./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8 --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 30e0974778487c3ac56035f1f8ab25ce73456d36b8987ec761ccfaf99f917331 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:20:20,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:20:20,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:20:20,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:20:20,822 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:20:20,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:20:20,826 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:20:20,828 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:20:20,831 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:20:20,832 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:20:20,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:20:20,835 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:20:20,836 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:20:20,837 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:20:20,839 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:20:20,841 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:20:20,842 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:20:20,843 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:20:20,845 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:20:20,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:20:20,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:20:20,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:20:20,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:20:20,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:20:20,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:20:20,859 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:20:20,859 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:20:20,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:20:20,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:20:20,863 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:20:20,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:20:20,864 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:20:20,865 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:20:20,866 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:20:20,868 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:20:20,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:20:20,869 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:20:20,869 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:20:20,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:20:20,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:20:20,871 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:20:20,872 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-07 02:20:20,899 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:20:20,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:20:20,900 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:20:20,900 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:20:20,900 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:20:20,901 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:20:20,901 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:20:20,901 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:20:20,901 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:20:20,901 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:20:20,902 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:20:20,902 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:20:20,902 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:20:20,902 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:20:20,903 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:20:20,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:20:20,904 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 02:20:20,904 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:20:20,904 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:20:20,904 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:20:20,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:20:20,905 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:20:20,905 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-07 02:20:20,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:20:20,905 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:20:20,906 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:20:20,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:20:20,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:20:20,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:20:20,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:20:20,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:20:20,907 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:20:20,907 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:20:20,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:20:20,908 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:20:20,908 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:20:20,908 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:20:20,908 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_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30e0974778487c3ac56035f1f8ab25ce73456d36b8987ec761ccfaf99f917331 [2021-11-07 02:20:21,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:20:21,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:20:21,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:20:21,290 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:20:21,291 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:20:21,292 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c [2021-11-07 02:20:21,366 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/data/7e4ede782/70625b8d0949462fa5d8060a540291c9/FLAGbfd16a140 [2021-11-07 02:20:21,927 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:20:21,928 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c [2021-11-07 02:20:21,939 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/data/7e4ede782/70625b8d0949462fa5d8060a540291c9/FLAGbfd16a140 [2021-11-07 02:20:22,289 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/data/7e4ede782/70625b8d0949462fa5d8060a540291c9 [2021-11-07 02:20:22,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:20:22,293 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:20:22,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:20:22,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:20:22,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:20:22,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:20:22" (1/1) ... [2021-11-07 02:20:22,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21f8ee54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:20:22, skipping insertion in model container [2021-11-07 02:20:22,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:20:22" (1/1) ... [2021-11-07 02:20:22,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:20:22,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:20:22,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:20:22,549 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:20:22,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:20:22,575 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:20:22,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:20:22 WrapperNode [2021-11-07 02:20:22,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:20:22,577 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:20:22,578 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:20:22,578 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:20:22,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:20:22" (1/1) ... [2021-11-07 02:20:22,591 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:20:22" (1/1) ... [2021-11-07 02:20:22,610 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:20:22,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:20:22,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:20:22,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:20:22,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:20:22" (1/1) ... [2021-11-07 02:20:22,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:20:22" (1/1) ... [2021-11-07 02:20:22,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:20:22" (1/1) ... [2021-11-07 02:20:22,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:20:22" (1/1) ... [2021-11-07 02:20:22,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:20:22" (1/1) ... [2021-11-07 02:20:22,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:20:22" (1/1) ... [2021-11-07 02:20:22,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:20:22" (1/1) ... [2021-11-07 02:20:22,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:20:22,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:20:22,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:20:22,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:20:22,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:20:22" (1/1) ... [2021-11-07 02:20:22,646 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:20:22,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:20:22,680 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:20:22,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:20:22,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:20:22,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:20:23,014 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:20:23,014 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-07 02:20:23,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:20:23 BoogieIcfgContainer [2021-11-07 02:20:23,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:20:23,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:20:23,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:20:23,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:20:23,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:20:22" (1/3) ... [2021-11-07 02:20:23,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ddbb594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:20:23, skipping insertion in model container [2021-11-07 02:20:23,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:20:22" (2/3) ... [2021-11-07 02:20:23,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ddbb594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:20:23, skipping insertion in model container [2021-11-07 02:20:23,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:20:23" (3/3) ... [2021-11-07 02:20:23,043 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-Fig1.c [2021-11-07 02:20:23,049 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:20:23,049 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 02:20:23,145 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:20:23,160 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 [2021-11-07 02:20:23,161 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 02:20:23,178 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:23,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-07 02:20:23,184 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:23,186 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-07 02:20:23,187 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 02:20:23,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:23,199 INFO L85 PathProgramCache]: Analyzing trace with hash 964268, now seen corresponding path program 1 times [2021-11-07 02:20:23,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:20:23,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464601426] [2021-11-07 02:20:23,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:23,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:20:23,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:23,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:20:23,377 