2021-11-21 00:53:15,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956244979] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:53:15,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3908807] [2021-11-21 00:53:15,080 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 00:53:15,080 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:53:15,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:53:15,081 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:53:15,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-21 00:53:15,117 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 00:53:15,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:53:15,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-21 00:53:15,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:53:15,526 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 375 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:53:15,526 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:53:15,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3908807] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:53:15,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:53:15,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 23 [2021-11-21 00:53:15,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073156648] [2021-11-21 00:53:15,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:53:15,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-21 00:53:15,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:53:15,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-21 00:53:15,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2021-11-21 00:53:15,529 INFO L87 Difference]: Start difference. First operand 224757 states and 312126 transitions. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 00:53:17,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:53:17,295 INFO L93 Difference]: Finished difference Result 243071 states and 336740 transitions. [2021-11-21 00:53:17,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-21 00:53:17,296 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2021-11-21 00:53:17,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:53:17,296 INFO L225 Difference]: With dead ends: 243071 [2021-11-21 00:53:17,297 INFO L226 Difference]: Without dead ends: 0 [2021-11-21 00:53:17,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2021-11-21 00:53:17,444 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 144 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:53:17,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 468 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:53:17,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-21 00:53:17,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-21 00:53:17,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:53:17,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-21 00:53:17,446 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 77 [2021-11-21 00:53:17,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:53:17,446 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-21 00:53:17,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 00:53:17,447 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-21 00:53:17,447 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-21 00:53:17,449 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2021-11-21 00:53:17,449 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2021-11-21 00:53:17,449 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2021-11-21 00:53:17,449 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2021-11-21 00:53:17,450 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2021-11-21 00:53:17,450 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2021-11-21 00:53:17,450 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2021-11-21 00:53:17,450 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2021-11-21 00:53:17,450 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2021-11-21 00:53:17,451 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2021-11-21 00:53:17,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-21 00:53:17,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57186e84-a55c-4900-9fbb-4045c20b8240/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:53:17,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.