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:20:23,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464601426] [2021-11-07 02:20:23,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464601426] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 02:20:23,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:20:23,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-07 02:20:23,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540902595] [2021-11-07 02:20:23,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:20:23,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:20:23,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:20:23,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:20:23,412 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2021-11-07 02:20:23,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:20:23,511 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2021-11-07 02:20:23,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:20:23,513 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 [2021-11-07 02:20:23,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:20:23,521 INFO L225 Difference]: With dead ends: 48 [2021-11-07 02:20:23,522 INFO L226 Difference]: Without dead ends: 29 [2021-11-07 02:20:23,525 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:20:23,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-07 02:20:23,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2021-11-07 02:20:23,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.65) internal successors, (33), 25 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) [2021-11-07 02:20:23,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2021-11-07 02:20:23,565 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 4 [2021-11-07 02:20:23,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:20:23,566 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2021-11-07 02:20:23,567 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) [2021-11-07 02:20:23,568 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2021-11-07 02:20:23,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-07 02:20:23,569 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:23,569 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-07 02:20:23,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 02:20:23,571 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 02:20:23,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:23,574 INFO L85 PathProgramCache]: Analyzing trace with hash 29892385, now seen corresponding path program 1 times [2021-11-07 02:20:23,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:20:23,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099712603] [2021-11-07 02:20:23,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:23,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:20:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:23,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:20:23,624 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:20:23,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099712603] [2021-11-07 02:20:23,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099712603] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 02:20:23,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:20:23,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-07 02:20:23,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450276625] [2021-11-07 02:20:23,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:20:23,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:20:23,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:20:23,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:20:23,632 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:23,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:20:23,662 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2021-11-07 02:20:23,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:20:23,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-07 02:20:23,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:20:23,666 INFO L225 Difference]: With dead ends: 27 [2021-11-07 02:20:23,667 INFO L226 Difference]: Without dead ends: 25 [2021-11-07 02:20:23,668 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:20:23,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-07 02:20:23,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2021-11-07 02:20:23,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.5) internal successors, (30), 23 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:23,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2021-11-07 02:20:23,680 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 5 [2021-11-07 02:20:23,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:20:23,681 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2021-11-07 02:20:23,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:23,682 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2021-11-07 02:20:23,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 02:20:23,683 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:23,683 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 02:20:23,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 02:20:23,685 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 02:20:23,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:23,696 INFO L85 PathProgramCache]: Analyzing trace with hash 925813859, now seen corresponding path program 1 times [2021-11-07 02:20:23,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:20:23,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320459801] [2021-11-07 02:20:23,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:23,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:20:23,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:23,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:20:23,752 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:20:23,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320459801] [2021-11-07 02:20:23,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320459801] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 02:20:23,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:20:23,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-07 02:20:23,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757735801] [2021-11-07 02:20:23,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:20:23,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:20:23,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:20:23,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:20:23,763 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:23,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:20:23,779 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2021-11-07 02:20:23,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:20:23,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-07 02:20:23,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:20:23,782 INFO L225 Difference]: With dead ends: 24 [2021-11-07 02:20:23,782 INFO L226 Difference]: Without dead ends: 23 [2021-11-07 02:20:23,782 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:20:23,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-07 02:20:23,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-07 02:20:23,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.4) internal successors, (28), 22 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:23,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2021-11-07 02:20:23,788 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 6 [2021-11-07 02:20:23,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:20:23,789 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2021-11-07 02:20:23,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:23,789 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2021-11-07 02:20:23,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 02:20:23,790 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:23,790 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:20:23,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 02:20:23,791 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 02:20:23,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:23,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1364541373, now seen corresponding path program 1 times [2021-11-07 02:20:23,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:20:23,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264376331] [2021-11-07 02:20:23,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:23,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:20:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:23,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:20:23,826 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:20:23,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264376331] [2021-11-07 02:20:23,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264376331] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 02:20:23,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:20:23,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 02:20:23,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123266953] [2021-11-07 02:20:23,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:20:23,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:20:23,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:20:23,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:20:23,833 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:23,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:20:23,850 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2021-11-07 02:20:23,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:20:23,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-07 02:20:23,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:20:23,854 INFO L225 Difference]: With dead ends: 30 [2021-11-07 02:20:23,854 INFO L226 Difference]: Without dead ends: 29 [2021-11-07 02:20:23,855 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:20:23,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-07 02:20:23,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 22. [2021-11-07 02:20:23,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:23,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-11-07 02:20:23,865 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 7 [2021-11-07 02:20:23,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:20:23,865 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-11-07 02:20:23,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:23,866 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-11-07 02:20:23,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 02:20:23,866 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:23,867 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-11-07 02:20:23,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 02:20:23,867 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 02:20:23,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:23,868 INFO L85 PathProgramCache]: Analyzing trace with hash 864087095, now seen corresponding path program 1 times [2021-11-07 02:20:23,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:20:23,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563769767] [2021-11-07 02:20:23,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:23,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:20:23,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:23,919 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:20:23,919 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:20:23,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563769767] [2021-11-07 02:20:23,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563769767] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 02:20:23,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970108454] [2021-11-07 02:20:23,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:23,920 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:20:23,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:20:23,925 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:20:23,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 02:20:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:23,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:20:23,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:24,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:20:24,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:24,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:20:24,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970108454] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:20:24,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1077108519] [2021-11-07 02:20:24,184 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-07 02:20:24,185 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 02:20:24,190 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 02:20:24,199 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 02:20:24,199 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 02:20:24,253 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:24,261 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-07 02:20:24,281 INFO L180 QuantifierPusher]: treesize reduction 3, result has 91.2 percent of original size [2021-11-07 02:20:24,293 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-07 02:20:24,310 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:24,318 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:20:24,331 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:24,335 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:20:24,338 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-07 02:20:24,346 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:24,354 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 02:20:24,360 INFO L180 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-11-07 02:20:24,365 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 02:20:24,372 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:24,381 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:20:24,388 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:24,395 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:20:24,399 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-07 02:20:24,404 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:24,413 INFO L185 QuantifierPusher]: treesize reduction 7, result has 75.0 percent of original size 21 [2021-11-07 02:20:24,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:24,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:24,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:24,513 INFO L180 QuantifierPusher]: treesize reduction 16, result has 77.8 percent of original size [2021-11-07 02:20:24,516 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-07 02:20:24,520 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:24,523 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:20:24,526 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:24,528 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:20:24,531 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-11-07 02:20:24,535 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:24,540 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-11-07 02:20:24,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:24,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:24,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:24,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:24,566 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-07 02:20:24,568 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:20:24,571 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:24,574 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:20:24,577 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:24,580 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:20:24,581 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 02:20:24,584 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:24,588 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-07 02:20:24,592 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-07 02:20:24,593 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:20:24,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:24,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:24,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:24,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:24,613 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:24,616 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:20:24,619 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:24,621 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:20:24,623 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 02:20:24,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:24,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:24,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:24,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:24,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:24,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:24,667 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:24,675 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-07 02:20:24,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:24,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:24,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:24,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:24,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:24,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:24,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:24,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:24,723 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 02:20:24,965 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:20:24,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 02:20:24,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2021-11-07 02:20:24,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93822379] [2021-11-07 02:20:24,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:20:24,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:20:24,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:20:24,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-07 02:20:24,995 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:25,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:20:25,088 INFO L93 Difference]: Finished difference Result 59 states and 75 transitions. [2021-11-07 02:20:25,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:20:25,089 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-07 02:20:25,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:20:25,091 INFO L225 Difference]: With dead ends: 59 [2021-11-07 02:20:25,091 INFO L226 Difference]: Without dead ends: 57 [2021-11-07 02:20:25,092 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-07 02:20:25,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-07 02:20:25,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 40. [2021-11-07 02:20:25,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 38 states have (on average 1.263157894736842) internal successors, (48), 39 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:25,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2021-11-07 02:20:25,108 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 10 [2021-11-07 02:20:25,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:20:25,109 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2021-11-07 02:20:25,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:25,111 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2021-11-07 02:20:25,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-07 02:20:25,112 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:25,112 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1] [2021-11-07 02:20:25,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:25,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:20:25,338 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 02:20:25,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:25,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1803666446, now seen corresponding path program 2 times [2021-11-07 02:20:25,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:20:25,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15471163] [2021-11-07 02:20:25,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:25,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:20:25,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:25,402 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:20:25,402 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:20:25,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15471163] [2021-11-07 02:20:25,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15471163] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 02:20:25,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126026497] [2021-11-07 02:20:25,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 02:20:25,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:20:25,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:20:25,404 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:20:25,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 02:20:25,451 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-07 02:20:25,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:20:25,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:20:25,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:25,527 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:20:25,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:25,651 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:20:25,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126026497] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:20:25,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [977985868] [2021-11-07 02:20:25,655 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-07 02:20:25,655 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 02:20:25,656 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 02:20:25,656 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 02:20:25,657 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 02:20:25,676 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:25,679 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-07 02:20:25,684 INFO L180 QuantifierPusher]: treesize reduction 3, result has 91.2 percent of original size [2021-11-07 02:20:25,687 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-07 02:20:25,693 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:25,700 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:20:25,703 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:25,711 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:20:25,712 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-07 02:20:25,719 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:25,726 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 02:20:25,729 INFO L180 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-11-07 02:20:25,731 INFO L185 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size 16 [2021-11-07 02:20:25,735 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.0 percent of original size [2021-11-07 02:20:25,740 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:20:25,742 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:25,748 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:20:25,754 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 02:20:25,756 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:25,762 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-07 02:20:25,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:25,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:25,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:25,791 INFO L180 QuantifierPusher]: treesize reduction 11, result has 82.3 percent of original size [2021-11-07 02:20:25,794 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-07 02:20:25,806 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:25,810 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:20:25,813 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:25,816 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:20:25,817 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-07 02:20:25,822 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:25,828 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-11-07 02:20:25,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:25,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:25,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:25,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:25,861 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-07 02:20:25,863 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:20:25,867 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:25,869 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:20:25,871 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:25,875 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:20:25,877 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 02:20:25,880 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:25,886 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-07 02:20:25,888 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-07 02:20:25,891 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:20:25,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:25,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:25,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:25,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:25,909 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:25,912 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:20:25,914 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:25,916 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:20:25,918 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 02:20:25,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:25,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:25,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:25,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:25,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:25,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:25,944 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:25,949 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-07 02:20:25,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:25,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:25,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:25,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:25,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:25,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:25,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:25,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:25,988 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 02:20:26,222 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:20:26,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 02:20:26,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-07 02:20:26,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751600632] [2021-11-07 02:20:26,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 02:20:26,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:20:26,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 02:20:26,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=198, Unknown=0, NotChecked=0, Total=306 [2021-11-07 02:20:26,225 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand has 12 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:26,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:20:26,374 INFO L93 Difference]: Finished difference Result 171 states and 221 transitions. [2021-11-07 02:20:26,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 02:20:26,374 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 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 22 [2021-11-07 02:20:26,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:20:26,380 INFO L225 Difference]: With dead ends: 171 [2021-11-07 02:20:26,380 INFO L226 Difference]: Without dead ends: 169 [2021-11-07 02:20:26,380 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=198, Unknown=0, NotChecked=0, Total=306 [2021-11-07 02:20:26,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-11-07 02:20:26,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 100. [2021-11-07 02:20:26,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 98 states have (on average 1.2244897959183674) internal successors, (120), 99 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:26,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 120 transitions. [2021-11-07 02:20:26,409 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 120 transitions. Word has length 22 [2021-11-07 02:20:26,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:20:26,410 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 120 transitions. [2021-11-07 02:20:26,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:26,410 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 120 transitions. [2021-11-07 02:20:26,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 02:20:26,413 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:26,413 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1] [2021-11-07 02:20:26,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:26,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:20:26,626 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 02:20:26,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:26,626 INFO L85 PathProgramCache]: Analyzing trace with hash -885058500, now seen corresponding path program 3 times [2021-11-07 02:20:26,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:20:26,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226426568] [2021-11-07 02:20:26,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:26,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:20:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:26,785 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:20:26,785 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:20:26,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226426568] [2021-11-07 02:20:26,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226426568] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 02:20:26,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124744517] [2021-11-07 02:20:26,786 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 02:20:26,786 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:20:26,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:20:26,787 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:20:26,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 02:20:26,864 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 02:20:26,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:20:26,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 02:20:26,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:26,999 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:20:26,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:27,297 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:20:27,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124744517] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:20:27,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [99915422] [2021-11-07 02:20:27,300 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-07 02:20:27,300 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 02:20:27,300 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 02:20:27,300 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 02:20:27,301 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 02:20:27,306 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:27,307 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-07 02:20:27,311 INFO L180 QuantifierPusher]: treesize reduction 3, result has 91.2 percent of original size [2021-11-07 02:20:27,319 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-07 02:20:27,321 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:27,324 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:20:27,325 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:27,327 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:20:27,329 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-07 02:20:27,331 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:27,336 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 02:20:27,339 INFO L180 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-11-07 02:20:27,344 INFO L185 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size 16 [2021-11-07 02:20:27,346 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.0 percent of original size [2021-11-07 02:20:27,349 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:20:27,350 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:27,352 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:20:27,354 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 02:20:27,356 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:27,360 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-07 02:20:27,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:27,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:27,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:27,391 INFO L180 QuantifierPusher]: treesize reduction 11, result has 82.3 percent of original size [2021-11-07 02:20:27,394 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-07 02:20:27,397 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:27,401 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:20:27,402 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:27,407 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:20:27,409 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-07 02:20:27,411 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:27,416 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-11-07 02:20:27,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:27,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:27,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:27,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:27,429 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-07 02:20:27,430 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:20:27,433 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:27,441 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:20:27,443 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:27,445 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:20:27,446 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 02:20:27,448 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:27,455 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-07 02:20:27,458 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-07 02:20:27,461 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:20:27,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:27,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:27,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:27,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:27,474 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:27,478 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:20:27,479 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:27,481 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:20:27,482 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 02:20:27,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:27,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:27,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:27,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:27,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:27,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:27,502 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:27,508 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-07 02:20:27,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:27,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:27,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:27,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:27,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:27,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:27,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:27,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:27,539 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 02:20:27,756 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:20:27,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 02:20:27,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2021-11-07 02:20:27,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518088015] [2021-11-07 02:20:27,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-07 02:20:27,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:20:27,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-07 02:20:27,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=528, Unknown=0, NotChecked=0, Total=870 [2021-11-07 02:20:27,758 INFO L87 Difference]: Start difference. First operand 100 states and 120 transitions. Second operand has 24 states, 23 states have (on average 4.0) internal successors, (92), 23 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:28,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:20:28,063 INFO L93 Difference]: Finished difference Result 540 states and 689 transitions. [2021-11-07 02:20:28,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 02:20:28,063 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.0) internal successors, (92), 23 states have internal predecessors, (92), 0 states have call successors, (0), 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 46 [2021-11-07 02:20:28,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:20:28,067 INFO L225 Difference]: With dead ends: 540 [2021-11-07 02:20:28,067 INFO L226 Difference]: Without dead ends: 538 [2021-11-07 02:20:28,068 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=342, Invalid=528, Unknown=0, NotChecked=0, Total=870 [2021-11-07 02:20:28,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-11-07 02:20:28,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 220. [2021-11-07 02:20:28,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 218 states have (on average 1.2110091743119267) internal successors, (264), 219 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:28,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 264 transitions. [2021-11-07 02:20:28,087 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 264 transitions. Word has length 46 [2021-11-07 02:20:28,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:20:28,087 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 264 transitions. [2021-11-07 02:20:28,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.0) internal successors, (92), 23 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:28,088 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 264 transitions. [2021-11-07 02:20:28,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-07 02:20:28,092 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:28,092 INFO L513 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 1, 1, 1, 1] [2021-11-07 02:20:28,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:28,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-11-07 02:20:28,306 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 02:20:28,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:28,307 INFO L85 PathProgramCache]: Analyzing trace with hash -648989032, now seen corresponding path program 4 times [2021-11-07 02:20:28,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:20:28,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246852742] [2021-11-07 02:20:28,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:28,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:20:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:28,753 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:20:28,754 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:20:28,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246852742] [2021-11-07 02:20:28,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246852742] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 02:20:28,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505639640] [2021-11-07 02:20:28,754 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 02:20:28,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:20:28,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:20:28,755 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:20:28,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 02:20:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:28,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-07 02:20:28,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:29,142 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:20:29,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:30,134 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:20:30,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505639640] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:20:30,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [284751866] [2021-11-07 02:20:30,137 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-07 02:20:30,137 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 02:20:30,137 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 02:20:30,137 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 02:20:30,137 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 02:20:30,143 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:30,145 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-07 02:20:30,149 INFO L180 QuantifierPusher]: treesize reduction 3, result has 91.2 percent of original size [2021-11-07 02:20:30,152 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-07 02:20:30,154 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:30,157 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:20:30,158 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:30,161 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:20:30,163 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-07 02:20:30,166 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:30,173 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 02:20:30,176 INFO L180 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-11-07 02:20:30,177 INFO L185 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size 16 [2021-11-07 02:20:30,180 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.0 percent of original size [2021-11-07 02:20:30,182 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:20:30,183 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:30,187 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:20:30,188 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 02:20:30,190 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:30,192 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-07 02:20:30,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:30,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:30,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:30,206 INFO L180 QuantifierPusher]: treesize reduction 11, result has 82.3 percent of original size [2021-11-07 02:20:30,208 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-07 02:20:30,211 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:30,213 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:20:30,218 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:30,220 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:20:30,221 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-07 02:20:30,225 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:30,228 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-11-07 02:20:30,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:30,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:30,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:30,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:30,243 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-07 02:20:30,244 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:20:30,248 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:30,251 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:20:30,253 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:30,255 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:20:30,257 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 02:20:30,258 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:30,261 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-07 02:20:30,266 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-07 02:20:30,267 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:20:30,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:30,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:30,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:30,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:30,283 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:30,295 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:20:30,297 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:30,298 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:20:30,299 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 02:20:30,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:30,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:30,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:30,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:30,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:30,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:30,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:30,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:30,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:30,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:30,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:30,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:30,327 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:30,329 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:20:30,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:30,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:30,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:30,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:30,340 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 02:20:30,486 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:20:30,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 02:20:30,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2021-11-07 02:20:30,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592609910] [2021-11-07 02:20:30,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-07 02:20:30,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:20:30,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-07 02:20:30,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1236, Invalid=1520, Unknown=0, NotChecked=0, Total=2756 [2021-11-07 02:20:30,490 INFO L87 Difference]: Start difference. First operand 220 states and 264 transitions. Second operand has 48 states, 47 states have (on average 4.0) internal successors, (188), 47 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:31,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:20:31,335 INFO L93 Difference]: Finished difference Result 1818 states and 2273 transitions. [2021-11-07 02:20:31,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-07 02:20:31,336 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.0) internal successors, (188), 47 states have internal predecessors, (188), 0 states have call successors, (0), 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 94 [2021-11-07 02:20:31,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:20:31,346 INFO L225 Difference]: With dead ends: 1818 [2021-11-07 02:20:31,346 INFO L226 Difference]: Without dead ends: 1816 [2021-11-07 02:20:31,349 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1236, Invalid=1520, Unknown=0, NotChecked=0, Total=2756 [2021-11-07 02:20:31,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1816 states. [2021-11-07 02:20:31,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1816 to 460. [2021-11-07 02:20:31,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 458 states have (on average 1.205240174672489) internal successors, (552), 459 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:31,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 552 transitions. [2021-11-07 02:20:31,382 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 552 transitions. Word has length 94 [2021-11-07 02:20:31,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:20:31,383 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 552 transitions. [2021-11-07 02:20:31,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.0) internal successors, (188), 47 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:31,383 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 552 transitions. [2021-11-07 02:20:31,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-07 02:20:31,390 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:31,391 INFO L513 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 1, 1, 1, 1] [2021-11-07 02:20:31,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:31,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:20:31,602 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 02:20:31,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:31,603 INFO L85 PathProgramCache]: Analyzing trace with hash 136020816, now seen corresponding path program 5 times [2021-11-07 02:20:31,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:20:31,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322250335] [2021-11-07 02:20:31,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:31,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:20:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:32,809 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:20:32,810 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:20:32,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322250335] [2021-11-07 02:20:32,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322250335] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 02:20:32,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768445128] [2021-11-07 02:20:32,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 02:20:32,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:20:32,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:20:32,813 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:20:32,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 02:20:33,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2021-11-07 02:20:33,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:20:33,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-07 02:20:33,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:33,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:20:33,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:36,797 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:20:36,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768445128] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:20:36,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1864588213] [2021-11-07 02:20:36,800 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-07 02:20:36,800 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 02:20:36,801 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 02:20:36,801 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 02:20:36,801 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 02:20:36,822 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:36,824 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-07 02:20:36,827 INFO L180 QuantifierPusher]: treesize reduction 3, result has 91.2 percent of original size [2021-11-07 02:20:36,830 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-07 02:20:36,849 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:36,851 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:20:36,852 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:36,853 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:20:36,854 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-07 02:20:36,856 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:36,859 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 02:20:36,861 INFO L180 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-11-07 02:20:36,863 INFO L185 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size 16 [2021-11-07 02:20:36,864 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.0 percent of original size [2021-11-07 02:20:36,868 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:20:36,869 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:36,871 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:20:36,872 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 02:20:36,873 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:36,876 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-07 02:20:36,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:36,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:36,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:36,889 INFO L180 QuantifierPusher]: treesize reduction 11, result has 82.3 percent of original size [2021-11-07 02:20:36,891 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-07 02:20:36,893 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:36,896 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:20:36,898 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:36,899 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:20:36,901 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-07 02:20:36,903 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:36,906 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-11-07 02:20:36,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:36,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:36,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:36,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:36,919 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-07 02:20:36,921 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:20:36,923 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:36,925 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:20:36,927 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:36,929 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:20:36,930 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 02:20:36,932 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:36,934 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-07 02:20:36,937 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-07 02:20:36,938 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:20:36,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:36,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:36,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:36,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:36,948 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:36,950 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:20:36,952 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:36,953 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:20:36,954 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 02:20:36,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:36,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:36,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:36,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:36,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:36,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:36,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:36,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:36,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:36,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:36,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:36,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:36,975 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:36,977 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:20:36,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:36,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:36,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:36,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:36,985 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 02:20:37,172 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:20:37,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 02:20:37,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2021-11-07 02:20:37,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690886260] [2021-11-07 02:20:37,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-11-07 02:20:37,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:20:37,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-11-07 02:20:37,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4764, Invalid=5336, Unknown=0, NotChecked=0, Total=10100 [2021-11-07 02:20:37,185 INFO L87 Difference]: Start difference. First operand 460 states and 552 transitions. Second operand has 96 states, 95 states have (on average 4.0) internal successors, (380), 95 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:40,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:20:40,882 INFO L93 Difference]: Finished difference Result 6534 states and 8033 transitions. [2021-11-07 02:20:40,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-11-07 02:20:40,883 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 4.0) internal successors, (380), 95 states have internal predecessors, (380), 0 states have call successors, (0), 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 190 [2021-11-07 02:20:40,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:20:40,921 INFO L225 Difference]: With dead ends: 6534 [2021-11-07 02:20:40,921 INFO L226 Difference]: Without dead ends: 6532 [2021-11-07 02:20:40,930 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 516 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=4764, Invalid=5336, Unknown=0, NotChecked=0, Total=10100 [2021-11-07 02:20:40,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6532 states. [2021-11-07 02:20:41,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6532 to 940. [2021-11-07 02:20:41,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 938 states have (on average 1.2025586353944564) internal successors, (1128), 939 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:41,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1128 transitions. [2021-11-07 02:20:41,019 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1128 transitions. Word has length 190 [2021-11-07 02:20:41,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:20:41,020 INFO L470 AbstractCegarLoop]: Abstraction has 940 states and 1128 transitions. [2021-11-07 02:20:41,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 4.0) internal successors, (380), 95 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:41,021 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1128 transitions. [2021-11-07 02:20:41,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2021-11-07 02:20:41,026 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:41,027 INFO L513 BasicCegarLoop]: trace histogram [95, 95, 94, 94, 1, 1, 1, 1] [2021-11-07 02:20:41,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:41,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:20:41,247 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 02:20:41,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:41,248 INFO L85 PathProgramCache]: Analyzing trace with hash 579353792, now seen corresponding path program 6 times [2021-11-07 02:20:41,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:20:41,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958995153] [2021-11-07 02:20:41,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:41,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:20:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:44,962 INFO L134 CoverageAnalysis]: Checked inductivity of 17766 backedges. 0 proven. 17766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:20:44,963 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:20:44,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958995153] [2021-11-07 02:20:44,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958995153] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 02:20:44,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911836658] [2021-11-07 02:20:44,963 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 02:20:44,963 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:20:44,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:20:44,986 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:20:45,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 02:20:45,360 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 02:20:45,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:20:45,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 96 conjunts are in the unsatisfiable core [2021-11-07 02:20:45,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:46,481 INFO L134 CoverageAnalysis]: Checked inductivity of 17766 backedges. 0 proven. 17766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:20:46,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:56,288 INFO L134 CoverageAnalysis]: Checked inductivity of 17766 backedges. 0 proven. 17766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:20:56,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911836658] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:20:56,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [623034420] [2021-11-07 02:20:56,291 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-07 02:20:56,291 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 02:20:56,292 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 02:20:56,292 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 02:20:56,292 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 02:20:56,299 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:56,300 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-07 02:20:56,303 INFO L180 QuantifierPusher]: treesize reduction 3, result has 91.2 percent of original size [2021-11-07 02:20:56,304 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-07 02:20:56,306 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:56,307 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:20:56,309 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:56,312 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:20:56,313 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-07 02:20:56,315 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:56,317 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 02:20:56,319 INFO L180 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-11-07 02:20:56,320 INFO L185 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size 16 [2021-11-07 02:20:56,322 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.0 percent of original size [2021-11-07 02:20:56,323 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:20:56,324 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:56,328 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:20:56,330 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 02:20:56,332 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:56,334 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-07 02:20:56,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:56,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:56,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:56,360 INFO L180 QuantifierPusher]: treesize reduction 11, result has 82.3 percent of original size [2021-11-07 02:20:56,361 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-07 02:20:56,363 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:56,377 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:20:56,378 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:56,380 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:20:56,381 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-07 02:20:56,383 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:56,385 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-11-07 02:20:56,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:56,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:56,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:56,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:56,409 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-07 02:20:56,410 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:20:56,412 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:56,415 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:20:56,418 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:56,420 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:20:56,421 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 02:20:56,422 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:56,424 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-07 02:20:56,428 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-07 02:20:56,431 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:20:56,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:56,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:56,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:56,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:56,445 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:56,447 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:20:56,448 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:56,449 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:20:56,450 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 02:20:56,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:56,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:56,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:56,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:56,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:56,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:56,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:56,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:56,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:56,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:56,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:56,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:56,477 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:20:56,478 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:20:56,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:56,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:56,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:56,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:20:56,491 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 02:20:56,764 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:20:56,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 02:20:56,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2021-11-07 02:20:56,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231814280] [2021-11-07 02:20:56,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-11-07 02:20:56,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:20:56,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-11-07 02:20:56,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18732, Invalid=19880, Unknown=0, NotChecked=0, Total=38612 [2021-11-07 02:20:56,787 INFO L87 Difference]: Start difference. First operand 940 states and 1128 transitions. Second operand has 192 states, 191 states have (on average 4.0) internal successors, (764), 191 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:21:28,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:21:28,259 INFO L93 Difference]: Finished difference Result 24606 states and 29921 transitions. [2021-11-07 02:21:28,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-11-07 02:21:28,260 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 4.0) internal successors, (764), 191 states have internal predecessors, (764), 0 states have call successors, (0), 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 382 [2021-11-07 02:21:28,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:21:28,367 INFO L225 Difference]: With dead ends: 24606 [2021-11-07 02:21:28,367 INFO L226 Difference]: Without dead ends: 24604 [2021-11-07 02:21:28,391 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1239 GetRequests, 1044 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1609 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=18732, Invalid=19880, Unknown=0, NotChecked=0, Total=38612 [2021-11-07 02:21:28,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24604 states. [2021-11-07 02:21:28,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24604 to 1900. [2021-11-07 02:21:28,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1900 states, 1898 states have (on average 1.2012644889357218) internal successors, (2280), 1899 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:21:28,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1900 states to 1900 states and 2280 transitions. [2021-11-07 02:21:28,699 INFO L78 Accepts]: Start accepts. Automaton has 1900 states and 2280 transitions. Word has length 382 [2021-11-07 02:21:28,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:21:28,700 INFO L470 AbstractCegarLoop]: Abstraction has 1900 states and 2280 transitions. [2021-11-07 02:21:28,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 4.0) internal successors, (764), 191 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:21:28,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1900 states and 2280 transitions. [2021-11-07 02:21:28,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 767 [2021-11-07 02:21:28,732 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:21:28,733 INFO L513 BasicCegarLoop]: trace histogram [191, 191, 190, 190, 1, 1, 1, 1] [2021-11-07 02:21:28,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:21:28,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2021-11-07 02:21:28,950 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 02:21:28,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:21:28,951 INFO L85 PathProgramCache]: Analyzing trace with hash -591253600, now seen corresponding path program 7 times [2021-11-07 02:21:28,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:21:28,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120629253] [2021-11-07 02:21:28,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:28,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:21:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:42,037 INFO L134 CoverageAnalysis]: Checked inductivity of 72390 backedges. 0 proven. 72390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:21:42,038 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:21:42,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120629253] [2021-11-07 02:21:42,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120629253] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 02:21:42,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999574878] [2021-11-07 02:21:42,039 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 02:21:42,039 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:21:42,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:21:42,046 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:21:42,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 02:21:42,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:42,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 1349 conjuncts, 192 conjunts are in the unsatisfiable core [2021-11-07 02:21:42,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:45,073 INFO L134 CoverageAnalysis]: Checked inductivity of 72390 backedges. 0 proven. 72390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:21:45,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:21,619 INFO L134 CoverageAnalysis]: Checked inductivity of 72390 backedges. 0 proven. 72390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:22:21,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999574878] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:22:21,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1491126115] [2021-11-07 02:22:21,621 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-07 02:22:21,622 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 02:22:21,622 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 02:22:21,622 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 02:22:21,622 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 02:22:21,634 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:22:21,635 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-07 02:22:21,637 INFO L180 QuantifierPusher]: treesize reduction 3, result has 91.2 percent of original size [2021-11-07 02:22:21,639 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-07 02:22:21,643 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:22:21,645 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:22:21,646 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:22:21,647 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:22:21,648 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-07 02:22:21,651 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:22:21,659 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 02:22:21,661 INFO L180 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-11-07 02:22:21,663 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 02:22:21,664 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:22:21,666 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:22:21,666 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:22:21,668 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:22:21,669 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-07 02:22:21,670 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:22:21,673 INFO L185 QuantifierPusher]: treesize reduction 7, result has 75.0 percent of original size 21 [2021-11-07 02:22:21,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:22:21,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:22:21,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:22:21,695 INFO L180 QuantifierPusher]: treesize reduction 16, result has 77.8 percent of original size [2021-11-07 02:22:21,696 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-07 02:22:21,698 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:22:21,699 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:22:21,700 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:22:21,702 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:22:21,703 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-11-07 02:22:21,704 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:22:21,707 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-11-07 02:22:21,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:22:21,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:22:21,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:22:21,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:22:21,717 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-07 02:22:21,718 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:22:21,719 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:22:21,720 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:22:21,721 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:22:21,722 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:22:21,723 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 02:22:21,724 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:22:21,726 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-07 02:22:21,728 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-07 02:22:21,729 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:22:21,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:22:21,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:22:21,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:22:21,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:22:21,742 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:22:21,744 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:22:21,745 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:22:21,746 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:22:21,747 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 02:22:21,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:22:21,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:22:21,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:22:21,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:22:21,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:22:21,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:22:21,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:22:21,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:22:21,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:22:21,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:22:21,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:22:21,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:22:21,765 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:22:21,766 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:22:21,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:22:21,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:22:21,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:22:21,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:22:21,773 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 02:22:22,143 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:22:22,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 02:22:22,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 382 [2021-11-07 02:22:22,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214046109] [2021-11-07 02:22:22,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2021-11-07 02:22:22,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:22:22,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2021-11-07 02:22:22,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74316, Invalid=76616, Unknown=0, NotChecked=0, Total=150932 [2021-11-07 02:22:22,185 INFO L87 Difference]: Start difference. First operand 1900 states and 2280 transitions. Second operand has 384 states, 383 states have (on average 4.0) internal successors, (1532), 383 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:29:30,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:29:30,477 INFO L93 Difference]: Finished difference Result 95310 states and 115169 transitions. [2021-11-07 02:29:30,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2021-11-07 02:29:30,478 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 4.0) internal successors, (1532), 383 states have internal predecessors, (1532), 0 states have call successors, (0), 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 766 [2021-11-07 02:29:30,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:29:30,609 INFO L225 Difference]: With dead ends: 95310 [2021-11-07 02:29:30,609 INFO L226 Difference]: Without dead ends: 95308 [2021-11-07 02:29:30,657 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2487 GetRequests, 2100 SyntacticMatches, 0 SemanticMatches, 387 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3241 ImplicationChecksByTransitivity, 46.7s TimeCoverageRelationStatistics Valid=74316, Invalid=76616, Unknown=0, NotChecked=0, Total=150932 [2021-11-07 02:29:30,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95308 states. [2021-11-07 02:29:31,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95308 to 3820. [2021-11-07 02:29:31,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3820 states, 3818 states have (on average 1.2006286013619696) internal successors, (4584), 3819 states have internal predecessors, (4584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:29:31,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3820 states to 3820 states and 4584 transitions. [2021-11-07 02:29:31,713 INFO L78 Accepts]: Start accepts. Automaton has 3820 states and 4584 transitions. Word has length 766 [2021-11-07 02:29:31,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:29:31,715 INFO L470 AbstractCegarLoop]: Abstraction has 3820 states and 4584 transitions. [2021-11-07 02:29:31,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 4.0) internal successors, (1532), 383 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:29:31,716 INFO L276 IsEmpty]: Start isEmpty. Operand 3820 states and 4584 transitions. [2021-11-07 02:29:31,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1535 [2021-11-07 02:29:31,820 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:29:31,821 INFO L513 BasicCegarLoop]: trace histogram [383, 383, 382, 382, 1, 1, 1, 1] [2021-11-07 02:29:31,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:29:32,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2021-11-07 02:29:32,038 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 02:29:32,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:29:32,039 INFO L85 PathProgramCache]: Analyzing trace with hash -155708064, now seen corresponding path program 8 times [2021-11-07 02:29:32,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:29:32,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381866778] [2021-11-07 02:29:32,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:29:32,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:29:33,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:30:21,871 INFO L134 CoverageAnalysis]: Checked inductivity of 292230 backedges. 0 proven. 292230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:30:21,871 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:30:21,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381866778] [2021-11-07 02:30:21,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381866778] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 02:30:21,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609440274] [2021-11-07 02:30:21,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 02:30:21,872 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:30:21,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:30:21,872 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:30:21,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3aeff1-915b-4111-b58d-ea8a244475b0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 02:30:26,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 383 check-sat command(s) [2021-11-07 02:30:26,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:30:26,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 2693 conjuncts, 384 conjunts are in the unsatisfiable core [2021-11-07 02:30:26,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:30:30,618 INFO L134 CoverageAnalysis]: Checked inductivity of 292230 backedges. 0 proven. 292230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:30:30,618 INFO L328 TraceCheckSpWp]: Computing backward predicates...